./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:54:49,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:54:49,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:54:49,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:54:49,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:54:49,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:54:49,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:54:49,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:54:49,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:54:49,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:54:49,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:54:49,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:54:49,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:54:49,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:54:49,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:54:49,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:54:49,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:54:49,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:54:49,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:54:49,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:54:49,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:54:49,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:54:49,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:54:49,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:54:49,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:54:49,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:54:49,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:54:49,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:54:49,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:54:49,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:54:49,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:54:49,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:54:49,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:54:49,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:54:49,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:54:49,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:54:49,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:54:49,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:54:49,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:54:49,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:54:49,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:54:49,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:54:49,875 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:54:49,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:54:49,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:54:49,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:54:49,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:54:49,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:54:49,878 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:54:49,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:54:49,878 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:54:49,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:54:49,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:54:49,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:54:49,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:54:49,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:54:49,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:54:49,880 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:54:49,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:54:49,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:54:49,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:54:49,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:54:49,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:54:49,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:54:49,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:54:49,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:54:49,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:54:49,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:54:49,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:54:49,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:54:49,890 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:54:49,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:54:49,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:54:49,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:54:49,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2021-11-02 22:54:50,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:54:50,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:54:50,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:54:50,255 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:54:50,256 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:54:50,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-11-02 22:54:50,362 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/data/63236f7ac/1f2da310d4f84b3b9ed30be3b5ed3bbe/FLAG8f68f3636 [2021-11-02 22:54:50,961 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:54:50,962 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-11-02 22:54:50,976 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/data/63236f7ac/1f2da310d4f84b3b9ed30be3b5ed3bbe/FLAG8f68f3636 [2021-11-02 22:54:51,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/data/63236f7ac/1f2da310d4f84b3b9ed30be3b5ed3bbe [2021-11-02 22:54:51,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:54:51,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:54:51,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:54:51,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:54:51,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:54:51,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a20cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51, skipping insertion in model container [2021-11-02 22:54:51,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:54:51,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:54:51,617 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-11-02 22:54:51,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:54:51,634 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:54:51,659 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-11-02 22:54:51,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:54:51,680 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:54:51,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51 WrapperNode [2021-11-02 22:54:51,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:54:51,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:54:51,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:54:51,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:54:51,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:54:51,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:54:51,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:54:51,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:54:51,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:54:51,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:54:51,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:54:51,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:54:51,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51" (1/1) ... [2021-11-02 22:54:51,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:54:51,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:51,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:54:51,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc517869-79b8-4684-9a60-21796e4cc214/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:54:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-02 22:54:51,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-02 22:54:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-02 22:54:51,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-02 22:54:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:54:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:54:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:54:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:54:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:54:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:54:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:54:51,908 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-02 22:54:52,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:54:52,368 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-11-02 22:54:52,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:54:52 BoogieIcfgContainer [2021-11-02 22:54:52,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:54:52,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:54:52,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:54:52,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:54:52,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:54:51" (1/3) ... [2021-11-02 22:54:52,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b1a869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:54:52, skipping insertion in model container [2021-11-02 22:54:52,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:51" (2/3) ... [2021-11-02 22:54:52,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b1a869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:54:52, skipping insertion in model container [2021-11-02 22:54:52,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:54:52" (3/3) ... [2021-11-02 22:54:52,393 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2021-11-02 22:54:52,400 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-02 22:54:52,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:54:52,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:54:52,401 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-02 22:54:52,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,491 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,492 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,492 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,495 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,495 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,495 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,496 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,496 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,496 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,497 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,497 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,497 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,498 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,499 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,501 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,502 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,502 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,502 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,503 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,503 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,503 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,504 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,504 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,505 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,505 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,505 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,505 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,506 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,506 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,507 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,507 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,507 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,508 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,508 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,509 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,509 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,509 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,510 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,510 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,510 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,511 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,511 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,512 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,512 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,513 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,513 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,513 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,514 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,514 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,514 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,515 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,515 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,515 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,516 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,516 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,516 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,517 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,517 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,518 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,521 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,521 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,522 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,522 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,523 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,523 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,524 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,524 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,524 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,525 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,525 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,525 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,526 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,527 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,530 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,531 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,531 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,531 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,532 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,532 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,532 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,533 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,533 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,534 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,534 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,534 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,535 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,535 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,535 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,536 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,536 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,536 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,536 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,537 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,537 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,538 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,554 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,554 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,555 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,555 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,555 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,556 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,556 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,556 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,556 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,559 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,559 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,560 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,560 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,560 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,560 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,560 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,561 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,561 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,561 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,561 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,562 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,562 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,562 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,563 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,563 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,571 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,578 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,578 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,579 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,580 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,580 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,580 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,581 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,582 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,583 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,583 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,591 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,594 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,594 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,595 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,595 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,598 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,598 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:54:52,628 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-02 22:54:52,714 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:54:52,722 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:54:52,723 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-02 22:54:52,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 152 transitions, 320 flow [2021-11-02 22:54:52,881 INFO L129 PetriNetUnfolder]: 13/150 cut-off events. [2021-11-02 22:54:52,881 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-02 22:54:52,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 150 events. 13/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 253 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2021-11-02 22:54:52,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 152 transitions, 320 flow [2021-11-02 22:54:52,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 142 transitions, 296 flow [2021-11-02 22:54:53,004 INFO L129 PetriNetUnfolder]: 13/141 cut-off events. [2021-11-02 22:54:53,005 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-02 22:54:53,005 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:54:53,006 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:53,007 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:54:53,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1161888943, now seen corresponding path program 1 times [2021-11-02 22:54:53,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:53,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702210754] [2021-11-02 22:54:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:53,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:53,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:53,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702210754] [2021-11-02 22:54:53,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702210754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:53,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:53,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:54:53,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899461440] [2021-11-02 22:54:53,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:54:53,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:53,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:54:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:54:53,631 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2021-11-02 22:54:53,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 142 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 119.75) internal successors, (958), 8 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:53,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:54:53,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2021-11-02 22:54:53,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:54:54,120 INFO L129 PetriNetUnfolder]: 47/335 cut-off events. [2021-11-02 22:54:54,120 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-11-02 22:54:54,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 335 events. 47/335 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1481 event pairs, 9 based on Foata normal form. 24/334 useless extension candidates. Maximal degree in co-relation 344. Up to 38 conditions per place. [2021-11-02 22:54:54,128 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 46 selfloop transitions, 10 changer transitions 32/196 dead transitions. [2021-11-02 22:54:54,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 196 transitions, 589 flow [2021-11-02 22:54:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:54:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-02 22:54:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1867 transitions. [2021-11-02 22:54:54,157 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8188596491228071 [2021-11-02 22:54:54,158 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1867 transitions. [2021-11-02 22:54:54,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1867 transitions. [2021-11-02 22:54:54,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:54:54,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1867 transitions. [2021-11-02 22:54:54,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.46666666666667) internal successors, (1867), 15 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:54,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:54,202 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:54,204 INFO L186 Difference]: Start difference. First operand has 136 places, 142 transitions, 296 flow. Second operand 15 states and 1867 transitions. [2021-11-02 22:54:54,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 196 transitions, 589 flow [2021-11-02 22:54:54,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 196 transitions, 575 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-02 22:54:54,219 INFO L242 Difference]: Finished difference. Result has 156 places, 140 transitions, 347 flow [2021-11-02 22:54:54,221 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=347, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2021-11-02 22:54:54,223 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 20 predicate places. [2021-11-02 22:54:54,223 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 347 flow [2021-11-02 22:54:54,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.75) internal successors, (958), 8 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:54,224 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:54:54,225 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:54,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:54:54,226 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:54:54,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:54,227 INFO L85 PathProgramCache]: Analyzing trace with hash -643551031, now seen corresponding path program 1 times [2021-11-02 22:54:54,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:54,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518450342] [2021-11-02 22:54:54,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:54,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:54,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:54,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518450342] [2021-11-02 22:54:54,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518450342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:54,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:54,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:54:54,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753182766] [2021-11-02 22:54:54,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:54:54,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:54:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:54:54,398 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-02 22:54:54,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:54,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:54:54,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-02 22:54:54,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:54:54,590 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([361] L44-15-->L44-16: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite6_3|) InVars {thread1Thread1of1ForFork0_#t~ite6=|v_thread1Thread1of1ForFork0_#t~ite6_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite6=|v_thread1Thread1of1ForFork0_#t~ite6_3|} AuxVars[] AssignedVars[~result_4~0][49], [26#L44-16true, 33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-02 22:54:54,590 INFO L384 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2021-11-02 22:54:54,590 INFO L387 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2021-11-02 22:54:54,591 INFO L387 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2021-11-02 22:54:54,591 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-11-02 22:54:54,595 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([404] L50-16-->L50-17: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite10=|v_thread2Thread1of1ForFork1_#t~ite10_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite10][110], [26#L44-16true, 33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-02 22:54:54,596 INFO L384 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2021-11-02 22:54:54,596 INFO L387 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2021-11-02 22:54:54,597 INFO L387 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2021-11-02 22:54:54,597 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-11-02 22:54:54,601 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([404] L50-16-->L50-17: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite10=|v_thread2Thread1of1ForFork1_#t~ite10_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite10][110], [33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), 138#L44-17true, Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-02 22:54:54,601 INFO L384 tUnfolder$Statistics]: this new event has 69 ancestors and is cut-off event [2021-11-02 22:54:54,601 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-11-02 22:54:54,601 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-11-02 22:54:54,601 INFO L387 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2021-11-02 22:54:54,610 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([361] L44-15-->L44-16: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite6_3|) InVars {thread1Thread1of1ForFork0_#t~ite6=|v_thread1Thread1of1ForFork0_#t~ite6_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite6=|v_thread1Thread1of1ForFork0_#t~ite6_3|} AuxVars[] AssignedVars[~result_4~0][49], [26#L44-16true, 33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-02 22:54:54,610 INFO L384 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2021-11-02 22:54:54,610 INFO L387 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2021-11-02 22:54:54,611 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-11-02 22:54:54,611 INFO L387 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2021-11-02 22:54:54,611 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-11-02 22:54:54,612 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([404] L50-16-->L50-17: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite10=|v_thread2Thread1of1ForFork1_#t~ite10_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite10][110], [26#L44-16true, 33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-02 22:54:54,612 INFO L384 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2021-11-02 22:54:54,612 INFO L387 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2021-11-02 22:54:54,613 INFO L387 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2021-11-02 22:54:54,613 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-11-02 22:54:54,613 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-11-02 22:54:54,614 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([404] L50-16-->L50-17: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite10=|v_thread2Thread1of1ForFork1_#t~ite10_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite10][110], [33#L50-17true, 190#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256))), 149#true, 95#L65-4true, Black: 154#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 161#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), Black: 175#(and (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 165#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 153#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0)), Black: 173#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 0) (= ~result_4~0 0)), Black: 152#(= ~result_5~0 0), Black: 163#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0)), 138#L44-17true, Black: 167#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork1_#t~ite10| 0) (= ~result_4~0 0)), Black: 158#(and (= |thread1Thread1of1ForFork0_#t~ite6| 0) (= ~result_5~0 0) (= ~result_4~0 0))]) [2021-11-02 22:54:54,614 INFO L384 tUnfolder$Statistics]: this new event has 67 ancestors and is cut-off event [2021-11-02 22:54:54,614 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-11-02 22:54:54,614 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-11-02 22:54:54,614 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2021-11-02 22:54:54,615 INFO L387 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2021-11-02 22:54:54,644 INFO L129 PetriNetUnfolder]: 70/768 cut-off events. [2021-11-02 22:54:54,644 INFO L130 PetriNetUnfolder]: For 255/267 co-relation queries the response was YES. [2021-11-02 22:54:54,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 768 events. 70/768 cut-off events. For 255/267 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5613 event pairs, 9 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 1139. Up to 53 conditions per place. [2021-11-02 22:54:54,657 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 21 selfloop transitions, 12 changer transitions 1/158 dead transitions. [2021-11-02 22:54:54,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 158 transitions, 451 flow [2021-11-02 22:54:54,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:54:54,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-02 22:54:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2021-11-02 22:54:54,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9013157894736842 [2021-11-02 22:54:54,662 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2021-11-02 22:54:54,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2021-11-02 22:54:54,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:54:54,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2021-11-02 22:54:54,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:54,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:54,673 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:54,674 INFO L186 Difference]: Start difference. First operand has 156 places, 140 transitions, 347 flow. Second operand 4 states and 548 transitions. [2021-11-02 22:54:54,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 158 transitions, 451 flow [2021-11-02 22:54:54,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 158 transitions, 440 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-11-02 22:54:54,706 INFO L242 Difference]: Finished difference. Result has 147 places, 150 transitions, 424 flow [2021-11-02 22:54:54,707 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=424, PETRI_PLACES=147, PETRI_TRANSITIONS=150} [2021-11-02 22:54:54,707 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 11 predicate places. [2021-11-02 22:54:54,708 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 150 transitions, 424 flow [2021-11-02 22:54:54,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:54,709 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:54:54,709 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:54,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:54:54,709 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:54:54,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:54,714 INFO L85 PathProgramCache]: Analyzing trace with hash 256040129, now seen corresponding path program 2 times [2021-11-02 22:54:54,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:54,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741397326] [2021-11-02 22:54:54,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:54,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:54,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:54,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741397326] [2021-11-02 22:54:54,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741397326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:54,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:54,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:54:54,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868003440] [2021-11-02 22:54:54,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:54:54,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:54:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:54:54,972 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-02 22:54:54,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 150 transitions, 424 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:54,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:54:54,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-02 22:54:54,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:54:55,200 INFO L129 PetriNetUnfolder]: 59/727 cut-off events. [2021-11-02 22:54:55,201 INFO L130 PetriNetUnfolder]: For 216/290 co-relation queries the response was YES. [2021-11-02 22:54:55,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 727 events. 59/727 cut-off events. For 216/290 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5226 event pairs, 9 based on Foata normal form. 13/707 useless extension candidates. Maximal degree in co-relation 992. Up to 63 conditions per place. [2021-11-02 22:54:55,210 INFO L132 encePairwiseOnDemand]: 141/152 looper letters, 28 selfloop transitions, 8 changer transitions 2/162 dead transitions. [2021-11-02 22:54:55,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 162 transitions, 554 flow [2021-11-02 22:54:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:54:55,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-02 22:54:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2021-11-02 22:54:55,214 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8914473684210527 [2021-11-02 22:54:55,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2021-11-02 22:54:55,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2021-11-02 22:54:55,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:54:55,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2021-11-02 22:54:55,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:55,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:55,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:55,221 INFO L186 Difference]: Start difference. First operand has 147 places, 150 transitions, 424 flow. Second operand 4 states and 542 transitions. [2021-11-02 22:54:55,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 162 transitions, 554 flow [2021-11-02 22:54:55,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 162 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-02 22:54:55,235 INFO L242 Difference]: Finished difference. Result has 153 places, 155 transitions, 498 flow [2021-11-02 22:54:55,236 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=498, PETRI_PLACES=153, PETRI_TRANSITIONS=155} [2021-11-02 22:54:55,236 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 17 predicate places. [2021-11-02 22:54:55,236 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 155 transitions, 498 flow [2021-11-02 22:54:55,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:55,238 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:54:55,239 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:55,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:54:55,240 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:54:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash 667588757, now seen corresponding path program 1 times [2021-11-02 22:54:55,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:55,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332489850] [2021-11-02 22:54:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:55,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:55,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:55,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332489850] [2021-11-02 22:54:55,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332489850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:55,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:55,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:54:55,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81633789] [2021-11-02 22:54:55,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:54:55,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:55,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:54:55,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:54:55,473 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-02 22:54:55,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 155 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:55,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:54:55,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-02 22:54:55,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:54:55,733 INFO L129 PetriNetUnfolder]: 60/846 cut-off events. [2021-11-02 22:54:55,733 INFO L130 PetriNetUnfolder]: For 363/480 co-relation queries the response was YES. [2021-11-02 22:54:55,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 846 events. 60/846 cut-off events. For 363/480 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6060 event pairs, 7 based on Foata normal form. 18/831 useless extension candidates. Maximal degree in co-relation 1183. Up to 57 conditions per place. [2021-11-02 22:54:55,742 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 32 selfloop transitions, 11 changer transitions 2/169 dead transitions. [2021-11-02 22:54:55,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 169 transitions, 658 flow [2021-11-02 22:54:55,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:54:55,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-02 22:54:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2021-11-02 22:54:55,746 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8947368421052632 [2021-11-02 22:54:55,746 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2021-11-02 22:54:55,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2021-11-02 22:54:55,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:54:55,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2021-11-02 22:54:55,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:55,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:55,753 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:55,753 INFO L186 Difference]: Start difference. First operand has 153 places, 155 transitions, 498 flow. Second operand 4 states and 544 transitions. [2021-11-02 22:54:55,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 169 transitions, 658 flow [2021-11-02 22:54:55,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 169 transitions, 658 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-02 22:54:55,763 INFO L242 Difference]: Finished difference. Result has 158 places, 158 transitions, 560 flow [2021-11-02 22:54:55,764 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=560, PETRI_PLACES=158, PETRI_TRANSITIONS=158} [2021-11-02 22:54:55,765 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 22 predicate places. [2021-11-02 22:54:55,765 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 158 transitions, 560 flow [2021-11-02 22:54:55,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:55,766 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:54:55,766 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:55,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:54:55,767 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:54:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2031003169, now seen corresponding path program 2 times [2021-11-02 22:54:55,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:55,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909218919] [2021-11-02 22:54:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:55,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:55,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:55,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909218919] [2021-11-02 22:54:55,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909218919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:55,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:55,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:54:55,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936387252] [2021-11-02 22:54:55,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:54:55,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:54:55,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:54:55,854 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-02 22:54:55,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 158 transitions, 560 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:55,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:54:55,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-02 22:54:55,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:54:56,084 INFO L129 PetriNetUnfolder]: 58/863 cut-off events. [2021-11-02 22:54:56,085 INFO L130 PetriNetUnfolder]: For 491/600 co-relation queries the response was YES. [2021-11-02 22:54:56,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 863 events. 58/863 cut-off events. For 491/600 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6135 event pairs, 7 based on Foata normal form. 19/852 useless extension candidates. Maximal degree in co-relation 1244. Up to 59 conditions per place. [2021-11-02 22:54:56,096 INFO L132 encePairwiseOnDemand]: 141/152 looper letters, 33 selfloop transitions, 13 changer transitions 2/172 dead transitions. [2021-11-02 22:54:56,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 172 transitions, 746 flow [2021-11-02 22:54:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:54:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-02 22:54:56,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2021-11-02 22:54:56,100 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8914473684210527 [2021-11-02 22:54:56,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2021-11-02 22:54:56,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2021-11-02 22:54:56,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:54:56,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2021-11-02 22:54:56,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,107 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,107 INFO L186 Difference]: Start difference. First operand has 158 places, 158 transitions, 560 flow. Second operand 4 states and 542 transitions. [2021-11-02 22:54:56,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 172 transitions, 746 flow [2021-11-02 22:54:56,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 172 transitions, 740 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-02 22:54:56,120 INFO L242 Difference]: Finished difference. Result has 162 places, 164 transitions, 656 flow [2021-11-02 22:54:56,121 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=656, PETRI_PLACES=162, PETRI_TRANSITIONS=164} [2021-11-02 22:54:56,121 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 26 predicate places. [2021-11-02 22:54:56,121 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 164 transitions, 656 flow [2021-11-02 22:54:56,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,122 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:54:56,123 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:56,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:54:56,123 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:54:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1385567207, now seen corresponding path program 3 times [2021-11-02 22:54:56,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:56,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473161440] [2021-11-02 22:54:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:56,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:56,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:56,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473161440] [2021-11-02 22:54:56,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473161440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:56,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:56,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:54:56,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545711257] [2021-11-02 22:54:56,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:54:56,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:54:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:54:56,263 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-02 22:54:56,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 164 transitions, 656 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:54:56,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-02 22:54:56,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:54:56,478 INFO L129 PetriNetUnfolder]: 49/750 cut-off events. [2021-11-02 22:54:56,478 INFO L130 PetriNetUnfolder]: For 555/683 co-relation queries the response was YES. [2021-11-02 22:54:56,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 750 events. 49/750 cut-off events. For 555/683 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4978 event pairs, 7 based on Foata normal form. 18/742 useless extension candidates. Maximal degree in co-relation 1144. Up to 49 conditions per place. [2021-11-02 22:54:56,486 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 31 selfloop transitions, 16 changer transitions 4/173 dead transitions. [2021-11-02 22:54:56,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 173 transitions, 808 flow [2021-11-02 22:54:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:54:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-02 22:54:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2021-11-02 22:54:56,490 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8914473684210527 [2021-11-02 22:54:56,490 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2021-11-02 22:54:56,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2021-11-02 22:54:56,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:54:56,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2021-11-02 22:54:56,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,496 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,497 INFO L186 Difference]: Start difference. First operand has 162 places, 164 transitions, 656 flow. Second operand 4 states and 542 transitions. [2021-11-02 22:54:56,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 173 transitions, 808 flow [2021-11-02 22:54:56,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 173 transitions, 784 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-02 22:54:56,511 INFO L242 Difference]: Finished difference. Result has 164 places, 165 transitions, 713 flow [2021-11-02 22:54:56,512 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=713, PETRI_PLACES=164, PETRI_TRANSITIONS=165} [2021-11-02 22:54:56,512 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 28 predicate places. [2021-11-02 22:54:56,512 INFO L470 AbstractCegarLoop]: Abstraction has has 164 places, 165 transitions, 713 flow [2021-11-02 22:54:56,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,513 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:54:56,513 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:56,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:54:56,514 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:54:56,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:56,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1352966081, now seen corresponding path program 3 times [2021-11-02 22:54:56,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:56,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789004752] [2021-11-02 22:54:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:56,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:56,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:56,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789004752] [2021-11-02 22:54:56,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789004752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:56,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:56,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:54:56,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248784778] [2021-11-02 22:54:56,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:54:56,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:56,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:54:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:54:56,649 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2021-11-02 22:54:56,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 165 transitions, 713 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:54:56,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2021-11-02 22:54:56,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:54:56,895 INFO L129 PetriNetUnfolder]: 42/776 cut-off events. [2021-11-02 22:54:56,895 INFO L130 PetriNetUnfolder]: For 653/835 co-relation queries the response was YES. [2021-11-02 22:54:56,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 776 events. 42/776 cut-off events. For 653/835 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5166 event pairs, 9 based on Foata normal form. 25/778 useless extension candidates. Maximal degree in co-relation 1195. Up to 42 conditions per place. [2021-11-02 22:54:56,904 INFO L132 encePairwiseOnDemand]: 139/152 looper letters, 33 selfloop transitions, 21 changer transitions 2/178 dead transitions. [2021-11-02 22:54:56,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 178 transitions, 899 flow [2021-11-02 22:54:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:54:56,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-02 22:54:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 679 transitions. [2021-11-02 22:54:56,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8934210526315789 [2021-11-02 22:54:56,936 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 679 transitions. [2021-11-02 22:54:56,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 679 transitions. [2021-11-02 22:54:56,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:54:56,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 679 transitions. [2021-11-02 22:54:56,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,945 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,945 INFO L186 Difference]: Start difference. First operand has 164 places, 165 transitions, 713 flow. Second operand 5 states and 679 transitions. [2021-11-02 22:54:56,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 178 transitions, 899 flow [2021-11-02 22:54:56,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 178 transitions, 882 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-02 22:54:56,966 INFO L242 Difference]: Finished difference. Result has 168 places, 171 transitions, 828 flow [2021-11-02 22:54:56,966 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=828, PETRI_PLACES=168, PETRI_TRANSITIONS=171} [2021-11-02 22:54:56,967 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 32 predicate places. [2021-11-02 22:54:56,967 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 171 transitions, 828 flow [2021-11-02 22:54:56,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:56,968 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:54:56,968 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:56,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:54:56,969 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:54:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash -816977134, now seen corresponding path program 1 times [2021-11-02 22:54:56,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:56,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618393493] [2021-11-02 22:54:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:56,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:57,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:57,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618393493] [2021-11-02 22:54:57,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618393493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:57,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:57,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:54:57,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271129783] [2021-11-02 22:54:57,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:54:57,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:57,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:54:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:54:57,298 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:54:57,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 171 transitions, 828 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:57,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:54:57,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:54:57,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:54:58,346 INFO L129 PetriNetUnfolder]: 274/1387 cut-off events. [2021-11-02 22:54:58,347 INFO L130 PetriNetUnfolder]: For 1024/1075 co-relation queries the response was YES. [2021-11-02 22:54:58,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3005 conditions, 1387 events. 274/1387 cut-off events. For 1024/1075 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10308 event pairs, 158 based on Foata normal form. 1/1347 useless extension candidates. Maximal degree in co-relation 2715. Up to 546 conditions per place. [2021-11-02 22:54:58,364 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 90 selfloop transitions, 7 changer transitions 38/265 dead transitions. [2021-11-02 22:54:58,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 265 transitions, 1414 flow [2021-11-02 22:54:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:54:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-02 22:54:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3476 transitions. [2021-11-02 22:54:58,380 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7376910016977929 [2021-11-02 22:54:58,380 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3476 transitions. [2021-11-02 22:54:58,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3476 transitions. [2021-11-02 22:54:58,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:54:58,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3476 transitions. [2021-11-02 22:54:58,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 112.12903225806451) internal successors, (3476), 31 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:58,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:58,416 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:58,416 INFO L186 Difference]: Start difference. First operand has 168 places, 171 transitions, 828 flow. Second operand 31 states and 3476 transitions. [2021-11-02 22:54:58,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 265 transitions, 1414 flow [2021-11-02 22:54:58,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 265 transitions, 1400 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-11-02 22:54:58,438 INFO L242 Difference]: Finished difference. Result has 226 places, 177 transitions, 949 flow [2021-11-02 22:54:58,439 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=949, PETRI_PLACES=226, PETRI_TRANSITIONS=177} [2021-11-02 22:54:58,439 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 90 predicate places. [2021-11-02 22:54:58,439 INFO L470 AbstractCegarLoop]: Abstraction has has 226 places, 177 transitions, 949 flow [2021-11-02 22:54:58,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:58,441 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:54:58,441 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:58,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:54:58,442 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:54:58,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash -15218642, now seen corresponding path program 2 times [2021-11-02 22:54:58,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:58,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954298344] [2021-11-02 22:54:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:58,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:58,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:58,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954298344] [2021-11-02 22:54:58,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954298344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:58,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:58,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:54:58,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062025785] [2021-11-02 22:54:58,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:54:58,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:54:58,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:54:58,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:54:58,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 177 transitions, 949 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:58,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:54:58,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:54:58,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:54:59,633 INFO L129 PetriNetUnfolder]: 267/1425 cut-off events. [2021-11-02 22:54:59,634 INFO L130 PetriNetUnfolder]: For 5844/5895 co-relation queries the response was YES. [2021-11-02 22:54:59,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4912 conditions, 1425 events. 267/1425 cut-off events. For 5844/5895 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 10897 event pairs, 150 based on Foata normal form. 1/1387 useless extension candidates. Maximal degree in co-relation 4720. Up to 547 conditions per place. [2021-11-02 22:54:59,662 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 130 selfloop transitions, 5 changer transitions 38/303 dead transitions. [2021-11-02 22:54:59,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 303 transitions, 2265 flow [2021-11-02 22:54:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:54:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-02 22:54:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3370 transitions. [2021-11-02 22:54:59,677 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7390350877192983 [2021-11-02 22:54:59,678 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3370 transitions. [2021-11-02 22:54:59,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3370 transitions. [2021-11-02 22:54:59,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:54:59,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3370 transitions. [2021-11-02 22:54:59,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.33333333333333) internal successors, (3370), 30 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:59,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:59,712 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:59,712 INFO L186 Difference]: Start difference. First operand has 226 places, 177 transitions, 949 flow. Second operand 30 states and 3370 transitions. [2021-11-02 22:54:59,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 303 transitions, 2265 flow [2021-11-02 22:54:59,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 303 transitions, 2099 flow, removed 80 selfloop flow, removed 13 redundant places. [2021-11-02 22:54:59,829 INFO L242 Difference]: Finished difference. Result has 248 places, 181 transitions, 1057 flow [2021-11-02 22:54:59,829 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1057, PETRI_PLACES=248, PETRI_TRANSITIONS=181} [2021-11-02 22:54:59,830 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 112 predicate places. [2021-11-02 22:54:59,830 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 181 transitions, 1057 flow [2021-11-02 22:54:59,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:59,831 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:54:59,832 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:59,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:54:59,833 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:54:59,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash -749051736, now seen corresponding path program 3 times [2021-11-02 22:54:59,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:59,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845662224] [2021-11-02 22:54:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:59,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:00,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:00,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845662224] [2021-11-02 22:55:00,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845662224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:00,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:00,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:00,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220319018] [2021-11-02 22:55:00,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:00,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:00,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:00,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:00,089 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:00,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 181 transitions, 1057 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:00,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:00,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:00,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:01,110 INFO L129 PetriNetUnfolder]: 277/1417 cut-off events. [2021-11-02 22:55:01,110 INFO L130 PetriNetUnfolder]: For 9928/9979 co-relation queries the response was YES. [2021-11-02 22:55:01,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5756 conditions, 1417 events. 277/1417 cut-off events. For 9928/9979 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10657 event pairs, 164 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 5548. Up to 593 conditions per place. [2021-11-02 22:55:01,142 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 85 selfloop transitions, 16 changer transitions 31/262 dead transitions. [2021-11-02 22:55:01,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 262 transitions, 2382 flow [2021-11-02 22:55:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 22:55:01,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-02 22:55:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3133 transitions. [2021-11-02 22:55:01,157 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7361372180451128 [2021-11-02 22:55:01,158 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3133 transitions. [2021-11-02 22:55:01,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3133 transitions. [2021-11-02 22:55:01,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:01,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3133 transitions. [2021-11-02 22:55:01,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 111.89285714285714) internal successors, (3133), 28 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:01,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:01,198 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:01,209 INFO L186 Difference]: Start difference. First operand has 248 places, 181 transitions, 1057 flow. Second operand 28 states and 3133 transitions. [2021-11-02 22:55:01,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 262 transitions, 2382 flow [2021-11-02 22:55:01,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 262 transitions, 2236 flow, removed 71 selfloop flow, removed 13 redundant places. [2021-11-02 22:55:01,285 INFO L242 Difference]: Finished difference. Result has 256 places, 194 transitions, 1271 flow [2021-11-02 22:55:01,287 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1271, PETRI_PLACES=256, PETRI_TRANSITIONS=194} [2021-11-02 22:55:01,287 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 120 predicate places. [2021-11-02 22:55:01,287 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 194 transitions, 1271 flow [2021-11-02 22:55:01,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:01,289 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:01,289 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:01,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:55:01,290 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:01,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash 912650246, now seen corresponding path program 4 times [2021-11-02 22:55:01,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:01,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380942844] [2021-11-02 22:55:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:01,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:01,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:01,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380942844] [2021-11-02 22:55:01,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380942844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:01,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:01,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:01,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317099456] [2021-11-02 22:55:01,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:01,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:01,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:01,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:01,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:01,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 194 transitions, 1271 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:01,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:01,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:01,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:02,447 INFO L129 PetriNetUnfolder]: 297/1474 cut-off events. [2021-11-02 22:55:02,447 INFO L130 PetriNetUnfolder]: For 11221/11272 co-relation queries the response was YES. [2021-11-02 22:55:02,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6398 conditions, 1474 events. 297/1474 cut-off events. For 11221/11272 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11171 event pairs, 181 based on Foata normal form. 1/1429 useless extension candidates. Maximal degree in co-relation 6185. Up to 614 conditions per place. [2021-11-02 22:55:02,481 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 84 selfloop transitions, 25 changer transitions 31/270 dead transitions. [2021-11-02 22:55:02,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 270 transitions, 2676 flow [2021-11-02 22:55:02,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 22:55:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-11-02 22:55:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2808 transitions. [2021-11-02 22:55:02,492 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7389473684210527 [2021-11-02 22:55:02,493 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2808 transitions. [2021-11-02 22:55:02,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2808 transitions. [2021-11-02 22:55:02,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:02,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2808 transitions. [2021-11-02 22:55:02,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 112.32) internal successors, (2808), 25 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:02,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:02,520 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:02,520 INFO L186 Difference]: Start difference. First operand has 256 places, 194 transitions, 1271 flow. Second operand 25 states and 2808 transitions. [2021-11-02 22:55:02,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 270 transitions, 2676 flow [2021-11-02 22:55:02,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 270 transitions, 2424 flow, removed 126 selfloop flow, removed 11 redundant places. [2021-11-02 22:55:02,600 INFO L242 Difference]: Finished difference. Result has 273 places, 208 transitions, 1531 flow [2021-11-02 22:55:02,601 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1531, PETRI_PLACES=273, PETRI_TRANSITIONS=208} [2021-11-02 22:55:02,602 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 137 predicate places. [2021-11-02 22:55:02,602 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 208 transitions, 1531 flow [2021-11-02 22:55:02,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:02,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:02,603 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:02,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:55:02,604 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1638871922, now seen corresponding path program 5 times [2021-11-02 22:55:02,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:02,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553564450] [2021-11-02 22:55:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:02,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:02,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:02,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553564450] [2021-11-02 22:55:02,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553564450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:02,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:02,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:02,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284018992] [2021-11-02 22:55:02,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:02,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:02,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:02,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:02,800 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:02,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 208 transitions, 1531 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:02,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:02,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:02,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:03,785 INFO L129 PetriNetUnfolder]: 308/1520 cut-off events. [2021-11-02 22:55:03,785 INFO L130 PetriNetUnfolder]: For 14733/14787 co-relation queries the response was YES. [2021-11-02 22:55:03,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7164 conditions, 1520 events. 308/1520 cut-off events. For 14733/14787 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11613 event pairs, 165 based on Foata normal form. 1/1475 useless extension candidates. Maximal degree in co-relation 6939. Up to 606 conditions per place. [2021-11-02 22:55:03,822 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 97 selfloop transitions, 27 changer transitions 29/283 dead transitions. [2021-11-02 22:55:03,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 283 transitions, 3115 flow [2021-11-02 22:55:03,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:55:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-02 22:55:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2475 transitions. [2021-11-02 22:55:03,829 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7401315789473685 [2021-11-02 22:55:03,830 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2475 transitions. [2021-11-02 22:55:03,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2475 transitions. [2021-11-02 22:55:03,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:03,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2475 transitions. [2021-11-02 22:55:03,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.5) internal successors, (2475), 22 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:03,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:03,847 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:03,847 INFO L186 Difference]: Start difference. First operand has 273 places, 208 transitions, 1531 flow. Second operand 22 states and 2475 transitions. [2021-11-02 22:55:03,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 283 transitions, 3115 flow [2021-11-02 22:55:03,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 283 transitions, 2868 flow, removed 110 selfloop flow, removed 11 redundant places. [2021-11-02 22:55:03,969 INFO L242 Difference]: Finished difference. Result has 285 places, 221 transitions, 1759 flow [2021-11-02 22:55:03,970 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1759, PETRI_PLACES=285, PETRI_TRANSITIONS=221} [2021-11-02 22:55:03,970 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 149 predicate places. [2021-11-02 22:55:03,970 INFO L470 AbstractCegarLoop]: Abstraction has has 285 places, 221 transitions, 1759 flow [2021-11-02 22:55:03,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:03,971 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:03,972 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:03,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:55:03,972 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:03,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:03,973 INFO L85 PathProgramCache]: Analyzing trace with hash 895889222, now seen corresponding path program 6 times [2021-11-02 22:55:03,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:03,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958120001] [2021-11-02 22:55:03,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:03,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:04,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:04,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958120001] [2021-11-02 22:55:04,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958120001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:04,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:04,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:04,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862436698] [2021-11-02 22:55:04,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:04,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:04,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:04,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:04,168 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:04,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 221 transitions, 1759 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:04,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:04,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:04,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:05,217 INFO L129 PetriNetUnfolder]: 320/1550 cut-off events. [2021-11-02 22:55:05,218 INFO L130 PetriNetUnfolder]: For 16451/16526 co-relation queries the response was YES. [2021-11-02 22:55:05,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7503 conditions, 1550 events. 320/1550 cut-off events. For 16451/16526 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 11864 event pairs, 175 based on Foata normal form. 9/1513 useless extension candidates. Maximal degree in co-relation 7386. Up to 622 conditions per place. [2021-11-02 22:55:05,266 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 106 selfloop transitions, 39 changer transitions 24/299 dead transitions. [2021-11-02 22:55:05,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 299 transitions, 3273 flow [2021-11-02 22:55:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:55:05,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-02 22:55:05,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2145 transitions. [2021-11-02 22:55:05,272 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7427285318559557 [2021-11-02 22:55:05,273 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2145 transitions. [2021-11-02 22:55:05,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2145 transitions. [2021-11-02 22:55:05,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:05,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2145 transitions. [2021-11-02 22:55:05,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.89473684210526) internal successors, (2145), 19 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:05,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:05,289 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:05,289 INFO L186 Difference]: Start difference. First operand has 285 places, 221 transitions, 1759 flow. Second operand 19 states and 2145 transitions. [2021-11-02 22:55:05,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 299 transitions, 3273 flow [2021-11-02 22:55:05,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 299 transitions, 3019 flow, removed 97 selfloop flow, removed 13 redundant places. [2021-11-02 22:55:05,434 INFO L242 Difference]: Finished difference. Result has 291 places, 235 transitions, 1979 flow [2021-11-02 22:55:05,435 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1979, PETRI_PLACES=291, PETRI_TRANSITIONS=235} [2021-11-02 22:55:05,436 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 155 predicate places. [2021-11-02 22:55:05,436 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 235 transitions, 1979 flow [2021-11-02 22:55:05,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:05,437 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:05,437 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:05,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:55:05,438 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:05,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:05,438 INFO L85 PathProgramCache]: Analyzing trace with hash 968481708, now seen corresponding path program 7 times [2021-11-02 22:55:05,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:05,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261834892] [2021-11-02 22:55:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:05,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:05,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:05,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261834892] [2021-11-02 22:55:05,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261834892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:05,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:05,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:05,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011234577] [2021-11-02 22:55:05,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:05,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:05,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:05,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:05,692 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:05,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 235 transitions, 1979 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:05,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:05,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:05,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:06,760 INFO L129 PetriNetUnfolder]: 315/1592 cut-off events. [2021-11-02 22:55:06,761 INFO L130 PetriNetUnfolder]: For 16419/16476 co-relation queries the response was YES. [2021-11-02 22:55:06,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7627 conditions, 1592 events. 315/1592 cut-off events. For 16419/16476 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12435 event pairs, 169 based on Foata normal form. 1/1547 useless extension candidates. Maximal degree in co-relation 7451. Up to 609 conditions per place. [2021-11-02 22:55:06,808 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 118 selfloop transitions, 32 changer transitions 35/315 dead transitions. [2021-11-02 22:55:06,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 315 transitions, 3803 flow [2021-11-02 22:55:06,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:55:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-02 22:55:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2918 transitions. [2021-11-02 22:55:06,816 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7383603238866396 [2021-11-02 22:55:06,816 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2918 transitions. [2021-11-02 22:55:06,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2918 transitions. [2021-11-02 22:55:06,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:06,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2918 transitions. [2021-11-02 22:55:06,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.23076923076923) internal successors, (2918), 26 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:06,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:06,837 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:06,837 INFO L186 Difference]: Start difference. First operand has 291 places, 235 transitions, 1979 flow. Second operand 26 states and 2918 transitions. [2021-11-02 22:55:06,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 315 transitions, 3803 flow [2021-11-02 22:55:06,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 315 transitions, 3606 flow, removed 60 selfloop flow, removed 8 redundant places. [2021-11-02 22:55:07,007 INFO L242 Difference]: Finished difference. Result has 322 places, 246 transitions, 2178 flow [2021-11-02 22:55:07,008 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2178, PETRI_PLACES=322, PETRI_TRANSITIONS=246} [2021-11-02 22:55:07,009 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 186 predicate places. [2021-11-02 22:55:07,009 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 246 transitions, 2178 flow [2021-11-02 22:55:07,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:07,010 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:07,010 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:07,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:55:07,010 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1464833810, now seen corresponding path program 8 times [2021-11-02 22:55:07,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:07,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119818459] [2021-11-02 22:55:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:07,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:07,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:07,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119818459] [2021-11-02 22:55:07,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119818459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:07,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:07,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:07,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077744027] [2021-11-02 22:55:07,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:07,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:07,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:07,301 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:07,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 246 transitions, 2178 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:07,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:07,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:07,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:08,602 INFO L129 PetriNetUnfolder]: 325/1601 cut-off events. [2021-11-02 22:55:08,603 INFO L130 PetriNetUnfolder]: For 20250/20329 co-relation queries the response was YES. [2021-11-02 22:55:08,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8138 conditions, 1601 events. 325/1601 cut-off events. For 20250/20329 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12550 event pairs, 171 based on Foata normal form. 9/1563 useless extension candidates. Maximal degree in co-relation 7887. Up to 628 conditions per place. [2021-11-02 22:55:08,638 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 122 selfloop transitions, 44 changer transitions 39/335 dead transitions. [2021-11-02 22:55:08,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 335 transitions, 3893 flow [2021-11-02 22:55:08,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 22:55:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-02 22:55:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3137 transitions. [2021-11-02 22:55:08,647 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7370770676691729 [2021-11-02 22:55:08,647 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3137 transitions. [2021-11-02 22:55:08,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3137 transitions. [2021-11-02 22:55:08,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:08,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3137 transitions. [2021-11-02 22:55:08,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 112.03571428571429) internal successors, (3137), 28 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:08,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:08,670 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:08,670 INFO L186 Difference]: Start difference. First operand has 322 places, 246 transitions, 2178 flow. Second operand 28 states and 3137 transitions. [2021-11-02 22:55:08,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 335 transitions, 3893 flow [2021-11-02 22:55:08,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 335 transitions, 3626 flow, removed 123 selfloop flow, removed 17 redundant places. [2021-11-02 22:55:08,847 INFO L242 Difference]: Finished difference. Result has 335 places, 253 transitions, 2274 flow [2021-11-02 22:55:08,848 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2274, PETRI_PLACES=335, PETRI_TRANSITIONS=253} [2021-11-02 22:55:08,849 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 199 predicate places. [2021-11-02 22:55:08,849 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 253 transitions, 2274 flow [2021-11-02 22:55:08,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:08,850 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:08,850 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:08,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:55:08,851 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:08,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:08,851 INFO L85 PathProgramCache]: Analyzing trace with hash -234916372, now seen corresponding path program 9 times [2021-11-02 22:55:08,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:08,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773611859] [2021-11-02 22:55:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:08,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:09,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:09,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773611859] [2021-11-02 22:55:09,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773611859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:09,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:09,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:09,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477613088] [2021-11-02 22:55:09,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:09,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:09,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:09,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:09,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:09,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 253 transitions, 2274 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:09,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:09,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:09,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:10,244 INFO L129 PetriNetUnfolder]: 322/1623 cut-off events. [2021-11-02 22:55:10,244 INFO L130 PetriNetUnfolder]: For 18184/18265 co-relation queries the response was YES. [2021-11-02 22:55:10,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7964 conditions, 1623 events. 322/1623 cut-off events. For 18184/18265 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12766 event pairs, 196 based on Foata normal form. 4/1577 useless extension candidates. Maximal degree in co-relation 7795. Up to 626 conditions per place. [2021-11-02 22:55:10,301 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 121 selfloop transitions, 37 changer transitions 35/323 dead transitions. [2021-11-02 22:55:10,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 323 transitions, 3895 flow [2021-11-02 22:55:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 22:55:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-02 22:55:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3030 transitions. [2021-11-02 22:55:10,322 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7383040935672515 [2021-11-02 22:55:10,322 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3030 transitions. [2021-11-02 22:55:10,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3030 transitions. [2021-11-02 22:55:10,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:10,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3030 transitions. [2021-11-02 22:55:10,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 112.22222222222223) internal successors, (3030), 27 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:10,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:10,371 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:10,373 INFO L186 Difference]: Start difference. First operand has 335 places, 253 transitions, 2274 flow. Second operand 27 states and 3030 transitions. [2021-11-02 22:55:10,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 323 transitions, 3895 flow [2021-11-02 22:55:10,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 323 transitions, 3667 flow, removed 90 selfloop flow, removed 20 redundant places. [2021-11-02 22:55:10,554 INFO L242 Difference]: Finished difference. Result has 343 places, 258 transitions, 2454 flow [2021-11-02 22:55:10,555 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2454, PETRI_PLACES=343, PETRI_TRANSITIONS=258} [2021-11-02 22:55:10,555 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-02 22:55:10,555 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 258 transitions, 2454 flow [2021-11-02 22:55:10,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:10,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:10,557 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:10,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:55:10,557 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash -27740822, now seen corresponding path program 10 times [2021-11-02 22:55:10,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:10,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709135723] [2021-11-02 22:55:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:10,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:10,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:10,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709135723] [2021-11-02 22:55:10,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709135723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:10,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:10,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:10,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457575326] [2021-11-02 22:55:10,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:10,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:10,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:10,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:10,796 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:10,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 258 transitions, 2454 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:10,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:10,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:10,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:11,790 INFO L129 PetriNetUnfolder]: 310/1552 cut-off events. [2021-11-02 22:55:11,790 INFO L130 PetriNetUnfolder]: For 17641/17711 co-relation queries the response was YES. [2021-11-02 22:55:11,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7827 conditions, 1552 events. 310/1552 cut-off events. For 17641/17711 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12108 event pairs, 169 based on Foata normal form. 7/1516 useless extension candidates. Maximal degree in co-relation 7567. Up to 627 conditions per place. [2021-11-02 22:55:11,827 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 120 selfloop transitions, 45 changer transitions 34/329 dead transitions. [2021-11-02 22:55:11,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 329 transitions, 3928 flow [2021-11-02 22:55:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:55:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-02 22:55:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2695 transitions. [2021-11-02 22:55:11,834 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7387609649122807 [2021-11-02 22:55:11,835 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2695 transitions. [2021-11-02 22:55:11,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2695 transitions. [2021-11-02 22:55:11,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:11,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2695 transitions. [2021-11-02 22:55:11,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.29166666666667) internal successors, (2695), 24 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:11,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:11,854 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:11,855 INFO L186 Difference]: Start difference. First operand has 343 places, 258 transitions, 2454 flow. Second operand 24 states and 2695 transitions. [2021-11-02 22:55:11,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 329 transitions, 3928 flow [2021-11-02 22:55:12,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 329 transitions, 3658 flow, removed 94 selfloop flow, removed 20 redundant places. [2021-11-02 22:55:12,074 INFO L242 Difference]: Finished difference. Result has 341 places, 258 transitions, 2436 flow [2021-11-02 22:55:12,074 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2436, PETRI_PLACES=341, PETRI_TRANSITIONS=258} [2021-11-02 22:55:12,075 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 205 predicate places. [2021-11-02 22:55:12,075 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 258 transitions, 2436 flow [2021-11-02 22:55:12,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:12,076 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:12,076 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:12,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:55:12,077 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:12,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1053746396, now seen corresponding path program 11 times [2021-11-02 22:55:12,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:12,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991317908] [2021-11-02 22:55:12,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:12,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:12,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:12,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991317908] [2021-11-02 22:55:12,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991317908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:12,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:12,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:12,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470561068] [2021-11-02 22:55:12,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:12,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:12,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:12,256 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:12,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 258 transitions, 2436 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:12,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:12,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:12,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:13,156 INFO L129 PetriNetUnfolder]: 306/1539 cut-off events. [2021-11-02 22:55:13,157 INFO L130 PetriNetUnfolder]: For 16559/16643 co-relation queries the response was YES. [2021-11-02 22:55:13,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 1539 events. 306/1539 cut-off events. For 16559/16643 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 11911 event pairs, 169 based on Foata normal form. 9/1501 useless extension candidates. Maximal degree in co-relation 7315. Up to 625 conditions per place. [2021-11-02 22:55:13,188 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 111 selfloop transitions, 29 changer transitions 32/302 dead transitions. [2021-11-02 22:55:13,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 302 transitions, 3388 flow [2021-11-02 22:55:13,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:55:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:55:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2245 transitions. [2021-11-02 22:55:13,195 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7384868421052632 [2021-11-02 22:55:13,195 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2245 transitions. [2021-11-02 22:55:13,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2245 transitions. [2021-11-02 22:55:13,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:13,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2245 transitions. [2021-11-02 22:55:13,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.25) internal successors, (2245), 20 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:13,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:13,211 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:13,211 INFO L186 Difference]: Start difference. First operand has 341 places, 258 transitions, 2436 flow. Second operand 20 states and 2245 transitions. [2021-11-02 22:55:13,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 302 transitions, 3388 flow [2021-11-02 22:55:13,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 302 transitions, 3236 flow, removed 46 selfloop flow, removed 21 redundant places. [2021-11-02 22:55:13,382 INFO L242 Difference]: Finished difference. Result has 331 places, 237 transitions, 2080 flow [2021-11-02 22:55:13,383 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2080, PETRI_PLACES=331, PETRI_TRANSITIONS=237} [2021-11-02 22:55:13,383 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 195 predicate places. [2021-11-02 22:55:13,383 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 237 transitions, 2080 flow [2021-11-02 22:55:13,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:13,384 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:13,384 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:13,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 22:55:13,385 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:13,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1435626564, now seen corresponding path program 12 times [2021-11-02 22:55:13,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:13,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554139784] [2021-11-02 22:55:13,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:13,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:13,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:13,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554139784] [2021-11-02 22:55:13,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554139784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:13,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:13,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:13,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605401410] [2021-11-02 22:55:13,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:13,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:13,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:13,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:13,571 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:13,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 237 transitions, 2080 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:13,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:13,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:13,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:14,439 INFO L129 PetriNetUnfolder]: 304/1506 cut-off events. [2021-11-02 22:55:14,439 INFO L130 PetriNetUnfolder]: For 15214/15276 co-relation queries the response was YES. [2021-11-02 22:55:14,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7450 conditions, 1506 events. 304/1506 cut-off events. For 15214/15276 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 11547 event pairs, 181 based on Foata normal form. 3/1464 useless extension candidates. Maximal degree in co-relation 7340. Up to 624 conditions per place. [2021-11-02 22:55:14,468 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 97 selfloop transitions, 39 changer transitions 25/291 dead transitions. [2021-11-02 22:55:14,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 291 transitions, 3262 flow [2021-11-02 22:55:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:55:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-02 22:55:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2475 transitions. [2021-11-02 22:55:14,476 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7401315789473685 [2021-11-02 22:55:14,476 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2475 transitions. [2021-11-02 22:55:14,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2475 transitions. [2021-11-02 22:55:14,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:14,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2475 transitions. [2021-11-02 22:55:14,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.5) internal successors, (2475), 22 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:14,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:14,494 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:14,494 INFO L186 Difference]: Start difference. First operand has 331 places, 237 transitions, 2080 flow. Second operand 22 states and 2475 transitions. [2021-11-02 22:55:14,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 291 transitions, 3262 flow [2021-11-02 22:55:14,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 291 transitions, 2971 flow, removed 43 selfloop flow, removed 21 redundant places. [2021-11-02 22:55:14,683 INFO L242 Difference]: Finished difference. Result has 312 places, 249 transitions, 2227 flow [2021-11-02 22:55:14,684 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2227, PETRI_PLACES=312, PETRI_TRANSITIONS=249} [2021-11-02 22:55:14,686 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 176 predicate places. [2021-11-02 22:55:14,686 INFO L470 AbstractCegarLoop]: Abstraction has has 312 places, 249 transitions, 2227 flow [2021-11-02 22:55:14,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:14,687 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:14,687 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:14,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 22:55:14,688 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:14,688 INFO L85 PathProgramCache]: Analyzing trace with hash 64569744, now seen corresponding path program 13 times [2021-11-02 22:55:14,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:14,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360036255] [2021-11-02 22:55:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:14,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:14,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:14,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360036255] [2021-11-02 22:55:14,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360036255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:14,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:14,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:14,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985940550] [2021-11-02 22:55:14,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:14,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:14,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:14,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:14,928 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:14,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 249 transitions, 2227 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:14,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:14,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:14,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:15,935 INFO L129 PetriNetUnfolder]: 310/1540 cut-off events. [2021-11-02 22:55:15,935 INFO L130 PetriNetUnfolder]: For 14268/14330 co-relation queries the response was YES. [2021-11-02 22:55:15,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 1540 events. 310/1540 cut-off events. For 14268/14330 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11885 event pairs, 183 based on Foata normal form. 3/1498 useless extension candidates. Maximal degree in co-relation 7328. Up to 624 conditions per place. [2021-11-02 22:55:15,979 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 103 selfloop transitions, 47 changer transitions 25/305 dead transitions. [2021-11-02 22:55:15,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 305 transitions, 3441 flow [2021-11-02 22:55:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:55:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:55:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2258 transitions. [2021-11-02 22:55:15,986 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7427631578947368 [2021-11-02 22:55:15,986 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2258 transitions. [2021-11-02 22:55:15,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2258 transitions. [2021-11-02 22:55:15,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:15,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2258 transitions. [2021-11-02 22:55:15,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:16,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:16,002 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:16,002 INFO L186 Difference]: Start difference. First operand has 312 places, 249 transitions, 2227 flow. Second operand 20 states and 2258 transitions. [2021-11-02 22:55:16,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 305 transitions, 3441 flow [2021-11-02 22:55:16,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 305 transitions, 3330 flow, removed 43 selfloop flow, removed 5 redundant places. [2021-11-02 22:55:16,145 INFO L242 Difference]: Finished difference. Result has 328 places, 261 transitions, 2503 flow [2021-11-02 22:55:16,146 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2503, PETRI_PLACES=328, PETRI_TRANSITIONS=261} [2021-11-02 22:55:16,146 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 192 predicate places. [2021-11-02 22:55:16,146 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 261 transitions, 2503 flow [2021-11-02 22:55:16,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:16,147 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:16,148 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:16,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 22:55:16,148 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:16,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash 772646652, now seen corresponding path program 14 times [2021-11-02 22:55:16,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:16,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509356292] [2021-11-02 22:55:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:16,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:16,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:16,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509356292] [2021-11-02 22:55:16,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509356292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:16,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:16,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:16,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328367467] [2021-11-02 22:55:16,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:16,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:16,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:16,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:16,350 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:16,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 261 transitions, 2503 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:16,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:16,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:16,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:17,474 INFO L129 PetriNetUnfolder]: 306/1527 cut-off events. [2021-11-02 22:55:17,475 INFO L130 PetriNetUnfolder]: For 14893/14953 co-relation queries the response was YES. [2021-11-02 22:55:17,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7495 conditions, 1527 events. 306/1527 cut-off events. For 14893/14953 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11799 event pairs, 180 based on Foata normal form. 3/1485 useless extension candidates. Maximal degree in co-relation 7381. Up to 624 conditions per place. [2021-11-02 22:55:17,520 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 107 selfloop transitions, 46 changer transitions 27/310 dead transitions. [2021-11-02 22:55:17,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 310 transitions, 3694 flow [2021-11-02 22:55:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 22:55:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-02 22:55:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2368 transitions. [2021-11-02 22:55:17,527 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7418546365914787 [2021-11-02 22:55:17,528 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2368 transitions. [2021-11-02 22:55:17,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2368 transitions. [2021-11-02 22:55:17,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:17,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2368 transitions. [2021-11-02 22:55:17,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.76190476190476) internal successors, (2368), 21 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:17,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:17,544 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:17,544 INFO L186 Difference]: Start difference. First operand has 328 places, 261 transitions, 2503 flow. Second operand 21 states and 2368 transitions. [2021-11-02 22:55:17,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 310 transitions, 3694 flow [2021-11-02 22:55:17,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 310 transitions, 3565 flow, removed 36 selfloop flow, removed 8 redundant places. [2021-11-02 22:55:17,763 INFO L242 Difference]: Finished difference. Result has 343 places, 268 transitions, 2702 flow [2021-11-02 22:55:17,763 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2702, PETRI_PLACES=343, PETRI_TRANSITIONS=268} [2021-11-02 22:55:17,764 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-02 22:55:17,764 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 268 transitions, 2702 flow [2021-11-02 22:55:17,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:17,765 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:17,765 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:17,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 22:55:17,766 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:17,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:17,766 INFO L85 PathProgramCache]: Analyzing trace with hash -803067856, now seen corresponding path program 15 times [2021-11-02 22:55:17,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:17,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029127331] [2021-11-02 22:55:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:17,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:17,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:17,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029127331] [2021-11-02 22:55:17,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029127331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:17,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:17,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:17,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410867913] [2021-11-02 22:55:17,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:17,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:17,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:17,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:17,955 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:17,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 268 transitions, 2702 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:17,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:17,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:17,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:18,953 INFO L129 PetriNetUnfolder]: 308/1542 cut-off events. [2021-11-02 22:55:18,954 INFO L130 PetriNetUnfolder]: For 15501/15561 co-relation queries the response was YES. [2021-11-02 22:55:18,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7665 conditions, 1542 events. 308/1542 cut-off events. For 15501/15561 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11972 event pairs, 180 based on Foata normal form. 3/1500 useless extension candidates. Maximal degree in co-relation 7545. Up to 625 conditions per place. [2021-11-02 22:55:18,985 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 110 selfloop transitions, 50 changer transitions 33/323 dead transitions. [2021-11-02 22:55:18,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 323 transitions, 3969 flow [2021-11-02 22:55:18,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:55:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-02 22:55:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2699 transitions. [2021-11-02 22:55:18,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7398574561403509 [2021-11-02 22:55:18,995 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2699 transitions. [2021-11-02 22:55:18,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2699 transitions. [2021-11-02 22:55:18,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:18,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2699 transitions. [2021-11-02 22:55:19,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.45833333333333) internal successors, (2699), 24 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:19,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:19,011 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:19,012 INFO L186 Difference]: Start difference. First operand has 343 places, 268 transitions, 2702 flow. Second operand 24 states and 2699 transitions. [2021-11-02 22:55:19,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 323 transitions, 3969 flow [2021-11-02 22:55:19,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 323 transitions, 3828 flow, removed 39 selfloop flow, removed 7 redundant places. [2021-11-02 22:55:19,203 INFO L242 Difference]: Finished difference. Result has 364 places, 273 transitions, 2856 flow [2021-11-02 22:55:19,203 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2856, PETRI_PLACES=364, PETRI_TRANSITIONS=273} [2021-11-02 22:55:19,203 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 228 predicate places. [2021-11-02 22:55:19,204 INFO L470 AbstractCegarLoop]: Abstraction has has 364 places, 273 transitions, 2856 flow [2021-11-02 22:55:19,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:19,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:19,204 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:19,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 22:55:19,205 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:19,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2103982150, now seen corresponding path program 16 times [2021-11-02 22:55:19,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:19,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989378220] [2021-11-02 22:55:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:19,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:19,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:19,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989378220] [2021-11-02 22:55:19,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989378220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:19,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:19,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:19,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113539380] [2021-11-02 22:55:19,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:19,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:19,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:19,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:19,379 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:19,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 273 transitions, 2856 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:19,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:19,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:19,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:20,320 INFO L129 PetriNetUnfolder]: 311/1565 cut-off events. [2021-11-02 22:55:20,320 INFO L130 PetriNetUnfolder]: For 16923/16994 co-relation queries the response was YES. [2021-11-02 22:55:20,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7766 conditions, 1565 events. 311/1565 cut-off events. For 16923/16994 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 12138 event pairs, 195 based on Foata normal form. 3/1518 useless extension candidates. Maximal degree in co-relation 7637. Up to 624 conditions per place. [2021-11-02 22:55:20,344 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 114 selfloop transitions, 45 changer transitions 38/327 dead transitions. [2021-11-02 22:55:20,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 327 transitions, 4173 flow [2021-11-02 22:55:20,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 22:55:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-02 22:55:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2588 transitions. [2021-11-02 22:55:20,349 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7402745995423341 [2021-11-02 22:55:20,349 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2588 transitions. [2021-11-02 22:55:20,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2588 transitions. [2021-11-02 22:55:20,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:20,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2588 transitions. [2021-11-02 22:55:20,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 112.52173913043478) internal successors, (2588), 23 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:20,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:20,362 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:20,362 INFO L186 Difference]: Start difference. First operand has 364 places, 273 transitions, 2856 flow. Second operand 23 states and 2588 transitions. [2021-11-02 22:55:20,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 327 transitions, 4173 flow [2021-11-02 22:55:20,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 327 transitions, 3986 flow, removed 55 selfloop flow, removed 16 redundant places. [2021-11-02 22:55:20,571 INFO L242 Difference]: Finished difference. Result has 368 places, 272 transitions, 2857 flow [2021-11-02 22:55:20,572 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2857, PETRI_PLACES=368, PETRI_TRANSITIONS=272} [2021-11-02 22:55:20,573 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 232 predicate places. [2021-11-02 22:55:20,573 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 272 transitions, 2857 flow [2021-11-02 22:55:20,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:20,574 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:20,574 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:20,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 22:55:20,574 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1513369266, now seen corresponding path program 17 times [2021-11-02 22:55:20,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:20,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816868656] [2021-11-02 22:55:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:20,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:20,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:20,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816868656] [2021-11-02 22:55:20,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816868656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:20,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:20,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:20,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373951362] [2021-11-02 22:55:20,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:20,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:20,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:20,755 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:20,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 272 transitions, 2857 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:20,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:20,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:20,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:21,466 INFO L129 PetriNetUnfolder]: 295/1499 cut-off events. [2021-11-02 22:55:21,466 INFO L130 PetriNetUnfolder]: For 15499/15559 co-relation queries the response was YES. [2021-11-02 22:55:21,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7390 conditions, 1499 events. 295/1499 cut-off events. For 15499/15559 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 11607 event pairs, 179 based on Foata normal form. 3/1457 useless extension candidates. Maximal degree in co-relation 7261. Up to 622 conditions per place. [2021-11-02 22:55:21,505 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 103 selfloop transitions, 34 changer transitions 32/299 dead transitions. [2021-11-02 22:55:21,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 299 transitions, 3573 flow [2021-11-02 22:55:21,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:55:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:55:21,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2252 transitions. [2021-11-02 22:55:21,510 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7407894736842106 [2021-11-02 22:55:21,510 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2252 transitions. [2021-11-02 22:55:21,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2252 transitions. [2021-11-02 22:55:21,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:21,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2252 transitions. [2021-11-02 22:55:21,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.6) internal successors, (2252), 20 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:21,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:21,520 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:21,521 INFO L186 Difference]: Start difference. First operand has 368 places, 272 transitions, 2857 flow. Second operand 20 states and 2252 transitions. [2021-11-02 22:55:21,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 299 transitions, 3573 flow [2021-11-02 22:55:21,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 299 transitions, 3365 flow, removed 39 selfloop flow, removed 21 redundant places. [2021-11-02 22:55:21,699 INFO L242 Difference]: Finished difference. Result has 359 places, 254 transitions, 2448 flow [2021-11-02 22:55:21,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2448, PETRI_PLACES=359, PETRI_TRANSITIONS=254} [2021-11-02 22:55:21,700 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 223 predicate places. [2021-11-02 22:55:21,700 INFO L470 AbstractCegarLoop]: Abstraction has has 359 places, 254 transitions, 2448 flow [2021-11-02 22:55:21,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:21,700 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:21,700 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:21,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 22:55:21,701 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 334460434, now seen corresponding path program 18 times [2021-11-02 22:55:21,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:21,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748752885] [2021-11-02 22:55:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:21,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:21,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:21,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748752885] [2021-11-02 22:55:21,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748752885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:21,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:21,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:21,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83135812] [2021-11-02 22:55:21,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:21,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:21,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:21,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:21,879 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:21,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 254 transitions, 2448 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:21,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:21,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:21,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:22,593 INFO L129 PetriNetUnfolder]: 296/1534 cut-off events. [2021-11-02 22:55:22,593 INFO L130 PetriNetUnfolder]: For 15133/15204 co-relation queries the response was YES. [2021-11-02 22:55:22,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7203 conditions, 1534 events. 296/1534 cut-off events. For 15133/15204 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11922 event pairs, 195 based on Foata normal form. 3/1487 useless extension candidates. Maximal degree in co-relation 7082. Up to 623 conditions per place. [2021-11-02 22:55:22,620 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 97 selfloop transitions, 29 changer transitions 31/287 dead transitions. [2021-11-02 22:55:22,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 287 transitions, 3243 flow [2021-11-02 22:55:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:55:22,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-02 22:55:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2141 transitions. [2021-11-02 22:55:22,623 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7413434903047091 [2021-11-02 22:55:22,623 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2141 transitions. [2021-11-02 22:55:22,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2141 transitions. [2021-11-02 22:55:22,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:22,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2141 transitions. [2021-11-02 22:55:22,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.6842105263158) internal successors, (2141), 19 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:22,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:22,633 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:22,633 INFO L186 Difference]: Start difference. First operand has 359 places, 254 transitions, 2448 flow. Second operand 19 states and 2141 transitions. [2021-11-02 22:55:22,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 287 transitions, 3243 flow [2021-11-02 22:55:22,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 287 transitions, 3028 flow, removed 24 selfloop flow, removed 22 redundant places. [2021-11-02 22:55:22,815 INFO L242 Difference]: Finished difference. Result has 337 places, 243 transitions, 2165 flow [2021-11-02 22:55:22,815 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2278, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2165, PETRI_PLACES=337, PETRI_TRANSITIONS=243} [2021-11-02 22:55:22,815 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 201 predicate places. [2021-11-02 22:55:22,816 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 243 transitions, 2165 flow [2021-11-02 22:55:22,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:22,816 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:22,816 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:22,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 22:55:22,817 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:22,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:22,817 INFO L85 PathProgramCache]: Analyzing trace with hash -26173834, now seen corresponding path program 19 times [2021-11-02 22:55:22,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:22,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808485458] [2021-11-02 22:55:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:22,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:23,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:23,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808485458] [2021-11-02 22:55:23,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808485458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:23,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:23,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:23,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435863147] [2021-11-02 22:55:23,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:23,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:23,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:23,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:23,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:23,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 243 transitions, 2165 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:23,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:23,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:23,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:23,741 INFO L129 PetriNetUnfolder]: 287/1492 cut-off events. [2021-11-02 22:55:23,741 INFO L130 PetriNetUnfolder]: For 13975/14046 co-relation queries the response was YES. [2021-11-02 22:55:23,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6814 conditions, 1492 events. 287/1492 cut-off events. For 13975/14046 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11445 event pairs, 195 based on Foata normal form. 3/1445 useless extension candidates. Maximal degree in co-relation 6700. Up to 614 conditions per place. [2021-11-02 22:55:23,764 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 86 selfloop transitions, 15 changer transitions 33/264 dead transitions. [2021-11-02 22:55:23,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 264 transitions, 2706 flow [2021-11-02 22:55:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:55:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:55:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2238 transitions. [2021-11-02 22:55:23,768 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7361842105263158 [2021-11-02 22:55:23,768 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2238 transitions. [2021-11-02 22:55:23,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2238 transitions. [2021-11-02 22:55:23,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:23,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2238 transitions. [2021-11-02 22:55:23,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 111.9) internal successors, (2238), 20 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:23,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:23,779 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:23,779 INFO L186 Difference]: Start difference. First operand has 337 places, 243 transitions, 2165 flow. Second operand 20 states and 2238 transitions. [2021-11-02 22:55:23,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 264 transitions, 2706 flow [2021-11-02 22:55:23,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 264 transitions, 2550 flow, removed 23 selfloop flow, removed 23 redundant places. [2021-11-02 22:55:23,920 INFO L242 Difference]: Finished difference. Result has 320 places, 218 transitions, 1713 flow [2021-11-02 22:55:23,920 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1713, PETRI_PLACES=320, PETRI_TRANSITIONS=218} [2021-11-02 22:55:23,921 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 184 predicate places. [2021-11-02 22:55:23,921 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 218 transitions, 1713 flow [2021-11-02 22:55:23,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:23,921 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:23,921 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:23,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 22:55:23,922 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1558727268, now seen corresponding path program 20 times [2021-11-02 22:55:23,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:23,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797932794] [2021-11-02 22:55:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:23,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:24,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:24,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797932794] [2021-11-02 22:55:24,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797932794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:24,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:24,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:24,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220204238] [2021-11-02 22:55:24,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:24,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:24,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:24,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:24,083 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:24,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 218 transitions, 1713 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:24,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:24,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:24,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:25,123 INFO L129 PetriNetUnfolder]: 285/1482 cut-off events. [2021-11-02 22:55:25,123 INFO L130 PetriNetUnfolder]: For 13662/13716 co-relation queries the response was YES. [2021-11-02 22:55:25,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6764 conditions, 1482 events. 285/1482 cut-off events. For 13662/13716 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11340 event pairs, 172 based on Foata normal form. 1/1438 useless extension candidates. Maximal degree in co-relation 6658. Up to 599 conditions per place. [2021-11-02 22:55:25,154 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 85 selfloop transitions, 35 changer transitions 34/284 dead transitions. [2021-11-02 22:55:25,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 284 transitions, 3067 flow [2021-11-02 22:55:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 22:55:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-02 22:55:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3027 transitions. [2021-11-02 22:55:25,160 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7375730994152047 [2021-11-02 22:55:25,160 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3027 transitions. [2021-11-02 22:55:25,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3027 transitions. [2021-11-02 22:55:25,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:25,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3027 transitions. [2021-11-02 22:55:25,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 112.11111111111111) internal successors, (3027), 27 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:25,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:25,175 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:25,175 INFO L186 Difference]: Start difference. First operand has 320 places, 218 transitions, 1713 flow. Second operand 27 states and 3027 transitions. [2021-11-02 22:55:25,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 284 transitions, 3067 flow [2021-11-02 22:55:25,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 284 transitions, 2889 flow, removed 32 selfloop flow, removed 20 redundant places. [2021-11-02 22:55:25,300 INFO L242 Difference]: Finished difference. Result has 309 places, 226 transitions, 1887 flow [2021-11-02 22:55:25,300 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1887, PETRI_PLACES=309, PETRI_TRANSITIONS=226} [2021-11-02 22:55:25,300 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 173 predicate places. [2021-11-02 22:55:25,301 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 226 transitions, 1887 flow [2021-11-02 22:55:25,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:25,301 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:25,301 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:25,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 22:55:25,301 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:25,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:25,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2011217434, now seen corresponding path program 21 times [2021-11-02 22:55:25,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:25,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387593398] [2021-11-02 22:55:25,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:25,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:25,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:25,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387593398] [2021-11-02 22:55:25,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387593398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:25,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:25,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:25,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243663892] [2021-11-02 22:55:25,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:25,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:25,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:25,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:25,477 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:25,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 226 transitions, 1887 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:25,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:25,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:25,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:26,323 INFO L129 PetriNetUnfolder]: 281/1463 cut-off events. [2021-11-02 22:55:26,323 INFO L130 PetriNetUnfolder]: For 13455/13509 co-relation queries the response was YES. [2021-11-02 22:55:26,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 1463 events. 281/1463 cut-off events. For 13455/13509 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11147 event pairs, 169 based on Foata normal form. 1/1418 useless extension candidates. Maximal degree in co-relation 6673. Up to 597 conditions per place. [2021-11-02 22:55:26,346 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 88 selfloop transitions, 34 changer transitions 33/285 dead transitions. [2021-11-02 22:55:26,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 285 transitions, 3275 flow [2021-11-02 22:55:26,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:55:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-02 22:55:26,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2920 transitions. [2021-11-02 22:55:26,351 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7388663967611336 [2021-11-02 22:55:26,352 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2920 transitions. [2021-11-02 22:55:26,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2920 transitions. [2021-11-02 22:55:26,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:26,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2920 transitions. [2021-11-02 22:55:26,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.3076923076923) internal successors, (2920), 26 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:26,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:26,363 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:26,364 INFO L186 Difference]: Start difference. First operand has 309 places, 226 transitions, 1887 flow. Second operand 26 states and 2920 transitions. [2021-11-02 22:55:26,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 285 transitions, 3275 flow [2021-11-02 22:55:26,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 285 transitions, 3066 flow, removed 85 selfloop flow, removed 17 redundant places. [2021-11-02 22:55:26,488 INFO L242 Difference]: Finished difference. Result has 321 places, 233 transitions, 2085 flow [2021-11-02 22:55:26,488 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2085, PETRI_PLACES=321, PETRI_TRANSITIONS=233} [2021-11-02 22:55:26,488 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 185 predicate places. [2021-11-02 22:55:26,488 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 233 transitions, 2085 flow [2021-11-02 22:55:26,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:26,489 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:26,489 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:26,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 22:55:26,489 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:26,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1408346988, now seen corresponding path program 22 times [2021-11-02 22:55:26,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:26,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891714977] [2021-11-02 22:55:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:26,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:26,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:26,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891714977] [2021-11-02 22:55:26,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891714977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:26,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:26,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:26,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037368722] [2021-11-02 22:55:26,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:26,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:26,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:26,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:26,654 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:26,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 233 transitions, 2085 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:26,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:26,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:26,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:27,367 INFO L129 PetriNetUnfolder]: 274/1428 cut-off events. [2021-11-02 22:55:27,367 INFO L130 PetriNetUnfolder]: For 13538/13592 co-relation queries the response was YES. [2021-11-02 22:55:27,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 1428 events. 274/1428 cut-off events. For 13538/13592 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 10808 event pairs, 164 based on Foata normal form. 1/1385 useless extension candidates. Maximal degree in co-relation 6586. Up to 599 conditions per place. [2021-11-02 22:55:27,390 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 95 selfloop transitions, 39 changer transitions 26/290 dead transitions. [2021-11-02 22:55:27,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 290 transitions, 3333 flow [2021-11-02 22:55:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:55:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-02 22:55:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2470 transitions. [2021-11-02 22:55:27,399 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2021-11-02 22:55:27,399 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2470 transitions. [2021-11-02 22:55:27,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2470 transitions. [2021-11-02 22:55:27,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:27,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2470 transitions. [2021-11-02 22:55:27,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.27272727272727) internal successors, (2470), 22 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:27,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:27,408 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:27,409 INFO L186 Difference]: Start difference. First operand has 321 places, 233 transitions, 2085 flow. Second operand 22 states and 2470 transitions. [2021-11-02 22:55:27,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 290 transitions, 3333 flow [2021-11-02 22:55:27,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 290 transitions, 3092 flow, removed 90 selfloop flow, removed 18 redundant places. [2021-11-02 22:55:27,522 INFO L242 Difference]: Finished difference. Result has 319 places, 240 transitions, 2171 flow [2021-11-02 22:55:27,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2171, PETRI_PLACES=319, PETRI_TRANSITIONS=240} [2021-11-02 22:55:27,523 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 183 predicate places. [2021-11-02 22:55:27,523 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 240 transitions, 2171 flow [2021-11-02 22:55:27,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:27,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:27,524 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:27,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 22:55:27,525 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:27,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:27,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1079357320, now seen corresponding path program 23 times [2021-11-02 22:55:27,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:27,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332974697] [2021-11-02 22:55:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:27,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:27,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:27,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332974697] [2021-11-02 22:55:27,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332974697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:27,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:27,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:27,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114204226] [2021-11-02 22:55:27,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:27,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:27,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:27,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:27,677 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:27,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 240 transitions, 2171 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:27,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:27,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:27,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:28,414 INFO L129 PetriNetUnfolder]: 278/1461 cut-off events. [2021-11-02 22:55:28,414 INFO L130 PetriNetUnfolder]: For 12464/12518 co-relation queries the response was YES. [2021-11-02 22:55:28,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6733 conditions, 1461 events. 278/1461 cut-off events. For 12464/12518 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11114 event pairs, 168 based on Foata normal form. 1/1417 useless extension candidates. Maximal degree in co-relation 6622. Up to 601 conditions per place. [2021-11-02 22:55:28,438 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 90 selfloop transitions, 46 changer transitions 26/292 dead transitions. [2021-11-02 22:55:28,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 292 transitions, 3334 flow [2021-11-02 22:55:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 22:55:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-02 22:55:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2364 transitions. [2021-11-02 22:55:28,442 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7406015037593985 [2021-11-02 22:55:28,442 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2364 transitions. [2021-11-02 22:55:28,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2364 transitions. [2021-11-02 22:55:28,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:28,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2364 transitions. [2021-11-02 22:55:28,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.57142857142857) internal successors, (2364), 21 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:28,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:28,453 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:28,453 INFO L186 Difference]: Start difference. First operand has 319 places, 240 transitions, 2171 flow. Second operand 21 states and 2364 transitions. [2021-11-02 22:55:28,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 292 transitions, 3334 flow [2021-11-02 22:55:28,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 292 transitions, 3213 flow, removed 45 selfloop flow, removed 10 redundant places. [2021-11-02 22:55:28,611 INFO L242 Difference]: Finished difference. Result has 330 places, 250 transitions, 2407 flow [2021-11-02 22:55:28,612 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2407, PETRI_PLACES=330, PETRI_TRANSITIONS=250} [2021-11-02 22:55:28,612 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 194 predicate places. [2021-11-02 22:55:28,612 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 250 transitions, 2407 flow [2021-11-02 22:55:28,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:28,613 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:28,613 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:28,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 22:55:28,614 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:28,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2127205980, now seen corresponding path program 24 times [2021-11-02 22:55:28,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:28,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022198598] [2021-11-02 22:55:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:28,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:28,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:28,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022198598] [2021-11-02 22:55:28,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022198598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:28,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:28,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:28,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936420170] [2021-11-02 22:55:28,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:28,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:28,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:28,796 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:28,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 250 transitions, 2407 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:28,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:28,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:28,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:29,638 INFO L129 PetriNetUnfolder]: 274/1452 cut-off events. [2021-11-02 22:55:29,638 INFO L130 PetriNetUnfolder]: For 12434/12488 co-relation queries the response was YES. [2021-11-02 22:55:29,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 1452 events. 274/1452 cut-off events. For 12434/12488 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11075 event pairs, 166 based on Foata normal form. 1/1408 useless extension candidates. Maximal degree in co-relation 6627. Up to 599 conditions per place. [2021-11-02 22:55:29,658 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 98 selfloop transitions, 41 changer transitions 27/296 dead transitions. [2021-11-02 22:55:29,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 296 transitions, 3551 flow [2021-11-02 22:55:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:55:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-02 22:55:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2475 transitions. [2021-11-02 22:55:29,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7401315789473685 [2021-11-02 22:55:29,661 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2475 transitions. [2021-11-02 22:55:29,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2475 transitions. [2021-11-02 22:55:29,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:29,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2475 transitions. [2021-11-02 22:55:29,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.5) internal successors, (2475), 22 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:29,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:29,668 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:29,669 INFO L186 Difference]: Start difference. First operand has 330 places, 250 transitions, 2407 flow. Second operand 22 states and 2475 transitions. [2021-11-02 22:55:29,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 296 transitions, 3551 flow [2021-11-02 22:55:29,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 296 transitions, 3406 flow, removed 43 selfloop flow, removed 9 redundant places. [2021-11-02 22:55:29,778 INFO L242 Difference]: Finished difference. Result has 343 places, 254 transitions, 2524 flow [2021-11-02 22:55:29,779 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2302, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2524, PETRI_PLACES=343, PETRI_TRANSITIONS=254} [2021-11-02 22:55:29,779 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-02 22:55:29,779 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 254 transitions, 2524 flow [2021-11-02 22:55:29,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:29,780 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:29,780 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:29,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 22:55:29,780 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:29,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:29,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1439936064, now seen corresponding path program 25 times [2021-11-02 22:55:29,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:29,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813498602] [2021-11-02 22:55:29,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:29,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:29,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:29,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813498602] [2021-11-02 22:55:29,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813498602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:29,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:29,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:29,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374767582] [2021-11-02 22:55:29,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:29,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:29,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:29,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:29,946 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:29,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 254 transitions, 2524 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:29,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:29,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:29,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:30,697 INFO L129 PetriNetUnfolder]: 280/1476 cut-off events. [2021-11-02 22:55:30,698 INFO L130 PetriNetUnfolder]: For 13300/13354 co-relation queries the response was YES. [2021-11-02 22:55:30,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6980 conditions, 1476 events. 280/1476 cut-off events. For 13300/13354 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11317 event pairs, 164 based on Foata normal form. 1/1431 useless extension candidates. Maximal degree in co-relation 6860. Up to 601 conditions per place. [2021-11-02 22:55:30,721 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 91 selfloop transitions, 56 changer transitions 25/302 dead transitions. [2021-11-02 22:55:30,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 302 transitions, 3751 flow [2021-11-02 22:55:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:55:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:55:30,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2257 transitions. [2021-11-02 22:55:30,724 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7424342105263158 [2021-11-02 22:55:30,725 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2257 transitions. [2021-11-02 22:55:30,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2257 transitions. [2021-11-02 22:55:30,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:30,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2257 transitions. [2021-11-02 22:55:30,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.85) internal successors, (2257), 20 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:30,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:30,733 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:30,734 INFO L186 Difference]: Start difference. First operand has 343 places, 254 transitions, 2524 flow. Second operand 20 states and 2257 transitions. [2021-11-02 22:55:30,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 302 transitions, 3751 flow [2021-11-02 22:55:30,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 302 transitions, 3583 flow, removed 58 selfloop flow, removed 8 redundant places. [2021-11-02 22:55:30,865 INFO L242 Difference]: Finished difference. Result has 356 places, 266 transitions, 2845 flow [2021-11-02 22:55:30,866 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2845, PETRI_PLACES=356, PETRI_TRANSITIONS=266} [2021-11-02 22:55:30,866 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 220 predicate places. [2021-11-02 22:55:30,866 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 266 transitions, 2845 flow [2021-11-02 22:55:30,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:30,867 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:30,867 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:30,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 22:55:30,867 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:30,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:30,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1842571272, now seen corresponding path program 26 times [2021-11-02 22:55:30,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:30,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110954621] [2021-11-02 22:55:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:30,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:31,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:31,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110954621] [2021-11-02 22:55:31,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110954621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:31,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:31,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:31,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884455094] [2021-11-02 22:55:31,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:31,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:31,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:31,033 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:31,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 266 transitions, 2845 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:31,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:31,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:31,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:31,847 INFO L129 PetriNetUnfolder]: 284/1489 cut-off events. [2021-11-02 22:55:31,847 INFO L130 PetriNetUnfolder]: For 14196/14250 co-relation queries the response was YES. [2021-11-02 22:55:31,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7255 conditions, 1489 events. 284/1489 cut-off events. For 14196/14250 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11447 event pairs, 161 based on Foata normal form. 1/1444 useless extension candidates. Maximal degree in co-relation 7128. Up to 603 conditions per place. [2021-11-02 22:55:31,873 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 111 selfloop transitions, 46 changer transitions 25/312 dead transitions. [2021-11-02 22:55:31,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 312 transitions, 4147 flow [2021-11-02 22:55:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:55:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-02 22:55:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2478 transitions. [2021-11-02 22:55:31,876 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7410287081339713 [2021-11-02 22:55:31,876 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2478 transitions. [2021-11-02 22:55:31,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2478 transitions. [2021-11-02 22:55:31,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:31,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2478 transitions. [2021-11-02 22:55:31,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.63636363636364) internal successors, (2478), 22 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:31,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:31,882 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:31,883 INFO L186 Difference]: Start difference. First operand has 356 places, 266 transitions, 2845 flow. Second operand 22 states and 2478 transitions. [2021-11-02 22:55:31,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 312 transitions, 4147 flow [2021-11-02 22:55:32,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 312 transitions, 3909 flow, removed 71 selfloop flow, removed 9 redundant places. [2021-11-02 22:55:32,054 INFO L242 Difference]: Finished difference. Result has 369 places, 278 transitions, 3085 flow [2021-11-02 22:55:32,055 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3085, PETRI_PLACES=369, PETRI_TRANSITIONS=278} [2021-11-02 22:55:32,056 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 233 predicate places. [2021-11-02 22:55:32,056 INFO L470 AbstractCegarLoop]: Abstraction has has 369 places, 278 transitions, 3085 flow [2021-11-02 22:55:32,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:32,056 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:32,057 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:32,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 22:55:32,057 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:32,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash -570479608, now seen corresponding path program 27 times [2021-11-02 22:55:32,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:32,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063499196] [2021-11-02 22:55:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:32,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:32,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:32,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063499196] [2021-11-02 22:55:32,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063499196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:32,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:32,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:32,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140754962] [2021-11-02 22:55:32,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:32,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:32,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:32,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:32,228 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:32,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 278 transitions, 3085 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:32,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:32,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:32,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:32,998 INFO L129 PetriNetUnfolder]: 280/1483 cut-off events. [2021-11-02 22:55:32,998 INFO L130 PetriNetUnfolder]: For 14237/14291 co-relation queries the response was YES. [2021-11-02 22:55:33,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7207 conditions, 1483 events. 280/1483 cut-off events. For 14237/14291 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11367 event pairs, 161 based on Foata normal form. 1/1438 useless extension candidates. Maximal degree in co-relation 7076. Up to 601 conditions per place. [2021-11-02 22:55:33,028 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 114 selfloop transitions, 48 changer transitions 27/319 dead transitions. [2021-11-02 22:55:33,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 319 transitions, 4328 flow [2021-11-02 22:55:33,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 22:55:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-02 22:55:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2371 transitions. [2021-11-02 22:55:33,038 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7427944862155389 [2021-11-02 22:55:33,039 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2371 transitions. [2021-11-02 22:55:33,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2371 transitions. [2021-11-02 22:55:33,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:33,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2371 transitions. [2021-11-02 22:55:33,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.9047619047619) internal successors, (2371), 21 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:33,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:33,048 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:33,048 INFO L186 Difference]: Start difference. First operand has 369 places, 278 transitions, 3085 flow. Second operand 21 states and 2371 transitions. [2021-11-02 22:55:33,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 319 transitions, 4328 flow [2021-11-02 22:55:33,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 319 transitions, 4049 flow, removed 120 selfloop flow, removed 6 redundant places. [2021-11-02 22:55:33,270 INFO L242 Difference]: Finished difference. Result has 384 places, 285 transitions, 3212 flow [2021-11-02 22:55:33,271 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3212, PETRI_PLACES=384, PETRI_TRANSITIONS=285} [2021-11-02 22:55:33,271 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 248 predicate places. [2021-11-02 22:55:33,271 INFO L470 AbstractCegarLoop]: Abstraction has has 384 places, 285 transitions, 3212 flow [2021-11-02 22:55:33,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:33,271 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:33,272 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:33,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 22:55:33,272 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:33,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:33,272 INFO L85 PathProgramCache]: Analyzing trace with hash 400796910, now seen corresponding path program 28 times [2021-11-02 22:55:33,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:33,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981774407] [2021-11-02 22:55:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:33,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:33,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:33,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981774407] [2021-11-02 22:55:33,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981774407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:33,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:33,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:33,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81321159] [2021-11-02 22:55:33,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:33,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:33,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:33,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:33,430 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:33,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 285 transitions, 3212 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:33,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:33,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:33,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:34,366 INFO L129 PetriNetUnfolder]: 270/1461 cut-off events. [2021-11-02 22:55:34,366 INFO L130 PetriNetUnfolder]: For 13444/13498 co-relation queries the response was YES. [2021-11-02 22:55:34,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6957 conditions, 1461 events. 270/1461 cut-off events. For 13444/13498 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11238 event pairs, 160 based on Foata normal form. 1/1418 useless extension candidates. Maximal degree in co-relation 6818. Up to 598 conditions per place. [2021-11-02 22:55:34,393 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 115 selfloop transitions, 36 changer transitions 34/315 dead transitions. [2021-11-02 22:55:34,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 315 transitions, 4042 flow [2021-11-02 22:55:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 22:55:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-02 22:55:34,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2029 transitions. [2021-11-02 22:55:34,398 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.741593567251462 [2021-11-02 22:55:34,398 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2029 transitions. [2021-11-02 22:55:34,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2029 transitions. [2021-11-02 22:55:34,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:34,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2029 transitions. [2021-11-02 22:55:34,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.72222222222223) internal successors, (2029), 18 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:34,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:34,409 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:34,409 INFO L186 Difference]: Start difference. First operand has 384 places, 285 transitions, 3212 flow. Second operand 18 states and 2029 transitions. [2021-11-02 22:55:34,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 315 transitions, 4042 flow [2021-11-02 22:55:34,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 315 transitions, 3860 flow, removed 49 selfloop flow, removed 12 redundant places. [2021-11-02 22:55:34,599 INFO L242 Difference]: Finished difference. Result has 384 places, 265 transitions, 2757 flow [2021-11-02 22:55:34,599 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3036, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2757, PETRI_PLACES=384, PETRI_TRANSITIONS=265} [2021-11-02 22:55:34,600 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 248 predicate places. [2021-11-02 22:55:34,600 INFO L470 AbstractCegarLoop]: Abstraction has has 384 places, 265 transitions, 2757 flow [2021-11-02 22:55:34,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:34,600 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:34,600 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:34,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 22:55:34,601 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:34,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:34,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1364501168, now seen corresponding path program 29 times [2021-11-02 22:55:34,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:34,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086137415] [2021-11-02 22:55:34,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:34,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:34,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:34,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086137415] [2021-11-02 22:55:34,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086137415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:34,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:34,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:34,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057327906] [2021-11-02 22:55:34,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:34,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:34,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:34,766 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:34,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 265 transitions, 2757 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:34,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:34,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:34,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:35,583 INFO L129 PetriNetUnfolder]: 265/1446 cut-off events. [2021-11-02 22:55:35,583 INFO L130 PetriNetUnfolder]: For 12584/12638 co-relation queries the response was YES. [2021-11-02 22:55:35,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6736 conditions, 1446 events. 265/1446 cut-off events. For 12584/12638 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11097 event pairs, 162 based on Foata normal form. 1/1402 useless extension candidates. Maximal degree in co-relation 6602. Up to 596 conditions per place. [2021-11-02 22:55:35,627 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 107 selfloop transitions, 27 changer transitions 32/296 dead transitions. [2021-11-02 22:55:35,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 296 transitions, 3593 flow [2021-11-02 22:55:35,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:55:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-02 22:55:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2141 transitions. [2021-11-02 22:55:35,631 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7413434903047091 [2021-11-02 22:55:35,631 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2141 transitions. [2021-11-02 22:55:35,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2141 transitions. [2021-11-02 22:55:35,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:35,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2141 transitions. [2021-11-02 22:55:35,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.6842105263158) internal successors, (2141), 19 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:35,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:35,639 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:35,640 INFO L186 Difference]: Start difference. First operand has 384 places, 265 transitions, 2757 flow. Second operand 19 states and 2141 transitions. [2021-11-02 22:55:35,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 296 transitions, 3593 flow [2021-11-02 22:55:35,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 296 transitions, 3306 flow, removed 35 selfloop flow, removed 23 redundant places. [2021-11-02 22:55:35,785 INFO L242 Difference]: Finished difference. Result has 362 places, 254 transitions, 2407 flow [2021-11-02 22:55:35,785 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2407, PETRI_PLACES=362, PETRI_TRANSITIONS=254} [2021-11-02 22:55:35,786 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 226 predicate places. [2021-11-02 22:55:35,786 INFO L470 AbstractCegarLoop]: Abstraction has has 362 places, 254 transitions, 2407 flow [2021-11-02 22:55:35,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:35,787 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:35,787 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:35,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 22:55:35,787 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:35,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2056501944, now seen corresponding path program 30 times [2021-11-02 22:55:35,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:35,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322287661] [2021-11-02 22:55:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:35,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:35,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:35,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322287661] [2021-11-02 22:55:35,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322287661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:35,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:35,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:35,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675343583] [2021-11-02 22:55:35,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:35,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:35,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:35,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:35,949 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:35,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 254 transitions, 2407 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:35,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:35,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:35,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:36,664 INFO L129 PetriNetUnfolder]: 256/1380 cut-off events. [2021-11-02 22:55:36,664 INFO L130 PetriNetUnfolder]: For 10872/10926 co-relation queries the response was YES. [2021-11-02 22:55:36,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6150 conditions, 1380 events. 256/1380 cut-off events. For 10872/10926 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10342 event pairs, 162 based on Foata normal form. 1/1336 useless extension candidates. Maximal degree in co-relation 6023. Up to 592 conditions per place. [2021-11-02 22:55:36,689 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 96 selfloop transitions, 15 changer transitions 33/274 dead transitions. [2021-11-02 22:55:36,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 274 transitions, 2981 flow [2021-11-02 22:55:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:55:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:55:36,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2241 transitions. [2021-11-02 22:55:36,691 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7371710526315789 [2021-11-02 22:55:36,691 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2241 transitions. [2021-11-02 22:55:36,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2241 transitions. [2021-11-02 22:55:36,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:36,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2241 transitions. [2021-11-02 22:55:36,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.05) internal successors, (2241), 20 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:36,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:36,696 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:36,696 INFO L186 Difference]: Start difference. First operand has 362 places, 254 transitions, 2407 flow. Second operand 20 states and 2241 transitions. [2021-11-02 22:55:36,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 274 transitions, 2981 flow [2021-11-02 22:55:36,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 274 transitions, 2830 flow, removed 21 selfloop flow, removed 23 redundant places. [2021-11-02 22:55:36,804 INFO L242 Difference]: Finished difference. Result has 345 places, 231 transitions, 1977 flow [2021-11-02 22:55:36,805 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1977, PETRI_PLACES=345, PETRI_TRANSITIONS=231} [2021-11-02 22:55:36,805 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 209 predicate places. [2021-11-02 22:55:36,806 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 231 transitions, 1977 flow [2021-11-02 22:55:36,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:36,806 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:36,806 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:36,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-02 22:55:36,807 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:36,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1033402056, now seen corresponding path program 31 times [2021-11-02 22:55:36,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:36,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029056127] [2021-11-02 22:55:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:36,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:36,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:36,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029056127] [2021-11-02 22:55:36,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029056127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:36,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:36,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:36,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540305990] [2021-11-02 22:55:36,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:36,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:36,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:36,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:36,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:36,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 231 transitions, 1977 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:36,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:36,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:36,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:37,709 INFO L129 PetriNetUnfolder]: 259/1406 cut-off events. [2021-11-02 22:55:37,709 INFO L130 PetriNetUnfolder]: For 10621/10675 co-relation queries the response was YES. [2021-11-02 22:55:37,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6153 conditions, 1406 events. 259/1406 cut-off events. For 10621/10675 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10678 event pairs, 161 based on Foata normal form. 1/1361 useless extension candidates. Maximal degree in co-relation 6035. Up to 592 conditions per place. [2021-11-02 22:55:37,734 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 78 selfloop transitions, 37 changer transitions 33/278 dead transitions. [2021-11-02 22:55:37,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 278 transitions, 3009 flow [2021-11-02 22:55:37,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:55:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-02 22:55:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2698 transitions. [2021-11-02 22:55:37,737 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2021-11-02 22:55:37,737 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2698 transitions. [2021-11-02 22:55:37,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2698 transitions. [2021-11-02 22:55:37,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:37,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2698 transitions. [2021-11-02 22:55:37,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.41666666666667) internal successors, (2698), 24 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:37,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:37,743 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:37,743 INFO L186 Difference]: Start difference. First operand has 345 places, 231 transitions, 1977 flow. Second operand 24 states and 2698 transitions. [2021-11-02 22:55:37,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 278 transitions, 3009 flow [2021-11-02 22:55:37,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 278 transitions, 2823 flow, removed 29 selfloop flow, removed 20 redundant places. [2021-11-02 22:55:37,828 INFO L242 Difference]: Finished difference. Result has 331 places, 236 transitions, 2086 flow [2021-11-02 22:55:37,828 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2086, PETRI_PLACES=331, PETRI_TRANSITIONS=236} [2021-11-02 22:55:37,828 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 195 predicate places. [2021-11-02 22:55:37,828 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 236 transitions, 2086 flow [2021-11-02 22:55:37,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:37,829 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:37,829 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:37,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 22:55:37,829 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:37,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:37,830 INFO L85 PathProgramCache]: Analyzing trace with hash 243979502, now seen corresponding path program 32 times [2021-11-02 22:55:37,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:37,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345735301] [2021-11-02 22:55:37,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:37,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:38,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:38,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345735301] [2021-11-02 22:55:38,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345735301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:38,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:38,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:38,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453861231] [2021-11-02 22:55:38,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:38,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:38,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:38,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:38,038 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:38,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 236 transitions, 2086 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:38,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:38,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:38,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:38,851 INFO L129 PetriNetUnfolder]: 256/1393 cut-off events. [2021-11-02 22:55:38,851 INFO L130 PetriNetUnfolder]: For 10112/10166 co-relation queries the response was YES. [2021-11-02 22:55:38,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5992 conditions, 1393 events. 256/1393 cut-off events. For 10112/10166 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10580 event pairs, 160 based on Foata normal form. 1/1348 useless extension candidates. Maximal degree in co-relation 5873. Up to 592 conditions per place. [2021-11-02 22:55:38,874 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 82 selfloop transitions, 32 changer transitions 38/282 dead transitions. [2021-11-02 22:55:38,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 282 transitions, 3113 flow [2021-11-02 22:55:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 22:55:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-02 22:55:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2587 transitions. [2021-11-02 22:55:38,877 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7399885583524027 [2021-11-02 22:55:38,877 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2587 transitions. [2021-11-02 22:55:38,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2587 transitions. [2021-11-02 22:55:38,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:38,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2587 transitions. [2021-11-02 22:55:38,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 112.47826086956522) internal successors, (2587), 23 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:38,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:38,886 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:38,887 INFO L186 Difference]: Start difference. First operand has 331 places, 236 transitions, 2086 flow. Second operand 23 states and 2587 transitions. [2021-11-02 22:55:38,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 282 transitions, 3113 flow [2021-11-02 22:55:38,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 282 transitions, 2993 flow, removed 42 selfloop flow, removed 14 redundant places. [2021-11-02 22:55:38,984 INFO L242 Difference]: Finished difference. Result has 337 places, 235 transitions, 2104 flow [2021-11-02 22:55:38,984 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2104, PETRI_PLACES=337, PETRI_TRANSITIONS=235} [2021-11-02 22:55:38,984 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 201 predicate places. [2021-11-02 22:55:38,985 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 235 transitions, 2104 flow [2021-11-02 22:55:38,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:38,985 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:38,985 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:38,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 22:55:38,985 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:38,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:38,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1359564634, now seen corresponding path program 33 times [2021-11-02 22:55:38,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:38,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176022164] [2021-11-02 22:55:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:38,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:39,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:39,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176022164] [2021-11-02 22:55:39,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176022164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:39,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:39,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:39,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619156498] [2021-11-02 22:55:39,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:39,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:39,132 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:39,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 235 transitions, 2104 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:39,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:39,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:39,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:39,798 INFO L129 PetriNetUnfolder]: 246/1349 cut-off events. [2021-11-02 22:55:39,799 INFO L130 PetriNetUnfolder]: For 9693/9747 co-relation queries the response was YES. [2021-11-02 22:55:39,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 1349 events. 246/1349 cut-off events. For 9693/9747 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10111 event pairs, 160 based on Foata normal form. 1/1304 useless extension candidates. Maximal degree in co-relation 5610. Up to 590 conditions per place. [2021-11-02 22:55:39,820 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 71 selfloop transitions, 21 changer transitions 32/254 dead transitions. [2021-11-02 22:55:39,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 254 transitions, 2606 flow [2021-11-02 22:55:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:55:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:55:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2251 transitions. [2021-11-02 22:55:39,823 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7404605263157895 [2021-11-02 22:55:39,823 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2251 transitions. [2021-11-02 22:55:39,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2251 transitions. [2021-11-02 22:55:39,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:39,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2251 transitions. [2021-11-02 22:55:39,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.55) internal successors, (2251), 20 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:39,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:39,827 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:39,828 INFO L186 Difference]: Start difference. First operand has 337 places, 235 transitions, 2104 flow. Second operand 20 states and 2251 transitions. [2021-11-02 22:55:39,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 254 transitions, 2606 flow [2021-11-02 22:55:39,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 254 transitions, 2435 flow, removed 33 selfloop flow, removed 21 redundant places. [2021-11-02 22:55:39,904 INFO L242 Difference]: Finished difference. Result has 328 places, 217 transitions, 1726 flow [2021-11-02 22:55:39,905 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1726, PETRI_PLACES=328, PETRI_TRANSITIONS=217} [2021-11-02 22:55:39,905 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 192 predicate places. [2021-11-02 22:55:39,905 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 217 transitions, 1726 flow [2021-11-02 22:55:39,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:39,905 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:39,905 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:39,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-02 22:55:39,906 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:39,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:39,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1059898950, now seen corresponding path program 34 times [2021-11-02 22:55:39,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:39,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039455326] [2021-11-02 22:55:39,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:39,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:40,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:40,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039455326] [2021-11-02 22:55:40,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039455326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:40,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:40,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:40,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16515604] [2021-11-02 22:55:40,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:40,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:40,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:40,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:40,079 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:40,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 217 transitions, 1726 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:40,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:40,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:40,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:40,712 INFO L129 PetriNetUnfolder]: 241/1330 cut-off events. [2021-11-02 22:55:40,712 INFO L130 PetriNetUnfolder]: For 9131/9185 co-relation queries the response was YES. [2021-11-02 22:55:40,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 1330 events. 241/1330 cut-off events. For 9131/9185 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10000 event pairs, 160 based on Foata normal form. 1/1285 useless extension candidates. Maximal degree in co-relation 5391. Up to 588 conditions per place. [2021-11-02 22:55:40,732 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 64 selfloop transitions, 17 changer transitions 30/241 dead transitions. [2021-11-02 22:55:40,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 241 transitions, 2290 flow [2021-11-02 22:55:40,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:55:40,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:55:40,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2249 transitions. [2021-11-02 22:55:40,734 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7398026315789473 [2021-11-02 22:55:40,734 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2249 transitions. [2021-11-02 22:55:40,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2249 transitions. [2021-11-02 22:55:40,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:40,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2249 transitions. [2021-11-02 22:55:40,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.45) internal successors, (2249), 20 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:40,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:40,739 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:40,739 INFO L186 Difference]: Start difference. First operand has 328 places, 217 transitions, 1726 flow. Second operand 20 states and 2249 transitions. [2021-11-02 22:55:40,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 241 transitions, 2290 flow [2021-11-02 22:55:40,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 241 transitions, 2116 flow, removed 21 selfloop flow, removed 22 redundant places. [2021-11-02 22:55:40,807 INFO L242 Difference]: Finished difference. Result has 308 places, 206 transitions, 1485 flow [2021-11-02 22:55:40,808 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1485, PETRI_PLACES=308, PETRI_TRANSITIONS=206} [2021-11-02 22:55:40,808 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 172 predicate places. [2021-11-02 22:55:40,808 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 206 transitions, 1485 flow [2021-11-02 22:55:40,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:40,808 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:40,808 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:40,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-02 22:55:40,809 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:40,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:40,809 INFO L85 PathProgramCache]: Analyzing trace with hash 683463240, now seen corresponding path program 35 times [2021-11-02 22:55:40,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:40,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464278699] [2021-11-02 22:55:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:40,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:40,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:40,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464278699] [2021-11-02 22:55:40,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464278699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:40,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:40,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:40,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643774083] [2021-11-02 22:55:40,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:40,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:40,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:40,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:40,978 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:40,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 206 transitions, 1485 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:40,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:40,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:40,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:41,590 INFO L129 PetriNetUnfolder]: 233/1285 cut-off events. [2021-11-02 22:55:41,590 INFO L130 PetriNetUnfolder]: For 8384/8438 co-relation queries the response was YES. [2021-11-02 22:55:41,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5140 conditions, 1285 events. 233/1285 cut-off events. For 8384/8438 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9506 event pairs, 160 based on Foata normal form. 1/1240 useless extension candidates. Maximal degree in co-relation 5035. Up to 571 conditions per place. [2021-11-02 22:55:41,609 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 54 selfloop transitions, 2 changer transitions 36/220 dead transitions. [2021-11-02 22:55:41,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 220 transitions, 1840 flow [2021-11-02 22:55:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:55:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-02 22:55:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2129 transitions. [2021-11-02 22:55:41,612 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7371883656509696 [2021-11-02 22:55:41,612 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2129 transitions. [2021-11-02 22:55:41,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2129 transitions. [2021-11-02 22:55:41,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:41,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2129 transitions. [2021-11-02 22:55:41,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.05263157894737) internal successors, (2129), 19 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:41,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:41,617 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:41,617 INFO L186 Difference]: Start difference. First operand has 308 places, 206 transitions, 1485 flow. Second operand 19 states and 2129 transitions. [2021-11-02 22:55:41,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 220 transitions, 1840 flow [2021-11-02 22:55:41,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 220 transitions, 1732 flow, removed 22 selfloop flow, removed 22 redundant places. [2021-11-02 22:55:41,673 INFO L242 Difference]: Finished difference. Result has 290 places, 179 transitions, 1072 flow [2021-11-02 22:55:41,673 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1072, PETRI_PLACES=290, PETRI_TRANSITIONS=179} [2021-11-02 22:55:41,673 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 154 predicate places. [2021-11-02 22:55:41,673 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 179 transitions, 1072 flow [2021-11-02 22:55:41,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:41,674 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:41,674 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:41,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-02 22:55:41,674 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:41,675 INFO L85 PathProgramCache]: Analyzing trace with hash 453423764, now seen corresponding path program 1 times [2021-11-02 22:55:41,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:41,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483096054] [2021-11-02 22:55:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:41,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:41,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:41,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483096054] [2021-11-02 22:55:41,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483096054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:41,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:41,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:41,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538845518] [2021-11-02 22:55:41,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:41,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:41,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:41,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:41,833 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:41,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 179 transitions, 1072 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:41,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:41,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:41,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:42,809 INFO L129 PetriNetUnfolder]: 262/1371 cut-off events. [2021-11-02 22:55:42,810 INFO L130 PetriNetUnfolder]: For 8577/8634 co-relation queries the response was YES. [2021-11-02 22:55:42,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5183 conditions, 1371 events. 262/1371 cut-off events. For 8577/8634 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10313 event pairs, 173 based on Foata normal form. 7/1326 useless extension candidates. Maximal degree in co-relation 5088. Up to 548 conditions per place. [2021-11-02 22:55:42,829 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 99 selfloop transitions, 7 changer transitions 42/277 dead transitions. [2021-11-02 22:55:42,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 277 transitions, 2151 flow [2021-11-02 22:55:42,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:55:42,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-02 22:55:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3480 transitions. [2021-11-02 22:55:42,833 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7385398981324278 [2021-11-02 22:55:42,833 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3480 transitions. [2021-11-02 22:55:42,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3480 transitions. [2021-11-02 22:55:42,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:42,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3480 transitions. [2021-11-02 22:55:42,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 112.25806451612904) internal successors, (3480), 31 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:42,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:42,841 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:42,841 INFO L186 Difference]: Start difference. First operand has 290 places, 179 transitions, 1072 flow. Second operand 31 states and 3480 transitions. [2021-11-02 22:55:42,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 277 transitions, 2151 flow [2021-11-02 22:55:42,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 277 transitions, 2065 flow, removed 28 selfloop flow, removed 27 redundant places. [2021-11-02 22:55:42,888 INFO L242 Difference]: Finished difference. Result has 284 places, 185 transitions, 1183 flow [2021-11-02 22:55:42,889 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1183, PETRI_PLACES=284, PETRI_TRANSITIONS=185} [2021-11-02 22:55:42,889 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 148 predicate places. [2021-11-02 22:55:42,889 INFO L470 AbstractCegarLoop]: Abstraction has has 284 places, 185 transitions, 1183 flow [2021-11-02 22:55:42,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:42,890 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:42,890 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:42,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-02 22:55:42,890 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1059598848, now seen corresponding path program 2 times [2021-11-02 22:55:42,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:42,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605436708] [2021-11-02 22:55:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:42,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:43,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:43,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605436708] [2021-11-02 22:55:43,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605436708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:43,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:43,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:43,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774315172] [2021-11-02 22:55:43,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:43,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:43,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:43,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:43,047 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:43,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 185 transitions, 1183 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:43,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:43,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:43,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:43,811 INFO L129 PetriNetUnfolder]: 260/1376 cut-off events. [2021-11-02 22:55:43,811 INFO L130 PetriNetUnfolder]: For 16180/16233 co-relation queries the response was YES. [2021-11-02 22:55:43,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6427 conditions, 1376 events. 260/1376 cut-off events. For 16180/16233 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10320 event pairs, 180 based on Foata normal form. 7/1329 useless extension candidates. Maximal degree in co-relation 6326. Up to 556 conditions per place. [2021-11-02 22:55:43,833 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 99 selfloop transitions, 5 changer transitions 42/275 dead transitions. [2021-11-02 22:55:43,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 275 transitions, 2664 flow [2021-11-02 22:55:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:55:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-02 22:55:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3364 transitions. [2021-11-02 22:55:43,836 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.737719298245614 [2021-11-02 22:55:43,836 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3364 transitions. [2021-11-02 22:55:43,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3364 transitions. [2021-11-02 22:55:43,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:43,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3364 transitions. [2021-11-02 22:55:43,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.13333333333334) internal successors, (3364), 30 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:43,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:43,848 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:43,848 INFO L186 Difference]: Start difference. First operand has 284 places, 185 transitions, 1183 flow. Second operand 30 states and 3364 transitions. [2021-11-02 22:55:43,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 275 transitions, 2664 flow [2021-11-02 22:55:43,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 275 transitions, 2206 flow, removed 226 selfloop flow, removed 15 redundant places. [2021-11-02 22:55:43,943 INFO L242 Difference]: Finished difference. Result has 304 places, 189 transitions, 1267 flow [2021-11-02 22:55:43,943 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1267, PETRI_PLACES=304, PETRI_TRANSITIONS=189} [2021-11-02 22:55:43,943 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 168 predicate places. [2021-11-02 22:55:43,943 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 189 transitions, 1267 flow [2021-11-02 22:55:43,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:43,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:43,944 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:43,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-02 22:55:43,944 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:43,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:43,945 INFO L85 PathProgramCache]: Analyzing trace with hash 668467130, now seen corresponding path program 3 times [2021-11-02 22:55:43,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:43,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978852334] [2021-11-02 22:55:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:43,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:44,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:44,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978852334] [2021-11-02 22:55:44,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978852334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:44,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:44,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:44,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536752127] [2021-11-02 22:55:44,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:44,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:44,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:44,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:44,111 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:44,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 189 transitions, 1267 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:44,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:44,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:44,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:45,183 INFO L129 PetriNetUnfolder]: 269/1428 cut-off events. [2021-11-02 22:55:45,184 INFO L130 PetriNetUnfolder]: For 16863/16919 co-relation queries the response was YES. [2021-11-02 22:55:45,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6759 conditions, 1428 events. 269/1428 cut-off events. For 16863/16919 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10839 event pairs, 177 based on Foata normal form. 9/1387 useless extension candidates. Maximal degree in co-relation 6644. Up to 573 conditions per place. [2021-11-02 22:55:45,214 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 82 selfloop transitions, 16 changer transitions 35/262 dead transitions. [2021-11-02 22:55:45,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 262 transitions, 2617 flow [2021-11-02 22:55:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 22:55:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-02 22:55:45,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3137 transitions. [2021-11-02 22:55:45,219 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7370770676691729 [2021-11-02 22:55:45,219 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3137 transitions. [2021-11-02 22:55:45,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3137 transitions. [2021-11-02 22:55:45,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:45,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3137 transitions. [2021-11-02 22:55:45,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 112.03571428571429) internal successors, (3137), 28 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:45,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:45,230 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:45,230 INFO L186 Difference]: Start difference. First operand has 304 places, 189 transitions, 1267 flow. Second operand 28 states and 3137 transitions. [2021-11-02 22:55:45,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 262 transitions, 2617 flow [2021-11-02 22:55:45,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 262 transitions, 2145 flow, removed 234 selfloop flow, removed 20 redundant places. [2021-11-02 22:55:45,369 INFO L242 Difference]: Finished difference. Result has 305 places, 202 transitions, 1437 flow [2021-11-02 22:55:45,370 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1437, PETRI_PLACES=305, PETRI_TRANSITIONS=202} [2021-11-02 22:55:45,370 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 169 predicate places. [2021-11-02 22:55:45,370 INFO L470 AbstractCegarLoop]: Abstraction has has 305 places, 202 transitions, 1437 flow [2021-11-02 22:55:45,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:45,371 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:45,371 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:45,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-02 22:55:45,372 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:45,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash -628820430, now seen corresponding path program 4 times [2021-11-02 22:55:45,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:45,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974516375] [2021-11-02 22:55:45,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:45,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:45,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:45,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974516375] [2021-11-02 22:55:45,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974516375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:45,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:45,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:45,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477364015] [2021-11-02 22:55:45,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:45,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:45,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:45,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:45,545 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:45,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 202 transitions, 1437 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:45,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:45,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:45,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:46,344 INFO L129 PetriNetUnfolder]: 285/1464 cut-off events. [2021-11-02 22:55:46,345 INFO L130 PetriNetUnfolder]: For 13534/13599 co-relation queries the response was YES. [2021-11-02 22:55:46,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6706 conditions, 1464 events. 285/1464 cut-off events. For 13534/13599 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11160 event pairs, 183 based on Foata normal form. 8/1422 useless extension candidates. Maximal degree in co-relation 6593. Up to 580 conditions per place. [2021-11-02 22:55:46,370 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 86 selfloop transitions, 22 changer transitions 35/272 dead transitions. [2021-11-02 22:55:46,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 272 transitions, 2717 flow [2021-11-02 22:55:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 22:55:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-02 22:55:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3031 transitions. [2021-11-02 22:55:46,373 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7385477582846004 [2021-11-02 22:55:46,373 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3031 transitions. [2021-11-02 22:55:46,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3031 transitions. [2021-11-02 22:55:46,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:46,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3031 transitions. [2021-11-02 22:55:46,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 112.25925925925925) internal successors, (3031), 27 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:46,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:46,379 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:46,380 INFO L186 Difference]: Start difference. First operand has 305 places, 202 transitions, 1437 flow. Second operand 27 states and 3031 transitions. [2021-11-02 22:55:46,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 272 transitions, 2717 flow [2021-11-02 22:55:46,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 272 transitions, 2325 flow, removed 196 selfloop flow, removed 15 redundant places. [2021-11-02 22:55:46,465 INFO L242 Difference]: Finished difference. Result has 319 places, 214 transitions, 1588 flow [2021-11-02 22:55:46,465 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1588, PETRI_PLACES=319, PETRI_TRANSITIONS=214} [2021-11-02 22:55:46,466 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 183 predicate places. [2021-11-02 22:55:46,466 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 214 transitions, 1588 flow [2021-11-02 22:55:46,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:46,467 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:46,467 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:46,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-02 22:55:46,467 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1943161292, now seen corresponding path program 5 times [2021-11-02 22:55:46,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:46,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52884601] [2021-11-02 22:55:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:46,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:46,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:46,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52884601] [2021-11-02 22:55:46,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52884601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:46,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:46,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:46,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821572204] [2021-11-02 22:55:46,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:46,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:46,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:46,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:46,624 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:46,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 214 transitions, 1588 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:46,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:46,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:46,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:47,363 INFO L129 PetriNetUnfolder]: 285/1468 cut-off events. [2021-11-02 22:55:47,363 INFO L130 PetriNetUnfolder]: For 13420/13487 co-relation queries the response was YES. [2021-11-02 22:55:47,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 1468 events. 285/1468 cut-off events. For 13420/13487 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11218 event pairs, 182 based on Foata normal form. 13/1431 useless extension candidates. Maximal degree in co-relation 6668. Up to 586 conditions per place. [2021-11-02 22:55:47,389 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 88 selfloop transitions, 24 changer transitions 38/279 dead transitions. [2021-11-02 22:55:47,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 279 transitions, 2852 flow [2021-11-02 22:55:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:55:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-02 22:55:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2479 transitions. [2021-11-02 22:55:47,394 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7413277511961722 [2021-11-02 22:55:47,395 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2479 transitions. [2021-11-02 22:55:47,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2479 transitions. [2021-11-02 22:55:47,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:47,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2479 transitions. [2021-11-02 22:55:47,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.68181818181819) internal successors, (2479), 22 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:47,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:47,404 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:47,405 INFO L186 Difference]: Start difference. First operand has 319 places, 214 transitions, 1588 flow. Second operand 22 states and 2479 transitions. [2021-11-02 22:55:47,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 279 transitions, 2852 flow [2021-11-02 22:55:47,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 279 transitions, 2602 flow, removed 122 selfloop flow, removed 14 redundant places. [2021-11-02 22:55:47,505 INFO L242 Difference]: Finished difference. Result has 324 places, 221 transitions, 1730 flow [2021-11-02 22:55:47,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1730, PETRI_PLACES=324, PETRI_TRANSITIONS=221} [2021-11-02 22:55:47,506 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 188 predicate places. [2021-11-02 22:55:47,506 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 221 transitions, 1730 flow [2021-11-02 22:55:47,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:47,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:47,507 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:47,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-02 22:55:47,507 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:47,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:47,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1535643112, now seen corresponding path program 6 times [2021-11-02 22:55:47,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:47,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678419109] [2021-11-02 22:55:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:47,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:47,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:47,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678419109] [2021-11-02 22:55:47,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678419109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:47,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:47,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:47,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629185303] [2021-11-02 22:55:47,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:47,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:47,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:47,681 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:47,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 221 transitions, 1730 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:47,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:47,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:47,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:48,583 INFO L129 PetriNetUnfolder]: 304/1535 cut-off events. [2021-11-02 22:55:48,583 INFO L130 PetriNetUnfolder]: For 14328/14384 co-relation queries the response was YES. [2021-11-02 22:55:48,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 1535 events. 304/1535 cut-off events. For 14328/14384 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11792 event pairs, 199 based on Foata normal form. 8/1492 useless extension candidates. Maximal degree in co-relation 7114. Up to 586 conditions per place. [2021-11-02 22:55:48,609 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 99 selfloop transitions, 28 changer transitions 35/291 dead transitions. [2021-11-02 22:55:48,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 291 transitions, 3094 flow [2021-11-02 22:55:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:55:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-02 22:55:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2924 transitions. [2021-11-02 22:55:48,612 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7398785425101214 [2021-11-02 22:55:48,612 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2924 transitions. [2021-11-02 22:55:48,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2924 transitions. [2021-11-02 22:55:48,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:48,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2924 transitions. [2021-11-02 22:55:48,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.46153846153847) internal successors, (2924), 26 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:48,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:48,622 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:48,623 INFO L186 Difference]: Start difference. First operand has 324 places, 221 transitions, 1730 flow. Second operand 26 states and 2924 transitions. [2021-11-02 22:55:48,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 291 transitions, 3094 flow [2021-11-02 22:55:48,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 291 transitions, 2831 flow, removed 108 selfloop flow, removed 15 redundant places. [2021-11-02 22:55:48,765 INFO L242 Difference]: Finished difference. Result has 343 places, 235 transitions, 1985 flow [2021-11-02 22:55:48,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1985, PETRI_PLACES=343, PETRI_TRANSITIONS=235} [2021-11-02 22:55:48,766 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-02 22:55:48,767 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 235 transitions, 1985 flow [2021-11-02 22:55:48,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:48,767 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:48,768 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:48,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-02 22:55:48,768 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:48,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:48,769 INFO L85 PathProgramCache]: Analyzing trace with hash 720035066, now seen corresponding path program 7 times [2021-11-02 22:55:48,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:48,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394771258] [2021-11-02 22:55:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:48,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:48,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:48,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394771258] [2021-11-02 22:55:48,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394771258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:48,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:48,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:48,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617593631] [2021-11-02 22:55:48,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:48,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:48,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:48,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:48,953 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:48,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 235 transitions, 1985 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:48,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:48,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:48,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:49,843 INFO L129 PetriNetUnfolder]: 300/1554 cut-off events. [2021-11-02 22:55:49,843 INFO L130 PetriNetUnfolder]: For 15795/15853 co-relation queries the response was YES. [2021-11-02 22:55:49,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7474 conditions, 1554 events. 300/1554 cut-off events. For 15795/15853 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12065 event pairs, 209 based on Foata normal form. 8/1510 useless extension candidates. Maximal degree in co-relation 7343. Up to 612 conditions per place. [2021-11-02 22:55:49,872 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 98 selfloop transitions, 36 changer transitions 35/298 dead transitions. [2021-11-02 22:55:49,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 298 transitions, 3471 flow [2021-11-02 22:55:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 22:55:49,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-11-02 22:55:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2810 transitions. [2021-11-02 22:55:49,875 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7394736842105263 [2021-11-02 22:55:49,876 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2810 transitions. [2021-11-02 22:55:49,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2810 transitions. [2021-11-02 22:55:49,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:49,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2810 transitions. [2021-11-02 22:55:49,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 112.4) internal successors, (2810), 25 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:49,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:49,884 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:49,884 INFO L186 Difference]: Start difference. First operand has 343 places, 235 transitions, 1985 flow. Second operand 25 states and 2810 transitions. [2021-11-02 22:55:49,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 298 transitions, 3471 flow [2021-11-02 22:55:49,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 298 transitions, 3158 flow, removed 151 selfloop flow, removed 14 redundant places. [2021-11-02 22:55:50,001 INFO L242 Difference]: Finished difference. Result has 359 places, 246 transitions, 2235 flow [2021-11-02 22:55:50,001 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2235, PETRI_PLACES=359, PETRI_TRANSITIONS=246} [2021-11-02 22:55:50,002 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 223 predicate places. [2021-11-02 22:55:50,002 INFO L470 AbstractCegarLoop]: Abstraction has has 359 places, 246 transitions, 2235 flow [2021-11-02 22:55:50,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:50,003 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:50,003 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:50,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-02 22:55:50,003 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:50,003 INFO L85 PathProgramCache]: Analyzing trace with hash -272986300, now seen corresponding path program 8 times [2021-11-02 22:55:50,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:50,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549832092] [2021-11-02 22:55:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:50,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:50,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:50,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549832092] [2021-11-02 22:55:50,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549832092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:50,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:50,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:50,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167715313] [2021-11-02 22:55:50,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:50,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:50,178 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:50,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 246 transitions, 2235 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:50,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:50,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:50,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:50,981 INFO L129 PetriNetUnfolder]: 304/1549 cut-off events. [2021-11-02 22:55:50,981 INFO L130 PetriNetUnfolder]: For 17147/17216 co-relation queries the response was YES. [2021-11-02 22:55:51,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7689 conditions, 1549 events. 304/1549 cut-off events. For 17147/17216 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12013 event pairs, 192 based on Foata normal form. 8/1506 useless extension candidates. Maximal degree in co-relation 7549. Up to 591 conditions per place. [2021-11-02 22:55:51,009 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 117 selfloop transitions, 36 changer transitions 46/328 dead transitions. [2021-11-02 22:55:51,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 328 transitions, 3915 flow [2021-11-02 22:55:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:55:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-02 22:55:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2922 transitions. [2021-11-02 22:55:51,012 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7393724696356275 [2021-11-02 22:55:51,012 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2922 transitions. [2021-11-02 22:55:51,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2922 transitions. [2021-11-02 22:55:51,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:51,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2922 transitions. [2021-11-02 22:55:51,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.38461538461539) internal successors, (2922), 26 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:51,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:51,022 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:51,022 INFO L186 Difference]: Start difference. First operand has 359 places, 246 transitions, 2235 flow. Second operand 26 states and 2922 transitions. [2021-11-02 22:55:51,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 328 transitions, 3915 flow [2021-11-02 22:55:51,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 328 transitions, 3656 flow, removed 112 selfloop flow, removed 13 redundant places. [2021-11-02 22:55:51,213 INFO L242 Difference]: Finished difference. Result has 377 places, 255 transitions, 2408 flow [2021-11-02 22:55:51,213 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2408, PETRI_PLACES=377, PETRI_TRANSITIONS=255} [2021-11-02 22:55:51,214 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 241 predicate places. [2021-11-02 22:55:51,214 INFO L470 AbstractCegarLoop]: Abstraction has has 377 places, 255 transitions, 2408 flow [2021-11-02 22:55:51,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:51,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:51,214 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:51,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-02 22:55:51,215 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:51,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:51,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1079870868, now seen corresponding path program 9 times [2021-11-02 22:55:51,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:51,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917430083] [2021-11-02 22:55:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:51,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:51,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:51,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917430083] [2021-11-02 22:55:51,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917430083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:51,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:51,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:51,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041142933] [2021-11-02 22:55:51,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:51,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:51,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:51,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:51,377 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:51,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 255 transitions, 2408 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:51,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:51,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:51,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:52,295 INFO L129 PetriNetUnfolder]: 295/1529 cut-off events. [2021-11-02 22:55:52,296 INFO L130 PetriNetUnfolder]: For 16340/16409 co-relation queries the response was YES. [2021-11-02 22:55:52,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7481 conditions, 1529 events. 295/1529 cut-off events. For 16340/16409 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 11855 event pairs, 186 based on Foata normal form. 16/1495 useless extension candidates. Maximal degree in co-relation 7332. Up to 588 conditions per place. [2021-11-02 22:55:52,325 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 109 selfloop transitions, 45 changer transitions 30/313 dead transitions. [2021-11-02 22:55:52,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 313 transitions, 3773 flow [2021-11-02 22:55:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:55:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-02 22:55:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2474 transitions. [2021-11-02 22:55:52,328 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7398325358851675 [2021-11-02 22:55:52,328 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2474 transitions. [2021-11-02 22:55:52,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2474 transitions. [2021-11-02 22:55:52,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:52,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2474 transitions. [2021-11-02 22:55:52,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.45454545454545) internal successors, (2474), 22 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:52,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:52,336 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:52,336 INFO L186 Difference]: Start difference. First operand has 377 places, 255 transitions, 2408 flow. Second operand 22 states and 2474 transitions. [2021-11-02 22:55:52,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 313 transitions, 3773 flow [2021-11-02 22:55:52,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 313 transitions, 3508 flow, removed 90 selfloop flow, removed 23 redundant places. [2021-11-02 22:55:52,482 INFO L242 Difference]: Finished difference. Result has 368 places, 262 transitions, 2535 flow [2021-11-02 22:55:52,482 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2535, PETRI_PLACES=368, PETRI_TRANSITIONS=262} [2021-11-02 22:55:52,483 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 232 predicate places. [2021-11-02 22:55:52,483 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 262 transitions, 2535 flow [2021-11-02 22:55:52,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:52,483 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:52,483 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:52,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-02 22:55:52,483 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2004386980, now seen corresponding path program 10 times [2021-11-02 22:55:52,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:52,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818207649] [2021-11-02 22:55:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:52,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:52,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:52,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818207649] [2021-11-02 22:55:52,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818207649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:52,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:52,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:52,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076367136] [2021-11-02 22:55:52,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:52,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:52,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:52,635 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:52,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 262 transitions, 2535 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:52,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:52,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:52,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:53,449 INFO L129 PetriNetUnfolder]: 285/1510 cut-off events. [2021-11-02 22:55:53,449 INFO L130 PetriNetUnfolder]: For 14802/14864 co-relation queries the response was YES. [2021-11-02 22:55:53,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7293 conditions, 1510 events. 285/1510 cut-off events. For 14802/14864 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11755 event pairs, 186 based on Foata normal form. 12/1472 useless extension candidates. Maximal degree in co-relation 7153. Up to 586 conditions per place. [2021-11-02 22:55:53,476 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 104 selfloop transitions, 29 changer transitions 36/298 dead transitions. [2021-11-02 22:55:53,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 298 transitions, 3434 flow [2021-11-02 22:55:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 22:55:53,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-02 22:55:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2033 transitions. [2021-11-02 22:55:53,479 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7430555555555556 [2021-11-02 22:55:53,479 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2033 transitions. [2021-11-02 22:55:53,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2033 transitions. [2021-11-02 22:55:53,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:53,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2033 transitions. [2021-11-02 22:55:53,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.94444444444444) internal successors, (2033), 18 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:53,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:53,484 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 152.0) internal successors, (2888), 19 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:53,484 INFO L186 Difference]: Start difference. First operand has 368 places, 262 transitions, 2535 flow. Second operand 18 states and 2033 transitions. [2021-11-02 22:55:53,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 298 transitions, 3434 flow [2021-11-02 22:55:53,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 298 transitions, 3318 flow, removed 45 selfloop flow, removed 7 redundant places. [2021-11-02 22:55:53,617 INFO L242 Difference]: Finished difference. Result has 372 places, 242 transitions, 2178 flow [2021-11-02 22:55:53,618 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2451, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2178, PETRI_PLACES=372, PETRI_TRANSITIONS=242} [2021-11-02 22:55:53,618 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 236 predicate places. [2021-11-02 22:55:53,619 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 242 transitions, 2178 flow [2021-11-02 22:55:53,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:53,619 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:53,620 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:53,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-02 22:55:53,620 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:53,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1042292998, now seen corresponding path program 11 times [2021-11-02 22:55:53,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:53,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183414860] [2021-11-02 22:55:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:53,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:53,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:53,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183414860] [2021-11-02 22:55:53,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183414860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:53,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:53,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:53,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748179112] [2021-11-02 22:55:53,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:53,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:53,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:53,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:53,780 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:53,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 242 transitions, 2178 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:53,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:53,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:53,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:54,516 INFO L129 PetriNetUnfolder]: 290/1516 cut-off events. [2021-11-02 22:55:54,516 INFO L130 PetriNetUnfolder]: For 14951/15016 co-relation queries the response was YES. [2021-11-02 22:55:54,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7305 conditions, 1516 events. 290/1516 cut-off events. For 14951/15016 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11695 event pairs, 191 based on Foata normal form. 12/1478 useless extension candidates. Maximal degree in co-relation 7165. Up to 585 conditions per place. [2021-11-02 22:55:54,544 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 99 selfloop transitions, 36 changer transitions 28/292 dead transitions. [2021-11-02 22:55:54,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 292 transitions, 3295 flow [2021-11-02 22:55:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:55:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:55:54,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2257 transitions. [2021-11-02 22:55:54,546 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7424342105263158 [2021-11-02 22:55:54,547 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2257 transitions. [2021-11-02 22:55:54,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2257 transitions. [2021-11-02 22:55:54,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:54,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2257 transitions. [2021-11-02 22:55:54,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.85) internal successors, (2257), 20 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:54,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:54,552 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:54,552 INFO L186 Difference]: Start difference. First operand has 372 places, 242 transitions, 2178 flow. Second operand 20 states and 2257 transitions. [2021-11-02 22:55:54,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 292 transitions, 3295 flow [2021-11-02 22:55:54,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 292 transitions, 3053 flow, removed 35 selfloop flow, removed 20 redundant places. [2021-11-02 22:55:54,673 INFO L242 Difference]: Finished difference. Result has 356 places, 251 transitions, 2295 flow [2021-11-02 22:55:54,674 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2295, PETRI_PLACES=356, PETRI_TRANSITIONS=251} [2021-11-02 22:55:54,674 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 220 predicate places. [2021-11-02 22:55:54,674 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 251 transitions, 2295 flow [2021-11-02 22:55:54,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:54,675 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:54,675 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:54,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-02 22:55:54,676 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:54,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:54,676 INFO L85 PathProgramCache]: Analyzing trace with hash 460115714, now seen corresponding path program 12 times [2021-11-02 22:55:54,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:54,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264153562] [2021-11-02 22:55:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:54,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:54,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:54,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264153562] [2021-11-02 22:55:54,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264153562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:54,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:54,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:54,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125314992] [2021-11-02 22:55:54,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:54,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:54,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:54,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:54,837 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:54,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 251 transitions, 2295 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:54,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:54,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:54,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:55,736 INFO L129 PetriNetUnfolder]: 285/1505 cut-off events. [2021-11-02 22:55:55,736 INFO L130 PetriNetUnfolder]: For 14131/14193 co-relation queries the response was YES. [2021-11-02 22:55:55,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7168 conditions, 1505 events. 285/1505 cut-off events. For 14131/14193 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11666 event pairs, 187 based on Foata normal form. 12/1467 useless extension candidates. Maximal degree in co-relation 7032. Up to 585 conditions per place. [2021-11-02 22:55:55,772 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 100 selfloop transitions, 37 changer transitions 29/295 dead transitions. [2021-11-02 22:55:55,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 295 transitions, 3289 flow [2021-11-02 22:55:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:55:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-02 22:55:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2148 transitions. [2021-11-02 22:55:55,776 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7437673130193906 [2021-11-02 22:55:55,776 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2148 transitions. [2021-11-02 22:55:55,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2148 transitions. [2021-11-02 22:55:55,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:55,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2148 transitions. [2021-11-02 22:55:55,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 113.05263157894737) internal successors, (2148), 19 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:55,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:55,783 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:55,784 INFO L186 Difference]: Start difference. First operand has 356 places, 251 transitions, 2295 flow. Second operand 19 states and 2148 transitions. [2021-11-02 22:55:55,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 295 transitions, 3289 flow [2021-11-02 22:55:55,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 295 transitions, 3184 flow, removed 32 selfloop flow, removed 6 redundant places. [2021-11-02 22:55:55,901 INFO L242 Difference]: Finished difference. Result has 367 places, 254 transitions, 2388 flow [2021-11-02 22:55:55,901 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2388, PETRI_PLACES=367, PETRI_TRANSITIONS=254} [2021-11-02 22:55:55,902 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 231 predicate places. [2021-11-02 22:55:55,902 INFO L470 AbstractCegarLoop]: Abstraction has has 367 places, 254 transitions, 2388 flow [2021-11-02 22:55:55,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:55,902 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:55,902 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:55,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-02 22:55:55,902 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:55,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:55,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1747494484, now seen corresponding path program 13 times [2021-11-02 22:55:55,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:55,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340771333] [2021-11-02 22:55:55,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:55,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:56,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:56,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340771333] [2021-11-02 22:55:56,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340771333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:56,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:56,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:56,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602194129] [2021-11-02 22:55:56,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:56,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:56,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:56,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:56,061 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:56,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 254 transitions, 2388 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:56,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:56,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:56,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:56,840 INFO L129 PetriNetUnfolder]: 281/1480 cut-off events. [2021-11-02 22:55:56,841 INFO L130 PetriNetUnfolder]: For 14035/14100 co-relation queries the response was YES. [2021-11-02 22:55:56,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7046 conditions, 1480 events. 281/1480 cut-off events. For 14035/14100 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11375 event pairs, 187 based on Foata normal form. 13/1443 useless extension candidates. Maximal degree in co-relation 6905. Up to 584 conditions per place. [2021-11-02 22:55:56,867 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 100 selfloop transitions, 27 changer transitions 37/293 dead transitions. [2021-11-02 22:55:56,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 293 transitions, 3273 flow [2021-11-02 22:55:56,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 22:55:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-02 22:55:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2364 transitions. [2021-11-02 22:55:56,870 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7406015037593985 [2021-11-02 22:55:56,870 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2364 transitions. [2021-11-02 22:55:56,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2364 transitions. [2021-11-02 22:55:56,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:56,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2364 transitions. [2021-11-02 22:55:56,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.57142857142857) internal successors, (2364), 21 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:56,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:56,874 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:56,874 INFO L186 Difference]: Start difference. First operand has 367 places, 254 transitions, 2388 flow. Second operand 21 states and 2364 transitions. [2021-11-02 22:55:56,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 293 transitions, 3273 flow [2021-11-02 22:55:56,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 293 transitions, 3142 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-11-02 22:55:56,985 INFO L242 Difference]: Finished difference. Result has 379 places, 245 transitions, 2187 flow [2021-11-02 22:55:56,985 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2187, PETRI_PLACES=379, PETRI_TRANSITIONS=245} [2021-11-02 22:55:56,985 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 243 predicate places. [2021-11-02 22:55:56,986 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 245 transitions, 2187 flow [2021-11-02 22:55:56,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:56,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:56,986 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:56,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-02 22:55:56,986 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:56,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1036068676, now seen corresponding path program 14 times [2021-11-02 22:55:56,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:56,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048538933] [2021-11-02 22:55:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:56,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:57,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:57,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048538933] [2021-11-02 22:55:57,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048538933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:57,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:57,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:57,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749309911] [2021-11-02 22:55:57,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:57,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:57,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:57,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:57,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:57,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 245 transitions, 2187 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:57,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:57,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:57,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:57,979 INFO L129 PetriNetUnfolder]: 268/1452 cut-off events. [2021-11-02 22:55:57,979 INFO L130 PetriNetUnfolder]: For 13583/13645 co-relation queries the response was YES. [2021-11-02 22:55:58,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6761 conditions, 1452 events. 268/1452 cut-off events. For 13583/13645 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11186 event pairs, 188 based on Foata normal form. 12/1414 useless extension candidates. Maximal degree in co-relation 6616. Up to 579 conditions per place. [2021-11-02 22:55:58,005 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 90 selfloop transitions, 14 changer transitions 38/271 dead transitions. [2021-11-02 22:55:58,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 271 transitions, 2828 flow [2021-11-02 22:55:58,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:55:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-02 22:55:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2464 transitions. [2021-11-02 22:55:58,007 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2021-11-02 22:55:58,007 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2464 transitions. [2021-11-02 22:55:58,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2464 transitions. [2021-11-02 22:55:58,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:58,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2464 transitions. [2021-11-02 22:55:58,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.0) internal successors, (2464), 22 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:58,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:58,012 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:58,012 INFO L186 Difference]: Start difference. First operand has 379 places, 245 transitions, 2187 flow. Second operand 22 states and 2464 transitions. [2021-11-02 22:55:58,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 271 transitions, 2828 flow [2021-11-02 22:55:58,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 271 transitions, 2653 flow, removed 33 selfloop flow, removed 26 redundant places. [2021-11-02 22:55:58,136 INFO L242 Difference]: Finished difference. Result has 362 places, 222 transitions, 1748 flow [2021-11-02 22:55:58,137 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1748, PETRI_PLACES=362, PETRI_TRANSITIONS=222} [2021-11-02 22:55:58,137 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 226 predicate places. [2021-11-02 22:55:58,137 INFO L470 AbstractCegarLoop]: Abstraction has has 362 places, 222 transitions, 1748 flow [2021-11-02 22:55:58,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:58,137 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:58,137 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:58,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-02 22:55:58,138 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:58,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:58,138 INFO L85 PathProgramCache]: Analyzing trace with hash 133398164, now seen corresponding path program 15 times [2021-11-02 22:55:58,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:58,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729453167] [2021-11-02 22:55:58,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:58,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:58,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:58,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729453167] [2021-11-02 22:55:58,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729453167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:58,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:58,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:58,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106664343] [2021-11-02 22:55:58,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:58,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:58,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:58,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:58,290 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:58,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 222 transitions, 1748 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:58,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:58,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:58,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:55:59,028 INFO L129 PetriNetUnfolder]: 283/1487 cut-off events. [2021-11-02 22:55:59,028 INFO L130 PetriNetUnfolder]: For 13942/14004 co-relation queries the response was YES. [2021-11-02 22:55:59,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6970 conditions, 1487 events. 283/1487 cut-off events. For 13942/14004 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11442 event pairs, 195 based on Foata normal form. 10/1446 useless extension candidates. Maximal degree in co-relation 6834. Up to 579 conditions per place. [2021-11-02 22:55:59,054 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 94 selfloop transitions, 26 changer transitions 33/282 dead transitions. [2021-11-02 22:55:59,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 282 transitions, 2948 flow [2021-11-02 22:55:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:55:59,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-02 22:55:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2702 transitions. [2021-11-02 22:55:59,057 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7406798245614035 [2021-11-02 22:55:59,057 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2702 transitions. [2021-11-02 22:55:59,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2702 transitions. [2021-11-02 22:55:59,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:55:59,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2702 transitions. [2021-11-02 22:55:59,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.58333333333333) internal successors, (2702), 24 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:59,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:59,063 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:59,063 INFO L186 Difference]: Start difference. First operand has 362 places, 222 transitions, 1748 flow. Second operand 24 states and 2702 transitions. [2021-11-02 22:55:59,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 282 transitions, 2948 flow [2021-11-02 22:55:59,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 282 transitions, 2693 flow, removed 47 selfloop flow, removed 23 redundant places. [2021-11-02 22:55:59,154 INFO L242 Difference]: Finished difference. Result has 344 places, 233 transitions, 1904 flow [2021-11-02 22:55:59,154 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1904, PETRI_PLACES=344, PETRI_TRANSITIONS=233} [2021-11-02 22:55:59,154 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 208 predicate places. [2021-11-02 22:55:59,154 INFO L470 AbstractCegarLoop]: Abstraction has has 344 places, 233 transitions, 1904 flow [2021-11-02 22:55:59,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:59,155 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:55:59,155 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:59,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-02 22:55:59,155 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:55:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:59,155 INFO L85 PathProgramCache]: Analyzing trace with hash -518738374, now seen corresponding path program 16 times [2021-11-02 22:55:59,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:59,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228348167] [2021-11-02 22:55:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:59,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:59,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:59,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228348167] [2021-11-02 22:55:59,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228348167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:59,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:59,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:55:59,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818081069] [2021-11-02 22:55:59,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:55:59,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:59,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:55:59,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:55:59,300 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:55:59,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 233 transitions, 1904 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:59,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:55:59,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:55:59,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:00,015 INFO L129 PetriNetUnfolder]: 279/1476 cut-off events. [2021-11-02 22:56:00,015 INFO L130 PetriNetUnfolder]: For 12941/13003 co-relation queries the response was YES. [2021-11-02 22:56:00,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6810 conditions, 1476 events. 279/1476 cut-off events. For 12941/13003 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11354 event pairs, 191 based on Foata normal form. 10/1435 useless extension candidates. Maximal degree in co-relation 6675. Up to 580 conditions per place. [2021-11-02 22:56:00,041 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 93 selfloop transitions, 28 changer transitions 34/284 dead transitions. [2021-11-02 22:56:00,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 284 transitions, 2963 flow [2021-11-02 22:56:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 22:56:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-02 22:56:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2591 transitions. [2021-11-02 22:56:00,043 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7411327231121282 [2021-11-02 22:56:00,043 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2591 transitions. [2021-11-02 22:56:00,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2591 transitions. [2021-11-02 22:56:00,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:00,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2591 transitions. [2021-11-02 22:56:00,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 112.65217391304348) internal successors, (2591), 23 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:00,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:00,049 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:00,049 INFO L186 Difference]: Start difference. First operand has 344 places, 233 transitions, 1904 flow. Second operand 23 states and 2591 transitions. [2021-11-02 22:56:00,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 284 transitions, 2963 flow [2021-11-02 22:56:00,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 284 transitions, 2828 flow, removed 62 selfloop flow, removed 11 redundant places. [2021-11-02 22:56:00,154 INFO L242 Difference]: Finished difference. Result has 356 places, 237 transitions, 2038 flow [2021-11-02 22:56:00,154 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2038, PETRI_PLACES=356, PETRI_TRANSITIONS=237} [2021-11-02 22:56:00,154 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 220 predicate places. [2021-11-02 22:56:00,154 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 237 transitions, 2038 flow [2021-11-02 22:56:00,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:00,154 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:00,155 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:00,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-02 22:56:00,155 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash 706942482, now seen corresponding path program 17 times [2021-11-02 22:56:00,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:00,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380583861] [2021-11-02 22:56:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:00,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:00,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:00,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380583861] [2021-11-02 22:56:00,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380583861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:00,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:00,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:00,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590638954] [2021-11-02 22:56:00,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:00,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:00,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:00,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:00,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:00,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 237 transitions, 2038 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:00,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:00,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:00,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:01,078 INFO L129 PetriNetUnfolder]: 272/1465 cut-off events. [2021-11-02 22:56:01,079 INFO L130 PetriNetUnfolder]: For 12913/12975 co-relation queries the response was YES. [2021-11-02 22:56:01,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6747 conditions, 1465 events. 272/1465 cut-off events. For 12913/12975 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11278 event pairs, 191 based on Foata normal form. 10/1424 useless extension candidates. Maximal degree in co-relation 6606. Up to 580 conditions per place. [2021-11-02 22:56:01,104 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 92 selfloop transitions, 30 changer transitions 28/279 dead transitions. [2021-11-02 22:56:01,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 279 transitions, 2952 flow [2021-11-02 22:56:01,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:56:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:56:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2260 transitions. [2021-11-02 22:56:01,106 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2021-11-02 22:56:01,106 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2260 transitions. [2021-11-02 22:56:01,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2260 transitions. [2021-11-02 22:56:01,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:01,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2260 transitions. [2021-11-02 22:56:01,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 113.0) internal successors, (2260), 20 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:01,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:01,110 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:01,110 INFO L186 Difference]: Start difference. First operand has 356 places, 237 transitions, 2038 flow. Second operand 20 states and 2260 transitions. [2021-11-02 22:56:01,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 279 transitions, 2952 flow [2021-11-02 22:56:01,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 279 transitions, 2792 flow, removed 58 selfloop flow, removed 14 redundant places. [2021-11-02 22:56:01,251 INFO L242 Difference]: Finished difference. Result has 356 places, 244 transitions, 2160 flow [2021-11-02 22:56:01,252 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2160, PETRI_PLACES=356, PETRI_TRANSITIONS=244} [2021-11-02 22:56:01,252 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 220 predicate places. [2021-11-02 22:56:01,252 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 244 transitions, 2160 flow [2021-11-02 22:56:01,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:01,253 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:01,253 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:01,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-02 22:56:01,253 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:01,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:01,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2092074890, now seen corresponding path program 18 times [2021-11-02 22:56:01,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:01,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360691476] [2021-11-02 22:56:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:01,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:01,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:01,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360691476] [2021-11-02 22:56:01,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360691476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:01,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:01,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:01,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077184015] [2021-11-02 22:56:01,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:01,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:01,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:01,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:01,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:01,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 244 transitions, 2160 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:01,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:01,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:01,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:02,185 INFO L129 PetriNetUnfolder]: 277/1470 cut-off events. [2021-11-02 22:56:02,185 INFO L130 PetriNetUnfolder]: For 12801/12860 co-relation queries the response was YES. [2021-11-02 22:56:02,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6800 conditions, 1470 events. 277/1470 cut-off events. For 12801/12860 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11277 event pairs, 196 based on Foata normal form. 8/1427 useless extension candidates. Maximal degree in co-relation 6662. Up to 579 conditions per place. [2021-11-02 22:56:02,208 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 92 selfloop transitions, 38 changer transitions 28/287 dead transitions. [2021-11-02 22:56:02,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 287 transitions, 3115 flow [2021-11-02 22:56:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:56:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-02 22:56:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2149 transitions. [2021-11-02 22:56:02,211 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7441135734072022 [2021-11-02 22:56:02,211 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2149 transitions. [2021-11-02 22:56:02,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2149 transitions. [2021-11-02 22:56:02,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:02,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2149 transitions. [2021-11-02 22:56:02,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 113.10526315789474) internal successors, (2149), 19 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:02,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:02,216 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:02,216 INFO L186 Difference]: Start difference. First operand has 356 places, 244 transitions, 2160 flow. Second operand 19 states and 2149 transitions. [2021-11-02 22:56:02,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 287 transitions, 3115 flow [2021-11-02 22:56:02,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 287 transitions, 2976 flow, removed 47 selfloop flow, removed 7 redundant places. [2021-11-02 22:56:02,315 INFO L242 Difference]: Finished difference. Result has 367 places, 252 transitions, 2332 flow [2021-11-02 22:56:02,315 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2332, PETRI_PLACES=367, PETRI_TRANSITIONS=252} [2021-11-02 22:56:02,315 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 231 predicate places. [2021-11-02 22:56:02,315 INFO L470 AbstractCegarLoop]: Abstraction has has 367 places, 252 transitions, 2332 flow [2021-11-02 22:56:02,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:02,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:02,316 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:02,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-02 22:56:02,316 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:02,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:02,316 INFO L85 PathProgramCache]: Analyzing trace with hash 222581462, now seen corresponding path program 19 times [2021-11-02 22:56:02,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:02,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633762658] [2021-11-02 22:56:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:02,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:02,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:02,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633762658] [2021-11-02 22:56:02,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633762658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:02,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:02,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:02,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354219847] [2021-11-02 22:56:02,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:02,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:02,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:02,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:02,480 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:02,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 252 transitions, 2332 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:02,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:02,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:02,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:03,159 INFO L129 PetriNetUnfolder]: 272/1456 cut-off events. [2021-11-02 22:56:03,159 INFO L130 PetriNetUnfolder]: For 12875/12936 co-relation queries the response was YES. [2021-11-02 22:56:03,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6819 conditions, 1456 events. 272/1456 cut-off events. For 12875/12936 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11180 event pairs, 184 based on Foata normal form. 10/1415 useless extension candidates. Maximal degree in co-relation 6675. Up to 579 conditions per place. [2021-11-02 22:56:03,186 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 99 selfloop transitions, 34 changer transitions 29/291 dead transitions. [2021-11-02 22:56:03,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 291 transitions, 3241 flow [2021-11-02 22:56:03,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:56:03,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:56:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2260 transitions. [2021-11-02 22:56:03,188 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2021-11-02 22:56:03,189 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2260 transitions. [2021-11-02 22:56:03,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2260 transitions. [2021-11-02 22:56:03,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:03,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2260 transitions. [2021-11-02 22:56:03,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 113.0) internal successors, (2260), 20 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:03,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:03,193 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:03,193 INFO L186 Difference]: Start difference. First operand has 367 places, 252 transitions, 2332 flow. Second operand 20 states and 2260 transitions. [2021-11-02 22:56:03,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 291 transitions, 3241 flow [2021-11-02 22:56:03,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 291 transitions, 3111 flow, removed 28 selfloop flow, removed 9 redundant places. [2021-11-02 22:56:03,322 INFO L242 Difference]: Finished difference. Result has 377 places, 256 transitions, 2423 flow [2021-11-02 22:56:03,322 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2423, PETRI_PLACES=377, PETRI_TRANSITIONS=256} [2021-11-02 22:56:03,322 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 241 predicate places. [2021-11-02 22:56:03,322 INFO L470 AbstractCegarLoop]: Abstraction has has 377 places, 256 transitions, 2423 flow [2021-11-02 22:56:03,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:03,323 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:03,323 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:03,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-02 22:56:03,324 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:03,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1153909724, now seen corresponding path program 20 times [2021-11-02 22:56:03,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:03,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785528673] [2021-11-02 22:56:03,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:03,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:03,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:03,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785528673] [2021-11-02 22:56:03,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785528673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:03,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:03,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:03,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377761977] [2021-11-02 22:56:03,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:03,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:03,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:03,485 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:03,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 256 transitions, 2423 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:03,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:03,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:03,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:04,213 INFO L129 PetriNetUnfolder]: 263/1444 cut-off events. [2021-11-02 22:56:04,214 INFO L130 PetriNetUnfolder]: For 12573/12634 co-relation queries the response was YES. [2021-11-02 22:56:04,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 1444 events. 263/1444 cut-off events. For 12573/12634 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11115 event pairs, 186 based on Foata normal form. 10/1403 useless extension candidates. Maximal degree in co-relation 6510. Up to 579 conditions per place. [2021-11-02 22:56:04,240 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 95 selfloop transitions, 19 changer transitions 40/283 dead transitions. [2021-11-02 22:56:04,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 283 transitions, 3079 flow [2021-11-02 22:56:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:56:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:56:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2257 transitions. [2021-11-02 22:56:04,242 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7424342105263158 [2021-11-02 22:56:04,242 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2257 transitions. [2021-11-02 22:56:04,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2257 transitions. [2021-11-02 22:56:04,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:04,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2257 transitions. [2021-11-02 22:56:04,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.85) internal successors, (2257), 20 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:04,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:04,247 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:04,247 INFO L186 Difference]: Start difference. First operand has 377 places, 256 transitions, 2423 flow. Second operand 20 states and 2257 transitions. [2021-11-02 22:56:04,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 283 transitions, 3079 flow [2021-11-02 22:56:04,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 283 transitions, 2970 flow, removed 33 selfloop flow, removed 7 redundant places. [2021-11-02 22:56:04,367 INFO L242 Difference]: Finished difference. Result has 386 places, 239 transitions, 2079 flow [2021-11-02 22:56:04,367 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2079, PETRI_PLACES=386, PETRI_TRANSITIONS=239} [2021-11-02 22:56:04,368 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 250 predicate places. [2021-11-02 22:56:04,368 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 239 transitions, 2079 flow [2021-11-02 22:56:04,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:04,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:04,368 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:04,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-02 22:56:04,369 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:04,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1368031332, now seen corresponding path program 21 times [2021-11-02 22:56:04,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:04,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274433686] [2021-11-02 22:56:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:04,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:04,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:04,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274433686] [2021-11-02 22:56:04,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274433686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:04,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:04,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:04,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539884288] [2021-11-02 22:56:04,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:04,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:04,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:04,514 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:04,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 239 transitions, 2079 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:04,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:04,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:04,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:05,273 INFO L129 PetriNetUnfolder]: 259/1415 cut-off events. [2021-11-02 22:56:05,274 INFO L130 PetriNetUnfolder]: For 12219/12278 co-relation queries the response was YES. [2021-11-02 22:56:05,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6401 conditions, 1415 events. 259/1415 cut-off events. For 12219/12278 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10819 event pairs, 190 based on Foata normal form. 8/1372 useless extension candidates. Maximal degree in co-relation 6250. Up to 578 conditions per place. [2021-11-02 22:56:05,293 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 85 selfloop transitions, 20 changer transitions 36/270 dead transitions. [2021-11-02 22:56:05,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 270 transitions, 2793 flow [2021-11-02 22:56:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:56:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-02 22:56:05,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2473 transitions. [2021-11-02 22:56:05,295 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7395334928229665 [2021-11-02 22:56:05,295 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2473 transitions. [2021-11-02 22:56:05,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2473 transitions. [2021-11-02 22:56:05,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:05,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2473 transitions. [2021-11-02 22:56:05,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.4090909090909) internal successors, (2473), 22 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:05,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:05,300 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:05,300 INFO L186 Difference]: Start difference. First operand has 386 places, 239 transitions, 2079 flow. Second operand 22 states and 2473 transitions. [2021-11-02 22:56:05,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 270 transitions, 2793 flow [2021-11-02 22:56:05,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 270 transitions, 2571 flow, removed 35 selfloop flow, removed 27 redundant places. [2021-11-02 22:56:05,404 INFO L242 Difference]: Finished difference. Result has 366 places, 230 transitions, 1847 flow [2021-11-02 22:56:05,404 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1847, PETRI_PLACES=366, PETRI_TRANSITIONS=230} [2021-11-02 22:56:05,404 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 230 predicate places. [2021-11-02 22:56:05,404 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 230 transitions, 1847 flow [2021-11-02 22:56:05,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:05,405 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:05,405 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:05,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-02 22:56:05,405 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:05,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1352910168, now seen corresponding path program 22 times [2021-11-02 22:56:05,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:05,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16711368] [2021-11-02 22:56:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:05,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:05,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:05,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16711368] [2021-11-02 22:56:05,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16711368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:05,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:05,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:05,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461731887] [2021-11-02 22:56:05,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:05,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:05,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:05,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:05,553 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:05,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 230 transitions, 1847 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:05,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:05,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:05,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:06,160 INFO L129 PetriNetUnfolder]: 247/1366 cut-off events. [2021-11-02 22:56:06,160 INFO L130 PetriNetUnfolder]: For 11155/11214 co-relation queries the response was YES. [2021-11-02 22:56:06,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 1366 events. 247/1366 cut-off events. For 11155/11214 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10360 event pairs, 188 based on Foata normal form. 8/1323 useless extension candidates. Maximal degree in co-relation 5835. Up to 571 conditions per place. [2021-11-02 22:56:06,183 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 73 selfloop transitions, 4 changer transitions 41/247 dead transitions. [2021-11-02 22:56:06,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 247 transitions, 2269 flow [2021-11-02 22:56:06,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 22:56:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-02 22:56:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2352 transitions. [2021-11-02 22:56:06,185 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2021-11-02 22:56:06,185 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2352 transitions. [2021-11-02 22:56:06,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2352 transitions. [2021-11-02 22:56:06,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:06,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2352 transitions. [2021-11-02 22:56:06,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.0) internal successors, (2352), 21 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:06,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:06,190 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:06,190 INFO L186 Difference]: Start difference. First operand has 366 places, 230 transitions, 1847 flow. Second operand 21 states and 2352 transitions. [2021-11-02 22:56:06,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 247 transitions, 2269 flow [2021-11-02 22:56:06,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 247 transitions, 2146 flow, removed 29 selfloop flow, removed 23 redundant places. [2021-11-02 22:56:06,344 INFO L242 Difference]: Finished difference. Result has 348 places, 203 transitions, 1394 flow [2021-11-02 22:56:06,344 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1394, PETRI_PLACES=348, PETRI_TRANSITIONS=203} [2021-11-02 22:56:06,345 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 212 predicate places. [2021-11-02 22:56:06,345 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 203 transitions, 1394 flow [2021-11-02 22:56:06,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:06,346 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:06,346 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:06,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-02 22:56:06,346 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash 976090950, now seen corresponding path program 23 times [2021-11-02 22:56:06,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:06,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915150711] [2021-11-02 22:56:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:06,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:06,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:06,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915150711] [2021-11-02 22:56:06,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915150711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:06,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:06,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:06,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989341574] [2021-11-02 22:56:06,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:06,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:06,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:06,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:06,498 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:06,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 203 transitions, 1394 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:06,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:06,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:06,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:07,476 INFO L129 PetriNetUnfolder]: 270/1448 cut-off events. [2021-11-02 22:56:07,476 INFO L130 PetriNetUnfolder]: For 11817/11876 co-relation queries the response was YES. [2021-11-02 22:56:07,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6373 conditions, 1448 events. 270/1448 cut-off events. For 11817/11876 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11075 event pairs, 190 based on Foata normal form. 8/1404 useless extension candidates. Maximal degree in co-relation 6242. Up to 590 conditions per place. [2021-11-02 22:56:07,501 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 86 selfloop transitions, 23 changer transitions 38/276 dead transitions. [2021-11-02 22:56:07,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 276 transitions, 2589 flow [2021-11-02 22:56:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 22:56:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-02 22:56:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3137 transitions. [2021-11-02 22:56:07,504 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7370770676691729 [2021-11-02 22:56:07,504 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3137 transitions. [2021-11-02 22:56:07,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3137 transitions. [2021-11-02 22:56:07,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:07,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3137 transitions. [2021-11-02 22:56:07,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 112.03571428571429) internal successors, (3137), 28 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:07,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:07,510 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:07,510 INFO L186 Difference]: Start difference. First operand has 348 places, 203 transitions, 1394 flow. Second operand 28 states and 3137 transitions. [2021-11-02 22:56:07,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 276 transitions, 2589 flow [2021-11-02 22:56:07,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 276 transitions, 2422 flow, removed 49 selfloop flow, removed 21 redundant places. [2021-11-02 22:56:07,596 INFO L242 Difference]: Finished difference. Result has 335 places, 216 transitions, 1594 flow [2021-11-02 22:56:07,597 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1594, PETRI_PLACES=335, PETRI_TRANSITIONS=216} [2021-11-02 22:56:07,597 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 199 predicate places. [2021-11-02 22:56:07,597 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 216 transitions, 1594 flow [2021-11-02 22:56:07,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:07,597 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:07,598 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:07,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-02 22:56:07,598 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:07,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1812675720, now seen corresponding path program 24 times [2021-11-02 22:56:07,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:07,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625169031] [2021-11-02 22:56:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:07,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:07,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:07,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625169031] [2021-11-02 22:56:07,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625169031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:07,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:07,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:07,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756495561] [2021-11-02 22:56:07,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:07,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:07,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:07,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:07,755 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:07,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 216 transitions, 1594 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:07,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:07,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:07,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:08,497 INFO L129 PetriNetUnfolder]: 267/1431 cut-off events. [2021-11-02 22:56:08,497 INFO L130 PetriNetUnfolder]: For 11663/11719 co-relation queries the response was YES. [2021-11-02 22:56:08,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 1431 events. 267/1431 cut-off events. For 11663/11719 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10917 event pairs, 192 based on Foata normal form. 7/1385 useless extension candidates. Maximal degree in co-relation 6253. Up to 588 conditions per place. [2021-11-02 22:56:08,520 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 83 selfloop transitions, 25 changer transitions 39/276 dead transitions. [2021-11-02 22:56:08,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 276 transitions, 2712 flow [2021-11-02 22:56:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 22:56:08,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-02 22:56:08,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3026 transitions. [2021-11-02 22:56:08,523 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7373294346978557 [2021-11-02 22:56:08,523 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3026 transitions. [2021-11-02 22:56:08,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3026 transitions. [2021-11-02 22:56:08,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:08,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3026 transitions. [2021-11-02 22:56:08,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 112.07407407407408) internal successors, (3026), 27 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:08,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:08,532 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:08,532 INFO L186 Difference]: Start difference. First operand has 335 places, 216 transitions, 1594 flow. Second operand 27 states and 3026 transitions. [2021-11-02 22:56:08,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 276 transitions, 2712 flow [2021-11-02 22:56:08,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 276 transitions, 2536 flow, removed 72 selfloop flow, removed 18 redundant places. [2021-11-02 22:56:08,625 INFO L242 Difference]: Finished difference. Result has 345 places, 220 transitions, 1735 flow [2021-11-02 22:56:08,625 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1735, PETRI_PLACES=345, PETRI_TRANSITIONS=220} [2021-11-02 22:56:08,625 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 209 predicate places. [2021-11-02 22:56:08,625 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 220 transitions, 1735 flow [2021-11-02 22:56:08,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:08,626 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:08,626 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:08,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-02 22:56:08,626 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:08,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:08,627 INFO L85 PathProgramCache]: Analyzing trace with hash 115779430, now seen corresponding path program 25 times [2021-11-02 22:56:08,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:08,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216628718] [2021-11-02 22:56:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:08,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:08,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:08,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216628718] [2021-11-02 22:56:08,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216628718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:08,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:08,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:08,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301385212] [2021-11-02 22:56:08,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:08,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:08,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:08,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:08,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 220 transitions, 1735 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:08,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:08,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:08,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:09,455 INFO L129 PetriNetUnfolder]: 261/1404 cut-off events. [2021-11-02 22:56:09,455 INFO L130 PetriNetUnfolder]: For 12259/12315 co-relation queries the response was YES. [2021-11-02 22:56:09,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6399 conditions, 1404 events. 261/1404 cut-off events. For 12259/12315 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10626 event pairs, 184 based on Foata normal form. 7/1359 useless extension candidates. Maximal degree in co-relation 6259. Up to 591 conditions per place. [2021-11-02 22:56:09,480 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 84 selfloop transitions, 27 changer transitions 33/273 dead transitions. [2021-11-02 22:56:09,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 273 transitions, 2809 flow [2021-11-02 22:56:09,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:56:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-02 22:56:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2695 transitions. [2021-11-02 22:56:09,482 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7387609649122807 [2021-11-02 22:56:09,483 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2695 transitions. [2021-11-02 22:56:09,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2695 transitions. [2021-11-02 22:56:09,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:09,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2695 transitions. [2021-11-02 22:56:09,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.29166666666667) internal successors, (2695), 24 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:09,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:09,488 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:09,488 INFO L186 Difference]: Start difference. First operand has 345 places, 220 transitions, 1735 flow. Second operand 24 states and 2695 transitions. [2021-11-02 22:56:09,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 273 transitions, 2809 flow [2021-11-02 22:56:09,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 273 transitions, 2595 flow, removed 88 selfloop flow, removed 20 redundant places. [2021-11-02 22:56:09,593 INFO L242 Difference]: Finished difference. Result has 344 places, 227 transitions, 1868 flow [2021-11-02 22:56:09,593 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1648, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1868, PETRI_PLACES=344, PETRI_TRANSITIONS=227} [2021-11-02 22:56:09,594 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 208 predicate places. [2021-11-02 22:56:09,594 INFO L470 AbstractCegarLoop]: Abstraction has has 344 places, 227 transitions, 1868 flow [2021-11-02 22:56:09,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:09,594 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:09,594 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:09,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-02 22:56:09,594 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:09,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:09,595 INFO L85 PathProgramCache]: Analyzing trace with hash -787285304, now seen corresponding path program 26 times [2021-11-02 22:56:09,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:09,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032091453] [2021-11-02 22:56:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:09,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:09,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:09,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032091453] [2021-11-02 22:56:09,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032091453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:09,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:09,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:09,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996752639] [2021-11-02 22:56:09,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:09,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:09,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:09,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:09,735 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:09,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 227 transitions, 1868 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:09,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:09,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:09,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:10,465 INFO L129 PetriNetUnfolder]: 274/1451 cut-off events. [2021-11-02 22:56:10,465 INFO L130 PetriNetUnfolder]: For 12665/12721 co-relation queries the response was YES. [2021-11-02 22:56:10,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6694 conditions, 1451 events. 274/1451 cut-off events. For 12665/12721 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11087 event pairs, 197 based on Foata normal form. 7/1406 useless extension candidates. Maximal degree in co-relation 6557. Up to 601 conditions per place. [2021-11-02 22:56:10,488 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 82 selfloop transitions, 37 changer transitions 33/281 dead transitions. [2021-11-02 22:56:10,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 281 transitions, 2973 flow [2021-11-02 22:56:10,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 22:56:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-02 22:56:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2584 transitions. [2021-11-02 22:56:10,490 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2021-11-02 22:56:10,490 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2584 transitions. [2021-11-02 22:56:10,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2584 transitions. [2021-11-02 22:56:10,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:10,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2584 transitions. [2021-11-02 22:56:10,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 112.34782608695652) internal successors, (2584), 23 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:10,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:10,495 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:10,495 INFO L186 Difference]: Start difference. First operand has 344 places, 227 transitions, 1868 flow. Second operand 23 states and 2584 transitions. [2021-11-02 22:56:10,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 281 transitions, 2973 flow [2021-11-02 22:56:10,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 281 transitions, 2783 flow, removed 78 selfloop flow, removed 12 redundant places. [2021-11-02 22:56:10,605 INFO L242 Difference]: Finished difference. Result has 355 places, 237 transitions, 2079 flow [2021-11-02 22:56:10,606 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2079, PETRI_PLACES=355, PETRI_TRANSITIONS=237} [2021-11-02 22:56:10,606 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 219 predicate places. [2021-11-02 22:56:10,606 INFO L470 AbstractCegarLoop]: Abstraction has has 355 places, 237 transitions, 2079 flow [2021-11-02 22:56:10,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:10,606 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:10,607 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:10,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-02 22:56:10,607 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:10,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1598510160, now seen corresponding path program 27 times [2021-11-02 22:56:10,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:10,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865803871] [2021-11-02 22:56:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:10,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:10,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:10,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865803871] [2021-11-02 22:56:10,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865803871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:10,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:10,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:10,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842226119] [2021-11-02 22:56:10,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:10,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:10,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:10,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:10,753 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:10,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 237 transitions, 2079 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:10,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:10,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:10,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:11,461 INFO L129 PetriNetUnfolder]: 270/1439 cut-off events. [2021-11-02 22:56:11,461 INFO L130 PetriNetUnfolder]: For 12848/12904 co-relation queries the response was YES. [2021-11-02 22:56:11,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6717 conditions, 1439 events. 270/1439 cut-off events. For 12848/12904 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10990 event pairs, 192 based on Foata normal form. 7/1394 useless extension candidates. Maximal degree in co-relation 6574. Up to 599 conditions per place. [2021-11-02 22:56:11,487 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 91 selfloop transitions, 33 changer transitions 34/287 dead transitions. [2021-11-02 22:56:11,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 287 transitions, 3189 flow [2021-11-02 22:56:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:56:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-02 22:56:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2697 transitions. [2021-11-02 22:56:11,490 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7393092105263158 [2021-11-02 22:56:11,490 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2697 transitions. [2021-11-02 22:56:11,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2697 transitions. [2021-11-02 22:56:11,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:11,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2697 transitions. [2021-11-02 22:56:11,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 112.375) internal successors, (2697), 24 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:11,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:11,496 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:11,496 INFO L186 Difference]: Start difference. First operand has 355 places, 237 transitions, 2079 flow. Second operand 24 states and 2697 transitions. [2021-11-02 22:56:11,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 287 transitions, 3189 flow [2021-11-02 22:56:11,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 287 transitions, 2973 flow, removed 78 selfloop flow, removed 14 redundant places. [2021-11-02 22:56:11,636 INFO L242 Difference]: Finished difference. Result has 365 places, 241 transitions, 2179 flow [2021-11-02 22:56:11,636 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2179, PETRI_PLACES=365, PETRI_TRANSITIONS=241} [2021-11-02 22:56:11,637 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 229 predicate places. [2021-11-02 22:56:11,637 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 241 transitions, 2179 flow [2021-11-02 22:56:11,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:11,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:11,638 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:11,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-02 22:56:11,638 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash 689323748, now seen corresponding path program 28 times [2021-11-02 22:56:11,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:11,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474701253] [2021-11-02 22:56:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:11,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:11,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:11,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474701253] [2021-11-02 22:56:11,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474701253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:11,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:11,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:11,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716619234] [2021-11-02 22:56:11,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:11,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:11,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:11,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:11,789 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:11,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 241 transitions, 2179 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:11,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:11,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:11,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:12,592 INFO L129 PetriNetUnfolder]: 262/1418 cut-off events. [2021-11-02 22:56:12,593 INFO L130 PetriNetUnfolder]: For 12548/12604 co-relation queries the response was YES. [2021-11-02 22:56:12,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6567 conditions, 1418 events. 262/1418 cut-off events. For 12548/12604 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10793 event pairs, 185 based on Foata normal form. 7/1373 useless extension candidates. Maximal degree in co-relation 6420. Up to 601 conditions per place. [2021-11-02 22:56:12,636 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 87 selfloop transitions, 35 changer transitions 28/279 dead transitions. [2021-11-02 22:56:12,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 279 transitions, 3025 flow [2021-11-02 22:56:12,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:56:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:56:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2253 transitions. [2021-11-02 22:56:12,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7411184210526316 [2021-11-02 22:56:12,640 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2253 transitions. [2021-11-02 22:56:12,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2253 transitions. [2021-11-02 22:56:12,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:12,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2253 transitions. [2021-11-02 22:56:12,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.65) internal successors, (2253), 20 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:12,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:12,649 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:12,649 INFO L186 Difference]: Start difference. First operand has 365 places, 241 transitions, 2179 flow. Second operand 20 states and 2253 transitions. [2021-11-02 22:56:12,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 279 transitions, 3025 flow [2021-11-02 22:56:12,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 279 transitions, 2877 flow, removed 59 selfloop flow, removed 12 redundant places. [2021-11-02 22:56:12,814 INFO L242 Difference]: Finished difference. Result has 366 places, 248 transitions, 2311 flow [2021-11-02 22:56:12,814 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2311, PETRI_PLACES=366, PETRI_TRANSITIONS=248} [2021-11-02 22:56:12,814 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 230 predicate places. [2021-11-02 22:56:12,814 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 248 transitions, 2311 flow [2021-11-02 22:56:12,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:12,815 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:12,815 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:12,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-02 22:56:12,816 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:12,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:12,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2067708116, now seen corresponding path program 29 times [2021-11-02 22:56:12,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:12,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425671185] [2021-11-02 22:56:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:12,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:12,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:12,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425671185] [2021-11-02 22:56:12,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425671185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:12,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:12,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:12,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227488744] [2021-11-02 22:56:12,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:12,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:12,980 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:12,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 248 transitions, 2311 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:12,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:12,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:12,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:13,839 INFO L129 PetriNetUnfolder]: 258/1418 cut-off events. [2021-11-02 22:56:13,840 INFO L130 PetriNetUnfolder]: For 12312/12368 co-relation queries the response was YES. [2021-11-02 22:56:13,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6521 conditions, 1418 events. 258/1418 cut-off events. For 12312/12368 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10843 event pairs, 183 based on Foata normal form. 7/1373 useless extension candidates. Maximal degree in co-relation 6375. Up to 598 conditions per place. [2021-11-02 22:56:13,882 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 93 selfloop transitions, 35 changer transitions 28/285 dead transitions. [2021-11-02 22:56:13,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 285 transitions, 3169 flow [2021-11-02 22:56:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:56:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:56:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2255 transitions. [2021-11-02 22:56:13,885 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7417763157894737 [2021-11-02 22:56:13,886 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2255 transitions. [2021-11-02 22:56:13,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2255 transitions. [2021-11-02 22:56:13,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:13,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2255 transitions. [2021-11-02 22:56:13,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.75) internal successors, (2255), 20 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:13,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:13,893 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:13,893 INFO L186 Difference]: Start difference. First operand has 366 places, 248 transitions, 2311 flow. Second operand 20 states and 2255 transitions. [2021-11-02 22:56:13,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 285 transitions, 3169 flow [2021-11-02 22:56:14,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 285 transitions, 3018 flow, removed 56 selfloop flow, removed 8 redundant places. [2021-11-02 22:56:14,050 INFO L242 Difference]: Finished difference. Result has 377 places, 254 transitions, 2419 flow [2021-11-02 22:56:14,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2419, PETRI_PLACES=377, PETRI_TRANSITIONS=254} [2021-11-02 22:56:14,051 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 241 predicate places. [2021-11-02 22:56:14,051 INFO L470 AbstractCegarLoop]: Abstraction has has 377 places, 254 transitions, 2419 flow [2021-11-02 22:56:14,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:14,051 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:14,051 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:14,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-02 22:56:14,052 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1653070364, now seen corresponding path program 30 times [2021-11-02 22:56:14,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:14,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130791862] [2021-11-02 22:56:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:14,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:14,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:14,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:14,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130791862] [2021-11-02 22:56:14,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130791862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:14,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:14,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:14,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253814963] [2021-11-02 22:56:14,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:14,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:14,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:14,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:14,206 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:14,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 254 transitions, 2419 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:14,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:14,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:14,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:14,802 INFO L129 PetriNetUnfolder]: 262/1433 cut-off events. [2021-11-02 22:56:14,802 INFO L130 PetriNetUnfolder]: For 12460/12516 co-relation queries the response was YES. [2021-11-02 22:56:14,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 1433 events. 262/1433 cut-off events. For 12460/12516 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10991 event pairs, 183 based on Foata normal form. 7/1388 useless extension candidates. Maximal degree in co-relation 6504. Up to 601 conditions per place. [2021-11-02 22:56:14,826 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 85 selfloop transitions, 51 changer transitions 28/293 dead transitions. [2021-11-02 22:56:14,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 293 transitions, 3358 flow [2021-11-02 22:56:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:56:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-02 22:56:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2142 transitions. [2021-11-02 22:56:14,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7416897506925207 [2021-11-02 22:56:14,828 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2142 transitions. [2021-11-02 22:56:14,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2142 transitions. [2021-11-02 22:56:14,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:14,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2142 transitions. [2021-11-02 22:56:14,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.73684210526316) internal successors, (2142), 19 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:14,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:14,902 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:14,902 INFO L186 Difference]: Start difference. First operand has 377 places, 254 transitions, 2419 flow. Second operand 19 states and 2142 transitions. [2021-11-02 22:56:14,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 293 transitions, 3358 flow [2021-11-02 22:56:15,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 293 transitions, 3230 flow, removed 40 selfloop flow, removed 8 redundant places. [2021-11-02 22:56:15,011 INFO L242 Difference]: Finished difference. Result has 387 places, 262 transitions, 2633 flow [2021-11-02 22:56:15,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2633, PETRI_PLACES=387, PETRI_TRANSITIONS=262} [2021-11-02 22:56:15,012 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 251 predicate places. [2021-11-02 22:56:15,012 INFO L470 AbstractCegarLoop]: Abstraction has has 387 places, 262 transitions, 2633 flow [2021-11-02 22:56:15,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:15,012 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:15,012 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:15,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-02 22:56:15,013 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:15,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:15,013 INFO L85 PathProgramCache]: Analyzing trace with hash -429406190, now seen corresponding path program 31 times [2021-11-02 22:56:15,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:15,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544954467] [2021-11-02 22:56:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:15,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:15,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:15,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544954467] [2021-11-02 22:56:15,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544954467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:15,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:15,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:15,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344581080] [2021-11-02 22:56:15,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:15,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:15,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:15,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:15,173 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:15,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 262 transitions, 2633 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:15,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:15,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:15,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:15,813 INFO L129 PetriNetUnfolder]: 258/1409 cut-off events. [2021-11-02 22:56:15,813 INFO L130 PetriNetUnfolder]: For 12463/12519 co-relation queries the response was YES. [2021-11-02 22:56:15,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6641 conditions, 1409 events. 258/1409 cut-off events. For 12463/12519 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10698 event pairs, 176 based on Foata normal form. 7/1364 useless extension candidates. Maximal degree in co-relation 6485. Up to 597 conditions per place. [2021-11-02 22:56:15,840 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 96 selfloop transitions, 43 changer transitions 29/297 dead transitions. [2021-11-02 22:56:15,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 297 transitions, 3536 flow [2021-11-02 22:56:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:56:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:56:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2253 transitions. [2021-11-02 22:56:15,843 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7411184210526316 [2021-11-02 22:56:15,843 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2253 transitions. [2021-11-02 22:56:15,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2253 transitions. [2021-11-02 22:56:15,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:15,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2253 transitions. [2021-11-02 22:56:15,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.65) internal successors, (2253), 20 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:15,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:15,847 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:15,847 INFO L186 Difference]: Start difference. First operand has 387 places, 262 transitions, 2633 flow. Second operand 20 states and 2253 transitions. [2021-11-02 22:56:15,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 297 transitions, 3536 flow [2021-11-02 22:56:15,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 297 transitions, 3385 flow, removed 28 selfloop flow, removed 9 redundant places. [2021-11-02 22:56:15,972 INFO L242 Difference]: Finished difference. Result has 397 places, 266 transitions, 2730 flow [2021-11-02 22:56:15,973 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2730, PETRI_PLACES=397, PETRI_TRANSITIONS=266} [2021-11-02 22:56:15,973 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 261 predicate places. [2021-11-02 22:56:15,973 INFO L470 AbstractCegarLoop]: Abstraction has has 397 places, 266 transitions, 2730 flow [2021-11-02 22:56:15,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:15,974 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:15,974 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:15,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-02 22:56:15,974 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1136290990, now seen corresponding path program 32 times [2021-11-02 22:56:15,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:15,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555075045] [2021-11-02 22:56:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:15,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:16,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:16,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555075045] [2021-11-02 22:56:16,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555075045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:16,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:16,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:16,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745338967] [2021-11-02 22:56:16,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:16,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:16,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:16,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 266 transitions, 2730 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:16,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:16,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:16,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:16,743 INFO L129 PetriNetUnfolder]: 246/1389 cut-off events. [2021-11-02 22:56:16,743 INFO L130 PetriNetUnfolder]: For 12040/12096 co-relation queries the response was YES. [2021-11-02 22:56:16,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 1389 events. 246/1389 cut-off events. For 12040/12096 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10628 event pairs, 177 based on Foata normal form. 7/1344 useless extension candidates. Maximal degree in co-relation 6246. Up to 590 conditions per place. [2021-11-02 22:56:16,786 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 93 selfloop transitions, 20 changer transitions 42/284 dead transitions. [2021-11-02 22:56:16,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 284 transitions, 3256 flow [2021-11-02 22:56:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:56:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-02 22:56:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2141 transitions. [2021-11-02 22:56:16,790 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7413434903047091 [2021-11-02 22:56:16,790 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2141 transitions. [2021-11-02 22:56:16,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2141 transitions. [2021-11-02 22:56:16,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:16,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2141 transitions. [2021-11-02 22:56:16,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 112.6842105263158) internal successors, (2141), 19 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:16,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:16,797 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 152.0) internal successors, (3040), 20 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:16,798 INFO L186 Difference]: Start difference. First operand has 397 places, 266 transitions, 2730 flow. Second operand 19 states and 2141 transitions. [2021-11-02 22:56:16,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 284 transitions, 3256 flow [2021-11-02 22:56:16,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 284 transitions, 3135 flow, removed 37 selfloop flow, removed 7 redundant places. [2021-11-02 22:56:16,984 INFO L242 Difference]: Finished difference. Result has 403 places, 242 transitions, 2248 flow [2021-11-02 22:56:16,984 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2617, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2248, PETRI_PLACES=403, PETRI_TRANSITIONS=242} [2021-11-02 22:56:16,984 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 267 predicate places. [2021-11-02 22:56:16,985 INFO L470 AbstractCegarLoop]: Abstraction has has 403 places, 242 transitions, 2248 flow [2021-11-02 22:56:16,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:16,985 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:16,986 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:16,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-02 22:56:16,986 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1243368704, now seen corresponding path program 33 times [2021-11-02 22:56:16,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:16,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133843635] [2021-11-02 22:56:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:16,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:17,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:17,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133843635] [2021-11-02 22:56:17,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133843635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:17,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:17,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:17,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064982924] [2021-11-02 22:56:17,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:17,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:17,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:17,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:17,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:17,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 242 transitions, 2248 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:17,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:17,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:17,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:17,828 INFO L129 PetriNetUnfolder]: 237/1351 cut-off events. [2021-11-02 22:56:17,828 INFO L130 PetriNetUnfolder]: For 11460/11516 co-relation queries the response was YES. [2021-11-02 22:56:17,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6087 conditions, 1351 events. 237/1351 cut-off events. For 11460/11516 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10252 event pairs, 176 based on Foata normal form. 7/1306 useless extension candidates. Maximal degree in co-relation 5926. Up to 584 conditions per place. [2021-11-02 22:56:17,852 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 79 selfloop transitions, 17 changer transitions 40/265 dead transitions. [2021-11-02 22:56:17,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 265 transitions, 2839 flow [2021-11-02 22:56:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:56:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-02 22:56:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2250 transitions. [2021-11-02 22:56:17,854 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7401315789473685 [2021-11-02 22:56:17,854 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2250 transitions. [2021-11-02 22:56:17,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2250 transitions. [2021-11-02 22:56:17,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:17,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2250 transitions. [2021-11-02 22:56:17,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.5) internal successors, (2250), 20 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:17,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:17,859 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:17,859 INFO L186 Difference]: Start difference. First operand has 403 places, 242 transitions, 2248 flow. Second operand 20 states and 2250 transitions. [2021-11-02 22:56:17,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 265 transitions, 2839 flow [2021-11-02 22:56:17,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 265 transitions, 2620 flow, removed 37 selfloop flow, removed 25 redundant places. [2021-11-02 22:56:17,965 INFO L242 Difference]: Finished difference. Result has 375 places, 225 transitions, 1840 flow [2021-11-02 22:56:17,965 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1840, PETRI_PLACES=375, PETRI_TRANSITIONS=225} [2021-11-02 22:56:17,965 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 239 predicate places. [2021-11-02 22:56:17,965 INFO L470 AbstractCegarLoop]: Abstraction has has 375 places, 225 transitions, 1840 flow [2021-11-02 22:56:17,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:17,965 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:17,966 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:17,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-02 22:56:17,966 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash 17561052, now seen corresponding path program 34 times [2021-11-02 22:56:17,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:17,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545381738] [2021-11-02 22:56:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:17,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:18,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:18,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545381738] [2021-11-02 22:56:18,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545381738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:18,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:18,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:18,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512250180] [2021-11-02 22:56:18,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:18,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:18,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:18,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:18,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:18,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 225 transitions, 1840 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:18,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:18,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:18,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:18,912 INFO L129 PetriNetUnfolder]: 232/1329 cut-off events. [2021-11-02 22:56:18,912 INFO L130 PetriNetUnfolder]: For 10528/10584 co-relation queries the response was YES. [2021-11-02 22:56:18,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5757 conditions, 1329 events. 232/1329 cut-off events. For 10528/10584 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10028 event pairs, 176 based on Foata normal form. 7/1284 useless extension candidates. Maximal degree in co-relation 5607. Up to 581 conditions per place. [2021-11-02 22:56:18,935 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 70 selfloop transitions, 17 changer transitions 37/253 dead transitions. [2021-11-02 22:56:18,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 253 transitions, 2459 flow [2021-11-02 22:56:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 22:56:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-02 22:56:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2357 transitions. [2021-11-02 22:56:18,937 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7384085213032582 [2021-11-02 22:56:18,937 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2357 transitions. [2021-11-02 22:56:18,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2357 transitions. [2021-11-02 22:56:18,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:18,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2357 transitions. [2021-11-02 22:56:18,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.23809523809524) internal successors, (2357), 21 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:18,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:18,941 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:18,941 INFO L186 Difference]: Start difference. First operand has 375 places, 225 transitions, 1840 flow. Second operand 21 states and 2357 transitions. [2021-11-02 22:56:18,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 253 transitions, 2459 flow [2021-11-02 22:56:19,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 253 transitions, 2264 flow, removed 30 selfloop flow, removed 26 redundant places. [2021-11-02 22:56:19,021 INFO L242 Difference]: Finished difference. Result has 354 places, 216 transitions, 1613 flow [2021-11-02 22:56:19,021 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1613, PETRI_PLACES=354, PETRI_TRANSITIONS=216} [2021-11-02 22:56:19,022 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 218 predicate places. [2021-11-02 22:56:19,022 INFO L470 AbstractCegarLoop]: Abstraction has has 354 places, 216 transitions, 1613 flow [2021-11-02 22:56:19,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:19,022 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:19,023 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:19,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-02 22:56:19,023 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash -929026806, now seen corresponding path program 35 times [2021-11-02 22:56:19,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:19,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146409700] [2021-11-02 22:56:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:19,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:19,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:19,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146409700] [2021-11-02 22:56:19,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146409700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:19,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:19,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:56:19,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211151328] [2021-11-02 22:56:19,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:56:19,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:19,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:56:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:56:19,171 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 152 [2021-11-02 22:56:19,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 216 transitions, 1613 flow. Second operand has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:19,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:19,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 152 [2021-11-02 22:56:19,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:19,967 INFO L129 PetriNetUnfolder]: 221/1263 cut-off events. [2021-11-02 22:56:19,967 INFO L130 PetriNetUnfolder]: For 9748/9804 co-relation queries the response was YES. [2021-11-02 22:56:19,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 1263 events. 221/1263 cut-off events. For 9748/9804 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 9401 event pairs, 177 based on Foata normal form. 7/1218 useless extension candidates. Maximal degree in co-relation 5185. Up to 560 conditions per place. [2021-11-02 22:56:19,987 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 58 selfloop transitions, 2 changer transitions 43/228 dead transitions. [2021-11-02 22:56:19,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 228 transitions, 1915 flow [2021-11-02 22:56:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:56:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-02 22:56:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2453 transitions. [2021-11-02 22:56:19,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7335526315789473 [2021-11-02 22:56:19,989 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2453 transitions. [2021-11-02 22:56:19,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2453 transitions. [2021-11-02 22:56:19,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:19,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2453 transitions. [2021-11-02 22:56:19,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 111.5) internal successors, (2453), 22 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:19,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:19,993 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:19,993 INFO L186 Difference]: Start difference. First operand has 354 places, 216 transitions, 1613 flow. Second operand 22 states and 2453 transitions. [2021-11-02 22:56:19,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 228 transitions, 1915 flow [2021-11-02 22:56:20,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 228 transitions, 1803 flow, removed 23 selfloop flow, removed 24 redundant places. [2021-11-02 22:56:20,069 INFO L242 Difference]: Finished difference. Result has 337 places, 185 transitions, 1150 flow [2021-11-02 22:56:20,069 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1150, PETRI_PLACES=337, PETRI_TRANSITIONS=185} [2021-11-02 22:56:20,069 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 201 predicate places. [2021-11-02 22:56:20,070 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 185 transitions, 1150 flow [2021-11-02 22:56:20,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.54545454545455) internal successors, (1216), 11 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:20,070 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:20,070 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:20,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-02 22:56:20,071 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:20,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:20,071 INFO L85 PathProgramCache]: Analyzing trace with hash 768095992, now seen corresponding path program 1 times [2021-11-02 22:56:20,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:20,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639912742] [2021-11-02 22:56:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:20,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:20,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:20,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639912742] [2021-11-02 22:56:20,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639912742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:20,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:20,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:56:20,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492721206] [2021-11-02 22:56:20,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:56:20,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:20,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:56:20,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:20,261 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 152 [2021-11-02 22:56:20,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 185 transitions, 1150 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:20,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:20,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 152 [2021-11-02 22:56:20,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:20,567 INFO L129 PetriNetUnfolder]: 109/979 cut-off events. [2021-11-02 22:56:20,568 INFO L130 PetriNetUnfolder]: For 8289/8551 co-relation queries the response was YES. [2021-11-02 22:56:20,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3545 conditions, 979 events. 109/979 cut-off events. For 8289/8551 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6709 event pairs, 77 based on Foata normal form. 45/985 useless extension candidates. Maximal degree in co-relation 3415. Up to 70 conditions per place. [2021-11-02 22:56:20,582 INFO L132 encePairwiseOnDemand]: 144/152 looper letters, 35 selfloop transitions, 16 changer transitions 15/190 dead transitions. [2021-11-02 22:56:20,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 190 transitions, 1271 flow [2021-11-02 22:56:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:56:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-02 22:56:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2021-11-02 22:56:20,583 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8539473684210527 [2021-11-02 22:56:20,583 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2021-11-02 22:56:20,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2021-11-02 22:56:20,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:20,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2021-11-02 22:56:20,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:20,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:20,585 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:20,585 INFO L186 Difference]: Start difference. First operand has 337 places, 185 transitions, 1150 flow. Second operand 5 states and 649 transitions. [2021-11-02 22:56:20,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 190 transitions, 1271 flow [2021-11-02 22:56:20,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 190 transitions, 1191 flow, removed 29 selfloop flow, removed 26 redundant places. [2021-11-02 22:56:20,630 INFO L242 Difference]: Finished difference. Result has 278 places, 169 transitions, 1013 flow [2021-11-02 22:56:20,630 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1013, PETRI_PLACES=278, PETRI_TRANSITIONS=169} [2021-11-02 22:56:20,630 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 142 predicate places. [2021-11-02 22:56:20,630 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 169 transitions, 1013 flow [2021-11-02 22:56:20,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:20,630 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:20,631 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:20,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-02 22:56:20,631 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:20,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:20,631 INFO L85 PathProgramCache]: Analyzing trace with hash 71518878, now seen corresponding path program 2 times [2021-11-02 22:56:20,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:20,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357997191] [2021-11-02 22:56:20,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:20,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:20,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:20,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357997191] [2021-11-02 22:56:20,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357997191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:20,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:20,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:56:20,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386451154] [2021-11-02 22:56:20,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:56:20,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:56:20,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:20,716 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 152 [2021-11-02 22:56:20,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 169 transitions, 1013 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:20,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:20,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 152 [2021-11-02 22:56:20,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:21,099 INFO L129 PetriNetUnfolder]: 103/904 cut-off events. [2021-11-02 22:56:21,099 INFO L130 PetriNetUnfolder]: For 7579/7753 co-relation queries the response was YES. [2021-11-02 22:56:21,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3203 conditions, 904 events. 103/904 cut-off events. For 7579/7753 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5943 event pairs, 68 based on Foata normal form. 29/895 useless extension candidates. Maximal degree in co-relation 3094. Up to 64 conditions per place. [2021-11-02 22:56:21,111 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 33 selfloop transitions, 8 changer transitions 13/171 dead transitions. [2021-11-02 22:56:21,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 171 transitions, 1119 flow [2021-11-02 22:56:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:56:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-02 22:56:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2021-11-02 22:56:21,112 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8473684210526315 [2021-11-02 22:56:21,112 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2021-11-02 22:56:21,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2021-11-02 22:56:21,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:21,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2021-11-02 22:56:21,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:21,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:21,114 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:21,114 INFO L186 Difference]: Start difference. First operand has 278 places, 169 transitions, 1013 flow. Second operand 5 states and 644 transitions. [2021-11-02 22:56:21,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 171 transitions, 1119 flow [2021-11-02 22:56:21,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 171 transitions, 1003 flow, removed 45 selfloop flow, removed 26 redundant places. [2021-11-02 22:56:21,142 INFO L242 Difference]: Finished difference. Result has 243 places, 156 transitions, 815 flow [2021-11-02 22:56:21,142 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=815, PETRI_PLACES=243, PETRI_TRANSITIONS=156} [2021-11-02 22:56:21,142 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 107 predicate places. [2021-11-02 22:56:21,142 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 156 transitions, 815 flow [2021-11-02 22:56:21,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:21,143 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:21,143 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:21,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-02 22:56:21,143 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:21,143 INFO L85 PathProgramCache]: Analyzing trace with hash -811535662, now seen corresponding path program 1 times [2021-11-02 22:56:21,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:21,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914191508] [2021-11-02 22:56:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:21,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:21,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:21,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914191508] [2021-11-02 22:56:21,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914191508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:21,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:21,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:56:21,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038483469] [2021-11-02 22:56:21,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:56:21,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:56:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:21,220 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 152 [2021-11-02 22:56:21,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 156 transitions, 815 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:21,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:21,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 152 [2021-11-02 22:56:21,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:21,407 INFO L129 PetriNetUnfolder]: 66/637 cut-off events. [2021-11-02 22:56:21,407 INFO L130 PetriNetUnfolder]: For 2596/2719 co-relation queries the response was YES. [2021-11-02 22:56:21,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 637 events. 66/637 cut-off events. For 2596/2719 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3582 event pairs, 42 based on Foata normal form. 21/633 useless extension candidates. Maximal degree in co-relation 1829. Up to 54 conditions per place. [2021-11-02 22:56:21,414 INFO L132 encePairwiseOnDemand]: 144/152 looper letters, 28 selfloop transitions, 4 changer transitions 13/157 dead transitions. [2021-11-02 22:56:21,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 157 transitions, 877 flow [2021-11-02 22:56:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:56:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-02 22:56:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 640 transitions. [2021-11-02 22:56:21,415 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8421052631578947 [2021-11-02 22:56:21,415 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 640 transitions. [2021-11-02 22:56:21,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 640 transitions. [2021-11-02 22:56:21,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:21,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 640 transitions. [2021-11-02 22:56:21,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:21,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:21,417 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:21,417 INFO L186 Difference]: Start difference. First operand has 243 places, 156 transitions, 815 flow. Second operand 5 states and 640 transitions. [2021-11-02 22:56:21,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 157 transitions, 877 flow [2021-11-02 22:56:21,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 157 transitions, 806 flow, removed 24 selfloop flow, removed 11 redundant places. [2021-11-02 22:56:21,431 INFO L242 Difference]: Finished difference. Result has 228 places, 142 transitions, 627 flow [2021-11-02 22:56:21,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=627, PETRI_PLACES=228, PETRI_TRANSITIONS=142} [2021-11-02 22:56:21,432 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 92 predicate places. [2021-11-02 22:56:21,432 INFO L470 AbstractCegarLoop]: Abstraction has has 228 places, 142 transitions, 627 flow [2021-11-02 22:56:21,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:21,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:21,432 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:21,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-02 22:56:21,432 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2009918854, now seen corresponding path program 2 times [2021-11-02 22:56:21,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:21,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734476165] [2021-11-02 22:56:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:21,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:21,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:21,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734476165] [2021-11-02 22:56:21,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734476165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:21,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:21,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:21,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57461040] [2021-11-02 22:56:21,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:21,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:21,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:21,750 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:21,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 142 transitions, 627 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:21,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:21,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:21,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:23,300 INFO L129 PetriNetUnfolder]: 305/1314 cut-off events. [2021-11-02 22:56:23,300 INFO L130 PetriNetUnfolder]: For 4820/4823 co-relation queries the response was YES. [2021-11-02 22:56:23,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4345 conditions, 1314 events. 305/1314 cut-off events. For 4820/4823 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8505 event pairs, 129 based on Foata normal form. 1/1271 useless extension candidates. Maximal degree in co-relation 4268. Up to 392 conditions per place. [2021-11-02 22:56:23,315 INFO L132 encePairwiseOnDemand]: 125/152 looper letters, 156 selfloop transitions, 36 changer transitions 25/283 dead transitions. [2021-11-02 22:56:23,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 283 transitions, 1993 flow [2021-11-02 22:56:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 22:56:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-02 22:56:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2402 transitions. [2021-11-02 22:56:23,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5643796992481203 [2021-11-02 22:56:23,318 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2402 transitions. [2021-11-02 22:56:23,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2402 transitions. [2021-11-02 22:56:23,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:23,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2402 transitions. [2021-11-02 22:56:23,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 85.78571428571429) internal successors, (2402), 28 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:23,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:23,323 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:23,323 INFO L186 Difference]: Start difference. First operand has 228 places, 142 transitions, 627 flow. Second operand 28 states and 2402 transitions. [2021-11-02 22:56:23,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 283 transitions, 1993 flow [2021-11-02 22:56:23,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 283 transitions, 1910 flow, removed 32 selfloop flow, removed 9 redundant places. [2021-11-02 22:56:23,345 INFO L242 Difference]: Finished difference. Result has 257 places, 167 transitions, 949 flow [2021-11-02 22:56:23,345 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=949, PETRI_PLACES=257, PETRI_TRANSITIONS=167} [2021-11-02 22:56:23,345 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 121 predicate places. [2021-11-02 22:56:23,345 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 167 transitions, 949 flow [2021-11-02 22:56:23,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:23,346 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:23,346 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:23,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-02 22:56:23,346 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:23,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1043132820, now seen corresponding path program 3 times [2021-11-02 22:56:23,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:23,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864470036] [2021-11-02 22:56:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:23,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:23,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:23,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864470036] [2021-11-02 22:56:23,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864470036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:23,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:23,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:56:23,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228917375] [2021-11-02 22:56:23,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:56:23,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:56:23,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:23,436 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 152 [2021-11-02 22:56:23,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 167 transitions, 949 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:23,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:23,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 152 [2021-11-02 22:56:23,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:23,690 INFO L129 PetriNetUnfolder]: 62/536 cut-off events. [2021-11-02 22:56:23,690 INFO L130 PetriNetUnfolder]: For 2224/2270 co-relation queries the response was YES. [2021-11-02 22:56:23,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1769 conditions, 536 events. 62/536 cut-off events. For 2224/2270 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2678 event pairs, 33 based on Foata normal form. 6/518 useless extension candidates. Maximal degree in co-relation 1679. Up to 54 conditions per place. [2021-11-02 22:56:23,701 INFO L132 encePairwiseOnDemand]: 147/152 looper letters, 26 selfloop transitions, 1 changer transitions 9/163 dead transitions. [2021-11-02 22:56:23,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 163 transitions, 970 flow [2021-11-02 22:56:23,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:56:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-02 22:56:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 633 transitions. [2021-11-02 22:56:23,703 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8328947368421052 [2021-11-02 22:56:23,703 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 633 transitions. [2021-11-02 22:56:23,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 633 transitions. [2021-11-02 22:56:23,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:23,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 633 transitions. [2021-11-02 22:56:23,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:23,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:23,706 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:23,706 INFO L186 Difference]: Start difference. First operand has 257 places, 167 transitions, 949 flow. Second operand 5 states and 633 transitions. [2021-11-02 22:56:23,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 163 transitions, 970 flow [2021-11-02 22:56:23,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 163 transitions, 868 flow, removed 44 selfloop flow, removed 10 redundant places. [2021-11-02 22:56:23,729 INFO L242 Difference]: Finished difference. Result has 241 places, 154 transitions, 718 flow [2021-11-02 22:56:23,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=718, PETRI_PLACES=241, PETRI_TRANSITIONS=154} [2021-11-02 22:56:23,730 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 105 predicate places. [2021-11-02 22:56:23,730 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 154 transitions, 718 flow [2021-11-02 22:56:23,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:23,731 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:23,732 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:23,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-02 22:56:23,732 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:23,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1385706930, now seen corresponding path program 3 times [2021-11-02 22:56:23,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:23,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044742356] [2021-11-02 22:56:23,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:23,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:24,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:24,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044742356] [2021-11-02 22:56:24,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044742356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:24,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:24,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:24,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833279879] [2021-11-02 22:56:24,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:24,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:24,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:24,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:24,112 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:24,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 154 transitions, 718 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:24,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:24,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:24,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:25,521 INFO L129 PetriNetUnfolder]: 270/1047 cut-off events. [2021-11-02 22:56:25,521 INFO L130 PetriNetUnfolder]: For 3981/3984 co-relation queries the response was YES. [2021-11-02 22:56:25,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 1047 events. 270/1047 cut-off events. For 3981/3984 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5971 event pairs, 125 based on Foata normal form. 1/1004 useless extension candidates. Maximal degree in co-relation 3731. Up to 392 conditions per place. [2021-11-02 22:56:25,535 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 126 selfloop transitions, 32 changer transitions 26/250 dead transitions. [2021-11-02 22:56:25,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 250 transitions, 1808 flow [2021-11-02 22:56:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:56:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-02 22:56:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2048 transitions. [2021-11-02 22:56:25,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2021-11-02 22:56:25,537 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2048 transitions. [2021-11-02 22:56:25,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2048 transitions. [2021-11-02 22:56:25,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:25,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2048 transitions. [2021-11-02 22:56:25,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 85.33333333333333) internal successors, (2048), 24 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:25,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:25,542 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:25,542 INFO L186 Difference]: Start difference. First operand has 241 places, 154 transitions, 718 flow. Second operand 24 states and 2048 transitions. [2021-11-02 22:56:25,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 250 transitions, 1808 flow [2021-11-02 22:56:25,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 250 transitions, 1761 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-11-02 22:56:25,565 INFO L242 Difference]: Finished difference. Result has 257 places, 167 transitions, 966 flow [2021-11-02 22:56:25,565 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=966, PETRI_PLACES=257, PETRI_TRANSITIONS=167} [2021-11-02 22:56:25,566 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 121 predicate places. [2021-11-02 22:56:25,566 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 167 transitions, 966 flow [2021-11-02 22:56:25,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:25,566 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:25,567 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:25,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-02 22:56:25,567 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:25,568 INFO L85 PathProgramCache]: Analyzing trace with hash 955280, now seen corresponding path program 4 times [2021-11-02 22:56:25,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:25,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051955307] [2021-11-02 22:56:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:25,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:25,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:25,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051955307] [2021-11-02 22:56:25,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051955307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:25,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:25,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:25,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483925346] [2021-11-02 22:56:25,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:25,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:25,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:25,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:25,959 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:25,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 167 transitions, 966 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:25,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:25,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:25,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:28,150 INFO L129 PetriNetUnfolder]: 343/1379 cut-off events. [2021-11-02 22:56:28,150 INFO L130 PetriNetUnfolder]: For 7603/7609 co-relation queries the response was YES. [2021-11-02 22:56:28,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5552 conditions, 1379 events. 343/1379 cut-off events. For 7603/7609 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9076 event pairs, 143 based on Foata normal form. 2/1327 useless extension candidates. Maximal degree in co-relation 5465. Up to 392 conditions per place. [2021-11-02 22:56:28,168 INFO L132 encePairwiseOnDemand]: 127/152 looper letters, 187 selfloop transitions, 27 changer transitions 60/340 dead transitions. [2021-11-02 22:56:28,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 340 transitions, 2841 flow [2021-11-02 22:56:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-02 22:56:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-11-02 22:56:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3084 transitions. [2021-11-02 22:56:28,171 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5635964912280702 [2021-11-02 22:56:28,171 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3084 transitions. [2021-11-02 22:56:28,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3084 transitions. [2021-11-02 22:56:28,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:28,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3084 transitions. [2021-11-02 22:56:28,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 85.66666666666667) internal successors, (3084), 36 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:28,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:28,178 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:28,178 INFO L186 Difference]: Start difference. First operand has 257 places, 167 transitions, 966 flow. Second operand 36 states and 3084 transitions. [2021-11-02 22:56:28,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 340 transitions, 2841 flow [2021-11-02 22:56:28,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 340 transitions, 2530 flow, removed 87 selfloop flow, removed 15 redundant places. [2021-11-02 22:56:28,221 INFO L242 Difference]: Finished difference. Result has 299 places, 175 transitions, 1099 flow [2021-11-02 22:56:28,221 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1099, PETRI_PLACES=299, PETRI_TRANSITIONS=175} [2021-11-02 22:56:28,222 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 163 predicate places. [2021-11-02 22:56:28,222 INFO L470 AbstractCegarLoop]: Abstraction has has 299 places, 175 transitions, 1099 flow [2021-11-02 22:56:28,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:28,222 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:28,223 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:28,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-02 22:56:28,224 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash -834137774, now seen corresponding path program 5 times [2021-11-02 22:56:28,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:28,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183379765] [2021-11-02 22:56:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:28,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:28,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:28,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183379765] [2021-11-02 22:56:28,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183379765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:28,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:28,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:28,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933323247] [2021-11-02 22:56:28,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:28,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:28,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:28,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:28,619 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:28,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 175 transitions, 1099 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:28,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:28,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:28,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:31,414 INFO L129 PetriNetUnfolder]: 324/1415 cut-off events. [2021-11-02 22:56:31,414 INFO L130 PetriNetUnfolder]: For 8426/8431 co-relation queries the response was YES. [2021-11-02 22:56:31,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5754 conditions, 1415 events. 324/1415 cut-off events. For 8426/8431 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9804 event pairs, 135 based on Foata normal form. 2/1371 useless extension candidates. Maximal degree in co-relation 5642. Up to 392 conditions per place. [2021-11-02 22:56:31,435 INFO L132 encePairwiseOnDemand]: 127/152 looper letters, 156 selfloop transitions, 28 changer transitions 63/313 dead transitions. [2021-11-02 22:56:31,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 313 transitions, 2795 flow [2021-11-02 22:56:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-02 22:56:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-02 22:56:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3135 transitions. [2021-11-02 22:56:31,438 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5574324324324325 [2021-11-02 22:56:31,438 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3135 transitions. [2021-11-02 22:56:31,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3135 transitions. [2021-11-02 22:56:31,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:31,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3135 transitions. [2021-11-02 22:56:31,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 84.72972972972973) internal successors, (3135), 37 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:31,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 152.0) internal successors, (5776), 38 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:31,445 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 152.0) internal successors, (5776), 38 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:31,445 INFO L186 Difference]: Start difference. First operand has 299 places, 175 transitions, 1099 flow. Second operand 37 states and 3135 transitions. [2021-11-02 22:56:31,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 313 transitions, 2795 flow [2021-11-02 22:56:31,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 313 transitions, 2385 flow, removed 188 selfloop flow, removed 29 redundant places. [2021-11-02 22:56:31,500 INFO L242 Difference]: Finished difference. Result has 310 places, 174 transitions, 1132 flow [2021-11-02 22:56:31,500 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1132, PETRI_PLACES=310, PETRI_TRANSITIONS=174} [2021-11-02 22:56:31,501 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 174 predicate places. [2021-11-02 22:56:31,501 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 174 transitions, 1132 flow [2021-11-02 22:56:31,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:31,501 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:31,502 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:31,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-02 22:56:31,502 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:31,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:31,503 INFO L85 PathProgramCache]: Analyzing trace with hash 878819668, now seen corresponding path program 6 times [2021-11-02 22:56:31,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:31,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079516368] [2021-11-02 22:56:31,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:31,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:31,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:31,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079516368] [2021-11-02 22:56:31,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079516368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:31,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:31,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:31,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893150207] [2021-11-02 22:56:31,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:31,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:31,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:31,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:31,834 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:31,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 174 transitions, 1132 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:31,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:31,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:31,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:33,431 INFO L129 PetriNetUnfolder]: 322/1265 cut-off events. [2021-11-02 22:56:33,431 INFO L130 PetriNetUnfolder]: For 8710/8716 co-relation queries the response was YES. [2021-11-02 22:56:33,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 1265 events. 322/1265 cut-off events. For 8710/8716 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7845 event pairs, 141 based on Foata normal form. 2/1213 useless extension candidates. Maximal degree in co-relation 5385. Up to 392 conditions per place. [2021-11-02 22:56:33,465 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 150 selfloop transitions, 41 changer transitions 29/286 dead transitions. [2021-11-02 22:56:33,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 286 transitions, 2980 flow [2021-11-02 22:56:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:56:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-02 22:56:33,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2052 transitions. [2021-11-02 22:56:33,469 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5625 [2021-11-02 22:56:33,469 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2052 transitions. [2021-11-02 22:56:33,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2052 transitions. [2021-11-02 22:56:33,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:33,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2052 transitions. [2021-11-02 22:56:33,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 85.5) internal successors, (2052), 24 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:33,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:33,478 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:33,478 INFO L186 Difference]: Start difference. First operand has 310 places, 174 transitions, 1132 flow. Second operand 24 states and 2052 transitions. [2021-11-02 22:56:33,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 286 transitions, 2980 flow [2021-11-02 22:56:33,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 286 transitions, 2816 flow, removed 69 selfloop flow, removed 32 redundant places. [2021-11-02 22:56:33,534 INFO L242 Difference]: Finished difference. Result has 281 places, 193 transitions, 1562 flow [2021-11-02 22:56:33,534 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1562, PETRI_PLACES=281, PETRI_TRANSITIONS=193} [2021-11-02 22:56:33,534 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 145 predicate places. [2021-11-02 22:56:33,534 INFO L470 AbstractCegarLoop]: Abstraction has has 281 places, 193 transitions, 1562 flow [2021-11-02 22:56:33,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:33,535 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:33,535 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:33,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-02 22:56:33,535 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:33,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:33,535 INFO L85 PathProgramCache]: Analyzing trace with hash -221763498, now seen corresponding path program 7 times [2021-11-02 22:56:33,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:33,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61316654] [2021-11-02 22:56:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:33,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:33,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:33,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61316654] [2021-11-02 22:56:33,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61316654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:33,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:33,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:33,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693447740] [2021-11-02 22:56:33,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:33,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:33,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:33,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:33,850 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:33,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 193 transitions, 1562 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:33,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:33,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:33,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:35,685 INFO L129 PetriNetUnfolder]: 335/1376 cut-off events. [2021-11-02 22:56:35,686 INFO L130 PetriNetUnfolder]: For 8823/8830 co-relation queries the response was YES. [2021-11-02 22:56:35,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5900 conditions, 1376 events. 335/1376 cut-off events. For 8823/8830 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 9076 event pairs, 131 based on Foata normal form. 2/1325 useless extension candidates. Maximal degree in co-relation 5802. Up to 392 conditions per place. [2021-11-02 22:56:35,703 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 166 selfloop transitions, 40 changer transitions 60/332 dead transitions. [2021-11-02 22:56:35,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 332 transitions, 3361 flow [2021-11-02 22:56:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-02 22:56:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-02 22:56:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2972 transitions. [2021-11-02 22:56:35,705 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5586466165413534 [2021-11-02 22:56:35,705 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2972 transitions. [2021-11-02 22:56:35,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2972 transitions. [2021-11-02 22:56:35,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:35,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2972 transitions. [2021-11-02 22:56:35,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 84.91428571428571) internal successors, (2972), 35 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:35,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 152.0) internal successors, (5472), 36 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:35,713 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 152.0) internal successors, (5472), 36 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:35,713 INFO L186 Difference]: Start difference. First operand has 281 places, 193 transitions, 1562 flow. Second operand 35 states and 2972 transitions. [2021-11-02 22:56:35,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 332 transitions, 3361 flow [2021-11-02 22:56:35,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 332 transitions, 3052 flow, removed 105 selfloop flow, removed 14 redundant places. [2021-11-02 22:56:35,774 INFO L242 Difference]: Finished difference. Result has 321 places, 193 transitions, 1581 flow [2021-11-02 22:56:35,774 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1581, PETRI_PLACES=321, PETRI_TRANSITIONS=193} [2021-11-02 22:56:35,774 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 185 predicate places. [2021-11-02 22:56:35,774 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 193 transitions, 1581 flow [2021-11-02 22:56:35,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:35,775 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:35,775 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:35,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-02 22:56:35,776 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:35,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:35,776 INFO L85 PathProgramCache]: Analyzing trace with hash -93453872, now seen corresponding path program 8 times [2021-11-02 22:56:35,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:35,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612451445] [2021-11-02 22:56:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:35,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:36,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:36,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612451445] [2021-11-02 22:56:36,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612451445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:36,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:36,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:36,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772476430] [2021-11-02 22:56:36,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:36,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:36,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:36,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:36,127 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:36,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 193 transitions, 1581 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:36,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:36,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:36,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:38,416 INFO L129 PetriNetUnfolder]: 358/1488 cut-off events. [2021-11-02 22:56:38,416 INFO L130 PetriNetUnfolder]: For 13275/13283 co-relation queries the response was YES. [2021-11-02 22:56:38,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6878 conditions, 1488 events. 358/1488 cut-off events. For 13275/13283 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10152 event pairs, 152 based on Foata normal form. 2/1433 useless extension candidates. Maximal degree in co-relation 6757. Up to 392 conditions per place. [2021-11-02 22:56:38,442 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 180 selfloop transitions, 39 changer transitions 51/336 dead transitions. [2021-11-02 22:56:38,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 336 transitions, 3776 flow [2021-11-02 22:56:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 22:56:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-11-02 22:56:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2725 transitions. [2021-11-02 22:56:38,445 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5602384868421053 [2021-11-02 22:56:38,445 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2725 transitions. [2021-11-02 22:56:38,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2725 transitions. [2021-11-02 22:56:38,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:38,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2725 transitions. [2021-11-02 22:56:38,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 85.15625) internal successors, (2725), 32 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:38,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:38,451 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:38,451 INFO L186 Difference]: Start difference. First operand has 321 places, 193 transitions, 1581 flow. Second operand 32 states and 2725 transitions. [2021-11-02 22:56:38,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 336 transitions, 3776 flow [2021-11-02 22:56:38,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 336 transitions, 3458 flow, removed 127 selfloop flow, removed 33 redundant places. [2021-11-02 22:56:38,523 INFO L242 Difference]: Finished difference. Result has 317 places, 200 transitions, 1870 flow [2021-11-02 22:56:38,524 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1870, PETRI_PLACES=317, PETRI_TRANSITIONS=200} [2021-11-02 22:56:38,524 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 181 predicate places. [2021-11-02 22:56:38,524 INFO L470 AbstractCegarLoop]: Abstraction has has 317 places, 200 transitions, 1870 flow [2021-11-02 22:56:38,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:38,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:38,524 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:38,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-02 22:56:38,525 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:38,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:38,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1007712320, now seen corresponding path program 9 times [2021-11-02 22:56:38,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:38,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309641129] [2021-11-02 22:56:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:38,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:38,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:38,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309641129] [2021-11-02 22:56:38,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309641129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:38,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:38,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:38,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600863043] [2021-11-02 22:56:38,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:38,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:38,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:38,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:38,901 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:38,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 200 transitions, 1870 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:38,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:38,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:38,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:41,062 INFO L129 PetriNetUnfolder]: 420/1894 cut-off events. [2021-11-02 22:56:41,062 INFO L130 PetriNetUnfolder]: For 20865/20884 co-relation queries the response was YES. [2021-11-02 22:56:41,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9137 conditions, 1894 events. 420/1894 cut-off events. For 20865/20884 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14518 event pairs, 168 based on Foata normal form. 5/1830 useless extension candidates. Maximal degree in co-relation 9019. Up to 392 conditions per place. [2021-11-02 22:56:41,094 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 189 selfloop transitions, 47 changer transitions 71/373 dead transitions. [2021-11-02 22:56:41,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 373 transitions, 4506 flow [2021-11-02 22:56:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-02 22:56:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-11-02 22:56:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2915 transitions. [2021-11-02 22:56:41,097 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5640479876160991 [2021-11-02 22:56:41,097 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2915 transitions. [2021-11-02 22:56:41,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2915 transitions. [2021-11-02 22:56:41,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:41,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2915 transitions. [2021-11-02 22:56:41,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 85.73529411764706) internal successors, (2915), 34 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:41,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:41,103 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:41,103 INFO L186 Difference]: Start difference. First operand has 317 places, 200 transitions, 1870 flow. Second operand 34 states and 2915 transitions. [2021-11-02 22:56:41,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 373 transitions, 4506 flow [2021-11-02 22:56:41,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 373 transitions, 4071 flow, removed 169 selfloop flow, removed 26 redundant places. [2021-11-02 22:56:41,205 INFO L242 Difference]: Finished difference. Result has 331 places, 207 transitions, 2134 flow [2021-11-02 22:56:41,205 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2134, PETRI_PLACES=331, PETRI_TRANSITIONS=207} [2021-11-02 22:56:41,206 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 195 predicate places. [2021-11-02 22:56:41,206 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 207 transitions, 2134 flow [2021-11-02 22:56:41,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:41,206 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:41,206 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:41,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-02 22:56:41,206 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:41,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash 872829116, now seen corresponding path program 10 times [2021-11-02 22:56:41,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:41,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877312760] [2021-11-02 22:56:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:41,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:41,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:41,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877312760] [2021-11-02 22:56:41,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877312760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:41,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:41,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:41,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901562021] [2021-11-02 22:56:41,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:41,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:41,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:41,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:41,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 207 transitions, 2134 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:41,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:41,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:41,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:43,618 INFO L129 PetriNetUnfolder]: 396/1721 cut-off events. [2021-11-02 22:56:43,619 INFO L130 PetriNetUnfolder]: For 19377/19393 co-relation queries the response was YES. [2021-11-02 22:56:43,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8536 conditions, 1721 events. 396/1721 cut-off events. For 19377/19393 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12514 event pairs, 195 based on Foata normal form. 4/1657 useless extension candidates. Maximal degree in co-relation 8409. Up to 392 conditions per place. [2021-11-02 22:56:43,645 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 184 selfloop transitions, 45 changer transitions 59/354 dead transitions. [2021-11-02 22:56:43,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 354 transitions, 4281 flow [2021-11-02 22:56:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-02 22:56:43,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-11-02 22:56:43,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2899 transitions. [2021-11-02 22:56:43,648 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5609520123839009 [2021-11-02 22:56:43,648 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2899 transitions. [2021-11-02 22:56:43,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2899 transitions. [2021-11-02 22:56:43,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:43,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2899 transitions. [2021-11-02 22:56:43,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 85.26470588235294) internal successors, (2899), 34 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:43,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:43,654 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:43,654 INFO L186 Difference]: Start difference. First operand has 331 places, 207 transitions, 2134 flow. Second operand 34 states and 2899 transitions. [2021-11-02 22:56:43,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 354 transitions, 4281 flow [2021-11-02 22:56:43,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 354 transitions, 3927 flow, removed 149 selfloop flow, removed 28 redundant places. [2021-11-02 22:56:43,738 INFO L242 Difference]: Finished difference. Result has 338 places, 208 transitions, 2244 flow [2021-11-02 22:56:43,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2244, PETRI_PLACES=338, PETRI_TRANSITIONS=208} [2021-11-02 22:56:43,738 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 202 predicate places. [2021-11-02 22:56:43,739 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 208 transitions, 2244 flow [2021-11-02 22:56:43,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:43,739 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:43,739 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:43,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-02 22:56:43,739 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash 785377180, now seen corresponding path program 11 times [2021-11-02 22:56:43,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:43,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280962340] [2021-11-02 22:56:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:43,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:44,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:44,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280962340] [2021-11-02 22:56:44,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280962340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:44,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:44,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:44,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357119398] [2021-11-02 22:56:44,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:44,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:44,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:44,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:44,058 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:44,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 208 transitions, 2244 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:44,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:44,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:44,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:45,982 INFO L129 PetriNetUnfolder]: 412/1850 cut-off events. [2021-11-02 22:56:45,983 INFO L130 PetriNetUnfolder]: For 21551/21567 co-relation queries the response was YES. [2021-11-02 22:56:46,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9123 conditions, 1850 events. 412/1850 cut-off events. For 21551/21567 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14068 event pairs, 179 based on Foata normal form. 4/1786 useless extension candidates. Maximal degree in co-relation 8993. Up to 392 conditions per place. [2021-11-02 22:56:46,019 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 186 selfloop transitions, 49 changer transitions 65/366 dead transitions. [2021-11-02 22:56:46,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 366 transitions, 4672 flow [2021-11-02 22:56:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-02 22:56:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-11-02 22:56:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2829 transitions. [2021-11-02 22:56:46,021 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5639952153110048 [2021-11-02 22:56:46,021 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2829 transitions. [2021-11-02 22:56:46,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2829 transitions. [2021-11-02 22:56:46,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:46,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2829 transitions. [2021-11-02 22:56:46,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 85.72727272727273) internal successors, (2829), 33 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:46,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:46,028 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:46,028 INFO L186 Difference]: Start difference. First operand has 338 places, 208 transitions, 2244 flow. Second operand 33 states and 2829 transitions. [2021-11-02 22:56:46,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 366 transitions, 4672 flow [2021-11-02 22:56:46,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 366 transitions, 4010 flow, removed 162 selfloop flow, removed 35 redundant places. [2021-11-02 22:56:46,129 INFO L242 Difference]: Finished difference. Result has 335 places, 209 transitions, 2150 flow [2021-11-02 22:56:46,129 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2150, PETRI_PLACES=335, PETRI_TRANSITIONS=209} [2021-11-02 22:56:46,129 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 199 predicate places. [2021-11-02 22:56:46,129 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 209 transitions, 2150 flow [2021-11-02 22:56:46,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:46,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:46,130 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:46,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-02 22:56:46,130 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:46,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1696208238, now seen corresponding path program 12 times [2021-11-02 22:56:46,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:46,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364029831] [2021-11-02 22:56:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:46,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:46,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:46,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364029831] [2021-11-02 22:56:46,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364029831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:46,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:46,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:46,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935378240] [2021-11-02 22:56:46,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:46,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:46,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:46,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:46,458 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:46,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 209 transitions, 2150 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:46,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:46,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:46,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:48,293 INFO L129 PetriNetUnfolder]: 394/1728 cut-off events. [2021-11-02 22:56:48,293 INFO L130 PetriNetUnfolder]: For 17453/17472 co-relation queries the response was YES. [2021-11-02 22:56:48,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8503 conditions, 1728 events. 394/1728 cut-off events. For 17453/17472 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12778 event pairs, 175 based on Foata normal form. 5/1671 useless extension candidates. Maximal degree in co-relation 8377. Up to 392 conditions per place. [2021-11-02 22:56:48,323 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 179 selfloop transitions, 50 changer transitions 61/356 dead transitions. [2021-11-02 22:56:48,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 356 transitions, 4410 flow [2021-11-02 22:56:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 22:56:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-11-02 22:56:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2741 transitions. [2021-11-02 22:56:48,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5635279605263158 [2021-11-02 22:56:48,326 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2741 transitions. [2021-11-02 22:56:48,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2741 transitions. [2021-11-02 22:56:48,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:48,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2741 transitions. [2021-11-02 22:56:48,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 85.65625) internal successors, (2741), 32 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:48,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:48,332 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:48,332 INFO L186 Difference]: Start difference. First operand has 335 places, 209 transitions, 2150 flow. Second operand 32 states and 2741 transitions. [2021-11-02 22:56:48,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 356 transitions, 4410 flow [2021-11-02 22:56:48,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 356 transitions, 3938 flow, removed 147 selfloop flow, removed 31 redundant places. [2021-11-02 22:56:48,419 INFO L242 Difference]: Finished difference. Result has 335 places, 210 transitions, 2164 flow [2021-11-02 22:56:48,419 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2164, PETRI_PLACES=335, PETRI_TRANSITIONS=210} [2021-11-02 22:56:48,419 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 199 predicate places. [2021-11-02 22:56:48,419 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 210 transitions, 2164 flow [2021-11-02 22:56:48,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:48,420 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:48,420 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:48,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-02 22:56:48,420 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1008920498, now seen corresponding path program 13 times [2021-11-02 22:56:48,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:48,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966101563] [2021-11-02 22:56:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:48,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:48,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:48,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966101563] [2021-11-02 22:56:48,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966101563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:48,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:48,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:48,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866956433] [2021-11-02 22:56:48,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:48,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:48,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:48,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:48,764 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:48,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 210 transitions, 2164 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:48,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:48,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:48,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:50,225 INFO L129 PetriNetUnfolder]: 382/1636 cut-off events. [2021-11-02 22:56:50,225 INFO L130 PetriNetUnfolder]: For 16935/16951 co-relation queries the response was YES. [2021-11-02 22:56:50,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8085 conditions, 1636 events. 382/1636 cut-off events. For 16935/16951 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11575 event pairs, 174 based on Foata normal form. 4/1572 useless extension candidates. Maximal degree in co-relation 7960. Up to 392 conditions per place. [2021-11-02 22:56:50,250 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 155 selfloop transitions, 75 changer transitions 39/335 dead transitions. [2021-11-02 22:56:50,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 335 transitions, 4479 flow [2021-11-02 22:56:50,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:56:50,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-02 22:56:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2067 transitions. [2021-11-02 22:56:50,252 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5666118421052632 [2021-11-02 22:56:50,252 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2067 transitions. [2021-11-02 22:56:50,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2067 transitions. [2021-11-02 22:56:50,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:50,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2067 transitions. [2021-11-02 22:56:50,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.125) internal successors, (2067), 24 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:50,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:50,257 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:50,257 INFO L186 Difference]: Start difference. First operand has 335 places, 210 transitions, 2164 flow. Second operand 24 states and 2067 transitions. [2021-11-02 22:56:50,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 335 transitions, 4479 flow [2021-11-02 22:56:50,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 335 transitions, 4017 flow, removed 105 selfloop flow, removed 30 redundant places. [2021-11-02 22:56:50,325 INFO L242 Difference]: Finished difference. Result has 320 places, 240 transitions, 2809 flow [2021-11-02 22:56:50,325 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2809, PETRI_PLACES=320, PETRI_TRANSITIONS=240} [2021-11-02 22:56:50,325 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 184 predicate places. [2021-11-02 22:56:50,326 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 240 transitions, 2809 flow [2021-11-02 22:56:50,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:50,326 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:50,326 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:50,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-02 22:56:50,326 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:50,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1161854082, now seen corresponding path program 14 times [2021-11-02 22:56:50,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:50,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995457944] [2021-11-02 22:56:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:50,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:50,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:50,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995457944] [2021-11-02 22:56:50,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995457944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:50,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:50,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:50,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875814139] [2021-11-02 22:56:50,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:50,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:50,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:50,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:50,667 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:50,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 240 transitions, 2809 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:50,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:50,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:50,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:52,285 INFO L129 PetriNetUnfolder]: 388/1690 cut-off events. [2021-11-02 22:56:52,285 INFO L130 PetriNetUnfolder]: For 15399/15412 co-relation queries the response was YES. [2021-11-02 22:56:52,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8271 conditions, 1690 events. 388/1690 cut-off events. For 15399/15412 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12308 event pairs, 168 based on Foata normal form. 4/1628 useless extension candidates. Maximal degree in co-relation 8155. Up to 392 conditions per place. [2021-11-02 22:56:52,314 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 178 selfloop transitions, 67 changer transitions 53/364 dead transitions. [2021-11-02 22:56:52,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 364 transitions, 4717 flow [2021-11-02 22:56:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:56:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-02 22:56:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2652 transitions. [2021-11-02 22:56:52,317 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5628183361629882 [2021-11-02 22:56:52,317 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2652 transitions. [2021-11-02 22:56:52,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2652 transitions. [2021-11-02 22:56:52,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:52,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2652 transitions. [2021-11-02 22:56:52,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 85.54838709677419) internal successors, (2652), 31 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:52,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:52,323 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:52,323 INFO L186 Difference]: Start difference. First operand has 320 places, 240 transitions, 2809 flow. Second operand 31 states and 2652 transitions. [2021-11-02 22:56:52,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 364 transitions, 4717 flow [2021-11-02 22:56:52,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 364 transitions, 4020 flow, removed 301 selfloop flow, removed 14 redundant places. [2021-11-02 22:56:52,420 INFO L242 Difference]: Finished difference. Result has 348 places, 238 transitions, 2606 flow [2021-11-02 22:56:52,420 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2606, PETRI_PLACES=348, PETRI_TRANSITIONS=238} [2021-11-02 22:56:52,420 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 212 predicate places. [2021-11-02 22:56:52,420 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 238 transitions, 2606 flow [2021-11-02 22:56:52,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:52,421 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:52,421 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:52,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-02 22:56:52,421 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:52,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:52,421 INFO L85 PathProgramCache]: Analyzing trace with hash -248651454, now seen corresponding path program 15 times [2021-11-02 22:56:52,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:52,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957340984] [2021-11-02 22:56:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:52,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:52,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:52,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957340984] [2021-11-02 22:56:52,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957340984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:52,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:52,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:52,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974081015] [2021-11-02 22:56:52,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:52,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:52,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:52,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 238 transitions, 2606 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:52,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:52,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:52,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:54,504 INFO L129 PetriNetUnfolder]: 376/1644 cut-off events. [2021-11-02 22:56:54,504 INFO L130 PetriNetUnfolder]: For 14310/14324 co-relation queries the response was YES. [2021-11-02 22:56:54,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7904 conditions, 1644 events. 376/1644 cut-off events. For 14310/14324 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11923 event pairs, 168 based on Foata normal form. 5/1590 useless extension candidates. Maximal degree in co-relation 7776. Up to 392 conditions per place. [2021-11-02 22:56:54,535 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 160 selfloop transitions, 69 changer transitions 49/344 dead transitions. [2021-11-02 22:56:54,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 344 transitions, 4259 flow [2021-11-02 22:56:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:56:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-02 22:56:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2555 transitions. [2021-11-02 22:56:54,538 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5603070175438597 [2021-11-02 22:56:54,538 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2555 transitions. [2021-11-02 22:56:54,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2555 transitions. [2021-11-02 22:56:54,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:54,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2555 transitions. [2021-11-02 22:56:54,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 85.16666666666667) internal successors, (2555), 30 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,547 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,547 INFO L186 Difference]: Start difference. First operand has 348 places, 238 transitions, 2606 flow. Second operand 30 states and 2555 transitions. [2021-11-02 22:56:54,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 344 transitions, 4259 flow [2021-11-02 22:56:54,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 344 transitions, 3865 flow, removed 87 selfloop flow, removed 30 redundant places. [2021-11-02 22:56:54,637 INFO L242 Difference]: Finished difference. Result has 346 places, 240 transitions, 2611 flow [2021-11-02 22:56:54,638 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2611, PETRI_PLACES=346, PETRI_TRANSITIONS=240} [2021-11-02 22:56:54,638 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 210 predicate places. [2021-11-02 22:56:54,638 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 240 transitions, 2611 flow [2021-11-02 22:56:54,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,639 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:54,639 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:54,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-02 22:56:54,639 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:54,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1082689848, now seen corresponding path program 16 times [2021-11-02 22:56:54,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:54,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336602353] [2021-11-02 22:56:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:54,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:54,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:54,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336602353] [2021-11-02 22:56:54,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336602353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:54,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:54,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:54,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128643872] [2021-11-02 22:56:54,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:54,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:54,997 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:54,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 240 transitions, 2611 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:54,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:54,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:54,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:56,633 INFO L129 PetriNetUnfolder]: 374/1624 cut-off events. [2021-11-02 22:56:56,633 INFO L130 PetriNetUnfolder]: For 13641/13655 co-relation queries the response was YES. [2021-11-02 22:56:56,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7817 conditions, 1624 events. 374/1624 cut-off events. For 13641/13655 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 11654 event pairs, 164 based on Foata normal form. 4/1570 useless extension candidates. Maximal degree in co-relation 7691. Up to 392 conditions per place. [2021-11-02 22:56:56,660 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 152 selfloop transitions, 74 changer transitions 41/333 dead transitions. [2021-11-02 22:56:56,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 333 transitions, 4115 flow [2021-11-02 22:56:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:56:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-02 22:56:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2226 transitions. [2021-11-02 22:56:56,663 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5632591093117408 [2021-11-02 22:56:56,663 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2226 transitions. [2021-11-02 22:56:56,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2226 transitions. [2021-11-02 22:56:56,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:56,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2226 transitions. [2021-11-02 22:56:56,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.61538461538461) internal successors, (2226), 26 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:56,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:56,668 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:56,668 INFO L186 Difference]: Start difference. First operand has 346 places, 240 transitions, 2611 flow. Second operand 26 states and 2226 transitions. [2021-11-02 22:56:56,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 333 transitions, 4115 flow [2021-11-02 22:56:56,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 333 transitions, 3923 flow, removed 48 selfloop flow, removed 24 redundant places. [2021-11-02 22:56:56,753 INFO L242 Difference]: Finished difference. Result has 340 places, 246 transitions, 2802 flow [2021-11-02 22:56:56,753 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2802, PETRI_PLACES=340, PETRI_TRANSITIONS=246} [2021-11-02 22:56:56,753 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 204 predicate places. [2021-11-02 22:56:56,753 INFO L470 AbstractCegarLoop]: Abstraction has has 340 places, 246 transitions, 2802 flow [2021-11-02 22:56:56,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:56,753 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:56,754 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:56,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-02 22:56:56,754 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:56,754 INFO L85 PathProgramCache]: Analyzing trace with hash 341475830, now seen corresponding path program 17 times [2021-11-02 22:56:56,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:56,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979760306] [2021-11-02 22:56:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:56,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:57,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:57,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979760306] [2021-11-02 22:56:57,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979760306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:57,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:57,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:57,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312703970] [2021-11-02 22:56:57,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:57,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:57,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:57,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:57,065 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:57,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 246 transitions, 2802 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:57,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:57,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:57,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:56:58,609 INFO L129 PetriNetUnfolder]: 352/1570 cut-off events. [2021-11-02 22:56:58,609 INFO L130 PetriNetUnfolder]: For 12836/12847 co-relation queries the response was YES. [2021-11-02 22:56:58,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7376 conditions, 1570 events. 352/1570 cut-off events. For 12836/12847 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11114 event pairs, 152 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 7255. Up to 392 conditions per place. [2021-11-02 22:56:58,637 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 151 selfloop transitions, 64 changer transitions 45/326 dead transitions. [2021-11-02 22:56:58,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 326 transitions, 4018 flow [2021-11-02 22:56:58,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 22:56:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-02 22:56:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2386 transitions. [2021-11-02 22:56:58,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5606203007518797 [2021-11-02 22:56:58,640 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2386 transitions. [2021-11-02 22:56:58,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2386 transitions. [2021-11-02 22:56:58,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:56:58,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2386 transitions. [2021-11-02 22:56:58,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 85.21428571428571) internal successors, (2386), 28 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:58,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:58,646 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:58,646 INFO L186 Difference]: Start difference. First operand has 340 places, 246 transitions, 2802 flow. Second operand 28 states and 2386 transitions. [2021-11-02 22:56:58,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 326 transitions, 4018 flow [2021-11-02 22:56:58,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 326 transitions, 3764 flow, removed 37 selfloop flow, removed 19 redundant places. [2021-11-02 22:56:58,729 INFO L242 Difference]: Finished difference. Result has 351 places, 238 transitions, 2608 flow [2021-11-02 22:56:58,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2608, PETRI_PLACES=351, PETRI_TRANSITIONS=238} [2021-11-02 22:56:58,730 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 215 predicate places. [2021-11-02 22:56:58,730 INFO L470 AbstractCegarLoop]: Abstraction has has 351 places, 238 transitions, 2608 flow [2021-11-02 22:56:58,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:58,730 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:56:58,730 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:58,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-02 22:56:58,731 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:56:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:58,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1932090170, now seen corresponding path program 18 times [2021-11-02 22:56:58,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:58,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469376235] [2021-11-02 22:56:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:58,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:59,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:59,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469376235] [2021-11-02 22:56:59,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469376235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:59,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:59,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:56:59,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215186246] [2021-11-02 22:56:59,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:56:59,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:56:59,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:56:59,108 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:56:59,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 238 transitions, 2608 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:59,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:56:59,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:56:59,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:00,906 INFO L129 PetriNetUnfolder]: 322/1332 cut-off events. [2021-11-02 22:57:00,906 INFO L130 PetriNetUnfolder]: For 11182/11188 co-relation queries the response was YES. [2021-11-02 22:57:00,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6322 conditions, 1332 events. 322/1332 cut-off events. For 11182/11188 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8614 event pairs, 154 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 6195. Up to 392 conditions per place. [2021-11-02 22:57:00,930 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 131 selfloop transitions, 36 changer transitions 59/292 dead transitions. [2021-11-02 22:57:00,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 292 transitions, 3327 flow [2021-11-02 22:57:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:57:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-02 22:57:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2213 transitions. [2021-11-02 22:57:00,932 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5599696356275303 [2021-11-02 22:57:00,932 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2213 transitions. [2021-11-02 22:57:00,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2213 transitions. [2021-11-02 22:57:00,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:00,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2213 transitions. [2021-11-02 22:57:00,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.11538461538461) internal successors, (2213), 26 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:00,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:00,938 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:00,938 INFO L186 Difference]: Start difference. First operand has 351 places, 238 transitions, 2608 flow. Second operand 26 states and 2213 transitions. [2021-11-02 22:57:00,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 292 transitions, 3327 flow [2021-11-02 22:57:01,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 292 transitions, 3130 flow, removed 44 selfloop flow, removed 22 redundant places. [2021-11-02 22:57:01,018 INFO L242 Difference]: Finished difference. Result has 343 places, 196 transitions, 1831 flow [2021-11-02 22:57:01,018 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1831, PETRI_PLACES=343, PETRI_TRANSITIONS=196} [2021-11-02 22:57:01,019 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-02 22:57:01,019 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 196 transitions, 1831 flow [2021-11-02 22:57:01,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:01,019 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:01,019 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:01,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-02 22:57:01,020 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:01,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:01,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1537321896, now seen corresponding path program 19 times [2021-11-02 22:57:01,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:01,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884887870] [2021-11-02 22:57:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:01,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:01,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:01,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884887870] [2021-11-02 22:57:01,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884887870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:01,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:01,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:01,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222598788] [2021-11-02 22:57:01,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:01,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:01,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:01,362 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:01,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 196 transitions, 1831 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:01,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:01,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:01,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:03,301 INFO L129 PetriNetUnfolder]: 349/1541 cut-off events. [2021-11-02 22:57:03,301 INFO L130 PetriNetUnfolder]: For 13649/13666 co-relation queries the response was YES. [2021-11-02 22:57:03,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7144 conditions, 1541 events. 349/1541 cut-off events. For 13649/13666 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10955 event pairs, 158 based on Foata normal form. 4/1489 useless extension candidates. Maximal degree in co-relation 7026. Up to 392 conditions per place. [2021-11-02 22:57:03,322 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 174 selfloop transitions, 45 changer transitions 52/337 dead transitions. [2021-11-02 22:57:03,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 337 transitions, 3869 flow [2021-11-02 22:57:03,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-02 22:57:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-11-02 22:57:03,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2808 transitions. [2021-11-02 22:57:03,324 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5598086124401914 [2021-11-02 22:57:03,324 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2808 transitions. [2021-11-02 22:57:03,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2808 transitions. [2021-11-02 22:57:03,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:03,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2808 transitions. [2021-11-02 22:57:03,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 85.0909090909091) internal successors, (2808), 33 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:03,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:03,330 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:03,330 INFO L186 Difference]: Start difference. First operand has 343 places, 196 transitions, 1831 flow. Second operand 33 states and 2808 transitions. [2021-11-02 22:57:03,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 337 transitions, 3869 flow [2021-11-02 22:57:03,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 337 transitions, 3428 flow, removed 86 selfloop flow, removed 23 redundant places. [2021-11-02 22:57:03,398 INFO L242 Difference]: Finished difference. Result has 331 places, 203 transitions, 2009 flow [2021-11-02 22:57:03,398 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2009, PETRI_PLACES=331, PETRI_TRANSITIONS=203} [2021-11-02 22:57:03,398 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 195 predicate places. [2021-11-02 22:57:03,398 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 203 transitions, 2009 flow [2021-11-02 22:57:03,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:03,398 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:03,399 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:03,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-02 22:57:03,399 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:03,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:03,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1662897498, now seen corresponding path program 20 times [2021-11-02 22:57:03,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:03,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421535483] [2021-11-02 22:57:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:03,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:03,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:03,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421535483] [2021-11-02 22:57:03,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421535483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:03,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:03,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:03,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610253376] [2021-11-02 22:57:03,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:03,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:03,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:03,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:03,735 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:03,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 203 transitions, 2009 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:03,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:03,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:03,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:05,680 INFO L129 PetriNetUnfolder]: 363/1548 cut-off events. [2021-11-02 22:57:05,681 INFO L130 PetriNetUnfolder]: For 17208/17230 co-relation queries the response was YES. [2021-11-02 22:57:05,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 1548 events. 363/1548 cut-off events. For 17208/17230 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 10828 event pairs, 169 based on Foata normal form. 2/1489 useless extension candidates. Maximal degree in co-relation 7645. Up to 392 conditions per place. [2021-11-02 22:57:05,720 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 176 selfloop transitions, 51 changer transitions 49/342 dead transitions. [2021-11-02 22:57:05,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 342 transitions, 4185 flow [2021-11-02 22:57:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 22:57:05,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-11-02 22:57:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2737 transitions. [2021-11-02 22:57:05,725 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5627055921052632 [2021-11-02 22:57:05,725 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2737 transitions. [2021-11-02 22:57:05,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2737 transitions. [2021-11-02 22:57:05,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:05,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2737 transitions. [2021-11-02 22:57:05,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 85.53125) internal successors, (2737), 32 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:05,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:05,737 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:05,738 INFO L186 Difference]: Start difference. First operand has 331 places, 203 transitions, 2009 flow. Second operand 32 states and 2737 transitions. [2021-11-02 22:57:05,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 342 transitions, 4185 flow [2021-11-02 22:57:05,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 342 transitions, 3745 flow, removed 212 selfloop flow, removed 28 redundant places. [2021-11-02 22:57:05,839 INFO L242 Difference]: Finished difference. Result has 336 places, 211 transitions, 2300 flow [2021-11-02 22:57:05,840 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2300, PETRI_PLACES=336, PETRI_TRANSITIONS=211} [2021-11-02 22:57:05,840 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 200 predicate places. [2021-11-02 22:57:05,840 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 211 transitions, 2300 flow [2021-11-02 22:57:05,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:05,841 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:05,841 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:05,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-02 22:57:05,842 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:05,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1667961288, now seen corresponding path program 21 times [2021-11-02 22:57:05,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:05,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184743395] [2021-11-02 22:57:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:05,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:06,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:06,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184743395] [2021-11-02 22:57:06,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184743395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:06,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:06,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:06,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427951483] [2021-11-02 22:57:06,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:06,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:06,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:06,129 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:06,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 211 transitions, 2300 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:06,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:06,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:06,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:08,022 INFO L129 PetriNetUnfolder]: 343/1472 cut-off events. [2021-11-02 22:57:08,022 INFO L130 PetriNetUnfolder]: For 15103/15125 co-relation queries the response was YES. [2021-11-02 22:57:08,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7183 conditions, 1472 events. 343/1472 cut-off events. For 15103/15125 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10145 event pairs, 152 based on Foata normal form. 5/1419 useless extension candidates. Maximal degree in co-relation 7052. Up to 392 conditions per place. [2021-11-02 22:57:08,049 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 175 selfloop transitions, 45 changer transitions 57/343 dead transitions. [2021-11-02 22:57:08,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 343 transitions, 4129 flow [2021-11-02 22:57:08,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-02 22:57:08,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-11-02 22:57:08,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2820 transitions. [2021-11-02 22:57:08,054 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.562200956937799 [2021-11-02 22:57:08,054 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2820 transitions. [2021-11-02 22:57:08,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2820 transitions. [2021-11-02 22:57:08,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:08,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2820 transitions. [2021-11-02 22:57:08,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 85.45454545454545) internal successors, (2820), 33 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:08,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:08,061 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:08,061 INFO L186 Difference]: Start difference. First operand has 336 places, 211 transitions, 2300 flow. Second operand 33 states and 2820 transitions. [2021-11-02 22:57:08,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 343 transitions, 4129 flow [2021-11-02 22:57:08,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 343 transitions, 3671 flow, removed 182 selfloop flow, removed 26 redundant places. [2021-11-02 22:57:08,141 INFO L242 Difference]: Finished difference. Result has 345 places, 205 transitions, 2127 flow [2021-11-02 22:57:08,141 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2127, PETRI_PLACES=345, PETRI_TRANSITIONS=205} [2021-11-02 22:57:08,141 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 209 predicate places. [2021-11-02 22:57:08,141 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 205 transitions, 2127 flow [2021-11-02 22:57:08,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:08,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:08,142 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:08,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-02 22:57:08,142 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:08,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1593581730, now seen corresponding path program 22 times [2021-11-02 22:57:08,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:08,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173881648] [2021-11-02 22:57:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:08,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:08,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:08,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173881648] [2021-11-02 22:57:08,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173881648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:08,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:08,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:08,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919955954] [2021-11-02 22:57:08,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:08,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:08,501 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:08,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 205 transitions, 2127 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:08,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:08,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:08,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:10,154 INFO L129 PetriNetUnfolder]: 332/1390 cut-off events. [2021-11-02 22:57:10,154 INFO L130 PetriNetUnfolder]: For 13483/13491 co-relation queries the response was YES. [2021-11-02 22:57:10,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6716 conditions, 1390 events. 332/1390 cut-off events. For 13483/13491 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9212 event pairs, 149 based on Foata normal form. 1/1332 useless extension candidates. Maximal degree in co-relation 6582. Up to 392 conditions per place. [2021-11-02 22:57:10,190 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 142 selfloop transitions, 63 changer transitions 30/301 dead transitions. [2021-11-02 22:57:10,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 301 transitions, 3740 flow [2021-11-02 22:57:10,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:57:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-02 22:57:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2062 transitions. [2021-11-02 22:57:10,194 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5652412280701754 [2021-11-02 22:57:10,194 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2062 transitions. [2021-11-02 22:57:10,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2062 transitions. [2021-11-02 22:57:10,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:10,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2062 transitions. [2021-11-02 22:57:10,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 85.91666666666667) internal successors, (2062), 24 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:10,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:10,203 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:10,203 INFO L186 Difference]: Start difference. First operand has 345 places, 205 transitions, 2127 flow. Second operand 24 states and 2062 transitions. [2021-11-02 22:57:10,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 301 transitions, 3740 flow [2021-11-02 22:57:10,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 301 transitions, 3235 flow, removed 85 selfloop flow, removed 37 redundant places. [2021-11-02 22:57:10,296 INFO L242 Difference]: Finished difference. Result has 322 places, 224 transitions, 2393 flow [2021-11-02 22:57:10,296 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2393, PETRI_PLACES=322, PETRI_TRANSITIONS=224} [2021-11-02 22:57:10,297 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 186 predicate places. [2021-11-02 22:57:10,297 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 224 transitions, 2393 flow [2021-11-02 22:57:10,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:10,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:10,297 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:10,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-02 22:57:10,297 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:10,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:10,298 INFO L85 PathProgramCache]: Analyzing trace with hash -344187704, now seen corresponding path program 23 times [2021-11-02 22:57:10,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:10,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640180150] [2021-11-02 22:57:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:10,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:10,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:10,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640180150] [2021-11-02 22:57:10,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640180150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:10,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:10,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:10,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546534846] [2021-11-02 22:57:10,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:10,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:10,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:10,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:10,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:10,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 224 transitions, 2393 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:10,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:10,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:10,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:12,349 INFO L129 PetriNetUnfolder]: 335/1398 cut-off events. [2021-11-02 22:57:12,350 INFO L130 PetriNetUnfolder]: For 11775/11798 co-relation queries the response was YES. [2021-11-02 22:57:12,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6636 conditions, 1398 events. 335/1398 cut-off events. For 11775/11798 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9341 event pairs, 156 based on Foata normal form. 3/1342 useless extension candidates. Maximal degree in co-relation 6515. Up to 392 conditions per place. [2021-11-02 22:57:12,378 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 173 selfloop transitions, 54 changer transitions 42/335 dead transitions. [2021-11-02 22:57:12,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 335 transitions, 3953 flow [2021-11-02 22:57:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:57:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-02 22:57:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2647 transitions. [2021-11-02 22:57:12,381 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5617572156196944 [2021-11-02 22:57:12,381 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2647 transitions. [2021-11-02 22:57:12,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2647 transitions. [2021-11-02 22:57:12,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:12,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2647 transitions. [2021-11-02 22:57:12,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 85.38709677419355) internal successors, (2647), 31 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:12,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:12,388 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:12,388 INFO L186 Difference]: Start difference. First operand has 322 places, 224 transitions, 2393 flow. Second operand 31 states and 2647 transitions. [2021-11-02 22:57:12,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 335 transitions, 3953 flow [2021-11-02 22:57:12,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 335 transitions, 3420 flow, removed 180 selfloop flow, removed 16 redundant places. [2021-11-02 22:57:12,464 INFO L242 Difference]: Finished difference. Result has 348 places, 223 transitions, 2231 flow [2021-11-02 22:57:12,464 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2231, PETRI_PLACES=348, PETRI_TRANSITIONS=223} [2021-11-02 22:57:12,465 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 212 predicate places. [2021-11-02 22:57:12,465 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 223 transitions, 2231 flow [2021-11-02 22:57:12,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:12,465 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:12,466 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:12,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-02 22:57:12,466 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1754693240, now seen corresponding path program 24 times [2021-11-02 22:57:12,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:12,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641353689] [2021-11-02 22:57:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:12,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:12,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:12,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641353689] [2021-11-02 22:57:12,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641353689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:12,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:12,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:12,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305546431] [2021-11-02 22:57:12,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:12,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:12,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:12,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:12,750 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:12,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 223 transitions, 2231 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:12,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:12,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:12,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:14,357 INFO L129 PetriNetUnfolder]: 329/1340 cut-off events. [2021-11-02 22:57:14,357 INFO L130 PetriNetUnfolder]: For 10574/10582 co-relation queries the response was YES. [2021-11-02 22:57:14,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 1340 events. 329/1340 cut-off events. For 10574/10582 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8824 event pairs, 162 based on Foata normal form. 2/1287 useless extension candidates. Maximal degree in co-relation 6255. Up to 392 conditions per place. [2021-11-02 22:57:14,383 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 154 selfloop transitions, 57 changer transitions 39/316 dead transitions. [2021-11-02 22:57:14,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 316 transitions, 3591 flow [2021-11-02 22:57:14,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:57:14,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-02 22:57:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2550 transitions. [2021-11-02 22:57:14,385 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2021-11-02 22:57:14,385 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2550 transitions. [2021-11-02 22:57:14,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2550 transitions. [2021-11-02 22:57:14,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:14,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2550 transitions. [2021-11-02 22:57:14,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 85.0) internal successors, (2550), 30 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:14,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:14,392 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:14,392 INFO L186 Difference]: Start difference. First operand has 348 places, 223 transitions, 2231 flow. Second operand 30 states and 2550 transitions. [2021-11-02 22:57:14,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 316 transitions, 3591 flow [2021-11-02 22:57:14,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 316 transitions, 3306 flow, removed 67 selfloop flow, removed 30 redundant places. [2021-11-02 22:57:14,472 INFO L242 Difference]: Finished difference. Result has 346 places, 225 transitions, 2260 flow [2021-11-02 22:57:14,472 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2260, PETRI_PLACES=346, PETRI_TRANSITIONS=225} [2021-11-02 22:57:14,472 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 210 predicate places. [2021-11-02 22:57:14,472 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 225 transitions, 2260 flow [2021-11-02 22:57:14,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:14,473 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:14,473 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:14,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-02 22:57:14,473 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:14,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:14,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1738169844, now seen corresponding path program 25 times [2021-11-02 22:57:14,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:14,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762354474] [2021-11-02 22:57:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:14,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:14,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:14,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:14,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762354474] [2021-11-02 22:57:14,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762354474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:14,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:14,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:14,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584277420] [2021-11-02 22:57:14,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:14,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:14,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:14,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:14,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:14,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 225 transitions, 2260 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:14,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:14,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:14,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:16,720 INFO L129 PetriNetUnfolder]: 328/1350 cut-off events. [2021-11-02 22:57:16,720 INFO L130 PetriNetUnfolder]: For 10774/10788 co-relation queries the response was YES. [2021-11-02 22:57:16,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6401 conditions, 1350 events. 328/1350 cut-off events. For 10774/10788 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8835 event pairs, 155 based on Foata normal form. 3/1299 useless extension candidates. Maximal degree in co-relation 6270. Up to 392 conditions per place. [2021-11-02 22:57:16,753 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 143 selfloop transitions, 62 changer transitions 32/303 dead transitions. [2021-11-02 22:57:16,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 303 transitions, 3422 flow [2021-11-02 22:57:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:57:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-02 22:57:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2221 transitions. [2021-11-02 22:57:16,755 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5619939271255061 [2021-11-02 22:57:16,755 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2221 transitions. [2021-11-02 22:57:16,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2221 transitions. [2021-11-02 22:57:16,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:16,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2221 transitions. [2021-11-02 22:57:16,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.42307692307692) internal successors, (2221), 26 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:16,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:16,760 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:16,760 INFO L186 Difference]: Start difference. First operand has 346 places, 225 transitions, 2260 flow. Second operand 26 states and 2221 transitions. [2021-11-02 22:57:16,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 303 transitions, 3422 flow [2021-11-02 22:57:16,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 303 transitions, 3238 flow, removed 46 selfloop flow, removed 24 redundant places. [2021-11-02 22:57:16,839 INFO L242 Difference]: Finished difference. Result has 340 places, 229 transitions, 2369 flow [2021-11-02 22:57:16,839 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2369, PETRI_PLACES=340, PETRI_TRANSITIONS=229} [2021-11-02 22:57:16,839 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 204 predicate places. [2021-11-02 22:57:16,840 INFO L470 AbstractCegarLoop]: Abstraction has has 340 places, 229 transitions, 2369 flow [2021-11-02 22:57:16,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:16,840 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:16,840 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:16,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-02 22:57:16,840 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:16,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:16,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1656356514, now seen corresponding path program 26 times [2021-11-02 22:57:16,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:16,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191802447] [2021-11-02 22:57:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:16,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:17,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:17,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191802447] [2021-11-02 22:57:17,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191802447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:17,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:17,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:17,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98073608] [2021-11-02 22:57:17,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:17,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:17,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:17,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:17,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:17,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 229 transitions, 2369 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:17,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:17,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:17,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:18,774 INFO L129 PetriNetUnfolder]: 317/1313 cut-off events. [2021-11-02 22:57:18,774 INFO L130 PetriNetUnfolder]: For 10400/10411 co-relation queries the response was YES. [2021-11-02 22:57:18,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6136 conditions, 1313 events. 317/1313 cut-off events. For 10400/10411 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8573 event pairs, 155 based on Foata normal form. 3/1263 useless extension candidates. Maximal degree in co-relation 6010. Up to 392 conditions per place. [2021-11-02 22:57:18,799 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 144 selfloop transitions, 56 changer transitions 35/301 dead transitions. [2021-11-02 22:57:18,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 301 transitions, 3408 flow [2021-11-02 22:57:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 22:57:18,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-02 22:57:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2381 transitions. [2021-11-02 22:57:18,801 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5594454887218046 [2021-11-02 22:57:18,801 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2381 transitions. [2021-11-02 22:57:18,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2381 transitions. [2021-11-02 22:57:18,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:18,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2381 transitions. [2021-11-02 22:57:18,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 85.03571428571429) internal successors, (2381), 28 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:18,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:18,809 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 152.0) internal successors, (4408), 29 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:18,809 INFO L186 Difference]: Start difference. First operand has 340 places, 229 transitions, 2369 flow. Second operand 28 states and 2381 transitions. [2021-11-02 22:57:18,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 301 transitions, 3408 flow [2021-11-02 22:57:18,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 301 transitions, 3198 flow, removed 34 selfloop flow, removed 19 redundant places. [2021-11-02 22:57:18,882 INFO L242 Difference]: Finished difference. Result has 351 places, 226 transitions, 2297 flow [2021-11-02 22:57:18,882 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2208, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2297, PETRI_PLACES=351, PETRI_TRANSITIONS=226} [2021-11-02 22:57:18,882 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 215 predicate places. [2021-11-02 22:57:18,882 INFO L470 AbstractCegarLoop]: Abstraction has has 351 places, 226 transitions, 2297 flow [2021-11-02 22:57:18,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:18,882 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:18,883 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:18,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-02 22:57:18,883 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:18,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash -440341756, now seen corresponding path program 27 times [2021-11-02 22:57:18,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:18,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205953546] [2021-11-02 22:57:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:18,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:19,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:19,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205953546] [2021-11-02 22:57:19,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205953546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:19,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:19,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:19,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206792348] [2021-11-02 22:57:19,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:19,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:19,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:19,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:19,215 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:19,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 226 transitions, 2297 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:19,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:19,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:19,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:20,880 INFO L129 PetriNetUnfolder]: 302/1203 cut-off events. [2021-11-02 22:57:20,880 INFO L130 PetriNetUnfolder]: For 9459/9465 co-relation queries the response was YES. [2021-11-02 22:57:20,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5666 conditions, 1203 events. 302/1203 cut-off events. For 9459/9465 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7472 event pairs, 153 based on Foata normal form. 1/1152 useless extension candidates. Maximal degree in co-relation 5534. Up to 392 conditions per place. [2021-11-02 22:57:20,903 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 127 selfloop transitions, 37 changer transitions 47/277 dead transitions. [2021-11-02 22:57:20,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 277 transitions, 2974 flow [2021-11-02 22:57:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:57:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-02 22:57:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2208 transitions. [2021-11-02 22:57:20,906 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5587044534412956 [2021-11-02 22:57:20,906 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2208 transitions. [2021-11-02 22:57:20,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2208 transitions. [2021-11-02 22:57:20,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:20,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2208 transitions. [2021-11-02 22:57:20,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 84.92307692307692) internal successors, (2208), 26 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:20,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:20,911 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:20,911 INFO L186 Difference]: Start difference. First operand has 351 places, 226 transitions, 2297 flow. Second operand 26 states and 2208 transitions. [2021-11-02 22:57:20,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 277 transitions, 2974 flow [2021-11-02 22:57:20,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 277 transitions, 2801 flow, removed 36 selfloop flow, removed 22 redundant places. [2021-11-02 22:57:20,989 INFO L242 Difference]: Finished difference. Result has 343 places, 196 transitions, 1792 flow [2021-11-02 22:57:20,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1792, PETRI_PLACES=343, PETRI_TRANSITIONS=196} [2021-11-02 22:57:20,990 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-02 22:57:20,990 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 196 transitions, 1792 flow [2021-11-02 22:57:20,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:20,990 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:20,991 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:20,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-02 22:57:20,991 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:20,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:20,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1468081226, now seen corresponding path program 28 times [2021-11-02 22:57:20,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:20,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963418536] [2021-11-02 22:57:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:20,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:21,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:21,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:21,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963418536] [2021-11-02 22:57:21,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963418536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:21,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:21,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:21,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146345639] [2021-11-02 22:57:21,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:21,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:21,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:21,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:21,342 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:21,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 196 transitions, 1792 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:21,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:21,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:21,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:23,202 INFO L129 PetriNetUnfolder]: 328/1377 cut-off events. [2021-11-02 22:57:23,202 INFO L130 PetriNetUnfolder]: For 11389/11406 co-relation queries the response was YES. [2021-11-02 22:57:23,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6545 conditions, 1377 events. 328/1377 cut-off events. For 11389/11406 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9311 event pairs, 164 based on Foata normal form. 2/1324 useless extension candidates. Maximal degree in co-relation 6422. Up to 392 conditions per place. [2021-11-02 22:57:23,227 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 169 selfloop transitions, 40 changer transitions 44/319 dead transitions. [2021-11-02 22:57:23,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 319 transitions, 3700 flow [2021-11-02 22:57:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:57:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-02 22:57:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2631 transitions. [2021-11-02 22:57:23,230 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5583616298811545 [2021-11-02 22:57:23,230 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2631 transitions. [2021-11-02 22:57:23,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2631 transitions. [2021-11-02 22:57:23,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:23,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2631 transitions. [2021-11-02 22:57:23,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 84.87096774193549) internal successors, (2631), 31 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:23,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:23,237 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:23,237 INFO L186 Difference]: Start difference. First operand has 343 places, 196 transitions, 1792 flow. Second operand 31 states and 2631 transitions. [2021-11-02 22:57:23,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 319 transitions, 3700 flow [2021-11-02 22:57:23,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 319 transitions, 3369 flow, removed 77 selfloop flow, removed 22 redundant places. [2021-11-02 22:57:23,305 INFO L242 Difference]: Finished difference. Result has 332 places, 203 transitions, 2012 flow [2021-11-02 22:57:23,305 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2012, PETRI_PLACES=332, PETRI_TRANSITIONS=203} [2021-11-02 22:57:23,305 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 196 predicate places. [2021-11-02 22:57:23,306 INFO L470 AbstractCegarLoop]: Abstraction has has 332 places, 203 transitions, 2012 flow [2021-11-02 22:57:23,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:23,306 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:23,307 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:23,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-02 22:57:23,307 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:23,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:23,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1579297304, now seen corresponding path program 29 times [2021-11-02 22:57:23,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:23,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652850110] [2021-11-02 22:57:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:23,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:23,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:23,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652850110] [2021-11-02 22:57:23,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652850110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:23,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:23,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:23,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723305456] [2021-11-02 22:57:23,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:23,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:23,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:23,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:23,674 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:23,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 203 transitions, 2012 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:23,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:23,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:23,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:25,634 INFO L129 PetriNetUnfolder]: 327/1368 cut-off events. [2021-11-02 22:57:25,634 INFO L130 PetriNetUnfolder]: For 12333/12347 co-relation queries the response was YES. [2021-11-02 22:57:25,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6621 conditions, 1368 events. 327/1368 cut-off events. For 12333/12347 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9163 event pairs, 148 based on Foata normal form. 2/1320 useless extension candidates. Maximal degree in co-relation 6490. Up to 392 conditions per place. [2021-11-02 22:57:25,658 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 170 selfloop transitions, 46 changer transitions 49/331 dead transitions. [2021-11-02 22:57:25,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 331 transitions, 3838 flow [2021-11-02 22:57:25,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 22:57:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-11-02 22:57:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2730 transitions. [2021-11-02 22:57:25,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.561266447368421 [2021-11-02 22:57:25,661 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2730 transitions. [2021-11-02 22:57:25,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2730 transitions. [2021-11-02 22:57:25,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:25,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2730 transitions. [2021-11-02 22:57:25,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 85.3125) internal successors, (2730), 32 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:25,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:25,667 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:25,667 INFO L186 Difference]: Start difference. First operand has 332 places, 203 transitions, 2012 flow. Second operand 32 states and 2730 transitions. [2021-11-02 22:57:25,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 331 transitions, 3838 flow [2021-11-02 22:57:25,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 331 transitions, 3591 flow, removed 111 selfloop flow, removed 25 redundant places. [2021-11-02 22:57:25,741 INFO L242 Difference]: Finished difference. Result has 342 places, 204 transitions, 2131 flow [2021-11-02 22:57:25,741 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2131, PETRI_PLACES=342, PETRI_TRANSITIONS=204} [2021-11-02 22:57:25,742 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 206 predicate places. [2021-11-02 22:57:25,742 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 204 transitions, 2131 flow [2021-11-02 22:57:25,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:25,742 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:25,742 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:25,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-02 22:57:25,742 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:25,743 INFO L85 PathProgramCache]: Analyzing trace with hash -503897618, now seen corresponding path program 30 times [2021-11-02 22:57:25,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:25,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471546136] [2021-11-02 22:57:25,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:25,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:26,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:26,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471546136] [2021-11-02 22:57:26,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471546136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:26,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:26,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:26,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391776565] [2021-11-02 22:57:26,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:26,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:26,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:26,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 204 transitions, 2131 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:26,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:26,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:26,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:27,447 INFO L129 PetriNetUnfolder]: 321/1300 cut-off events. [2021-11-02 22:57:27,448 INFO L130 PetriNetUnfolder]: For 12743/12754 co-relation queries the response was YES. [2021-11-02 22:57:27,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6486 conditions, 1300 events. 321/1300 cut-off events. For 12743/12754 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8413 event pairs, 158 based on Foata normal form. 1/1249 useless extension candidates. Maximal degree in co-relation 6350. Up to 392 conditions per place. [2021-11-02 22:57:27,473 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 138 selfloop transitions, 63 changer transitions 30/297 dead transitions. [2021-11-02 22:57:27,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 297 transitions, 3782 flow [2021-11-02 22:57:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:57:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-02 22:57:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2058 transitions. [2021-11-02 22:57:27,475 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5641447368421053 [2021-11-02 22:57:27,475 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2058 transitions. [2021-11-02 22:57:27,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2058 transitions. [2021-11-02 22:57:27,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:27,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2058 transitions. [2021-11-02 22:57:27,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 85.75) internal successors, (2058), 24 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:27,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:27,480 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:27,480 INFO L186 Difference]: Start difference. First operand has 342 places, 204 transitions, 2131 flow. Second operand 24 states and 2058 transitions. [2021-11-02 22:57:27,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 297 transitions, 3782 flow [2021-11-02 22:57:27,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 297 transitions, 3230 flow, removed 154 selfloop flow, removed 31 redundant places. [2021-11-02 22:57:27,556 INFO L242 Difference]: Finished difference. Result has 327 places, 223 transitions, 2406 flow [2021-11-02 22:57:27,556 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2406, PETRI_PLACES=327, PETRI_TRANSITIONS=223} [2021-11-02 22:57:27,556 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 191 predicate places. [2021-11-02 22:57:27,556 INFO L470 AbstractCegarLoop]: Abstraction has has 327 places, 223 transitions, 2406 flow [2021-11-02 22:57:27,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:27,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:27,557 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:27,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-02 22:57:27,557 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:27,557 INFO L85 PathProgramCache]: Analyzing trace with hash 41556406, now seen corresponding path program 31 times [2021-11-02 22:57:27,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:27,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693972571] [2021-11-02 22:57:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:27,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:27,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:27,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693972571] [2021-11-02 22:57:27,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693972571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:27,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:27,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:27,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533265241] [2021-11-02 22:57:27,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:27,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:27,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:27,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:27,882 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:27,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 223 transitions, 2406 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:27,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:27,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:27,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:29,602 INFO L129 PetriNetUnfolder]: 324/1328 cut-off events. [2021-11-02 22:57:29,603 INFO L130 PetriNetUnfolder]: For 10825/10852 co-relation queries the response was YES. [2021-11-02 22:57:29,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 1328 events. 324/1328 cut-off events. For 10825/10852 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8682 event pairs, 152 based on Foata normal form. 2/1279 useless extension candidates. Maximal degree in co-relation 6279. Up to 392 conditions per place. [2021-11-02 22:57:29,626 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 169 selfloop transitions, 54 changer transitions 42/331 dead transitions. [2021-11-02 22:57:29,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 331 transitions, 3964 flow [2021-11-02 22:57:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:57:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-02 22:57:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2643 transitions. [2021-11-02 22:57:29,629 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5609083191850595 [2021-11-02 22:57:29,629 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2643 transitions. [2021-11-02 22:57:29,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2643 transitions. [2021-11-02 22:57:29,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:29,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2643 transitions. [2021-11-02 22:57:29,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 85.25806451612904) internal successors, (2643), 31 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:29,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:29,635 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:29,635 INFO L186 Difference]: Start difference. First operand has 327 places, 223 transitions, 2406 flow. Second operand 31 states and 2643 transitions. [2021-11-02 22:57:29,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 331 transitions, 3964 flow [2021-11-02 22:57:29,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 331 transitions, 3417 flow, removed 187 selfloop flow, removed 16 redundant places. [2021-11-02 22:57:29,710 INFO L242 Difference]: Finished difference. Result has 353 places, 222 transitions, 2238 flow [2021-11-02 22:57:29,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2238, PETRI_PLACES=353, PETRI_TRANSITIONS=222} [2021-11-02 22:57:29,711 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 217 predicate places. [2021-11-02 22:57:29,711 INFO L470 AbstractCegarLoop]: Abstraction has has 353 places, 222 transitions, 2238 flow [2021-11-02 22:57:29,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:29,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:29,712 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:29,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-02 22:57:29,712 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:29,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1368949130, now seen corresponding path program 32 times [2021-11-02 22:57:29,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:29,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885817641] [2021-11-02 22:57:29,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:29,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:30,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:30,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885817641] [2021-11-02 22:57:30,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885817641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:30,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:30,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:30,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632787130] [2021-11-02 22:57:30,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:30,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:30,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:30,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:30,005 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:30,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 222 transitions, 2238 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:30,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:30,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:30,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:31,784 INFO L129 PetriNetUnfolder]: 318/1298 cut-off events. [2021-11-02 22:57:31,784 INFO L130 PetriNetUnfolder]: For 9949/9965 co-relation queries the response was YES. [2021-11-02 22:57:31,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6216 conditions, 1298 events. 318/1298 cut-off events. For 9949/9965 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8521 event pairs, 158 based on Foata normal form. 2/1253 useless extension candidates. Maximal degree in co-relation 6077. Up to 392 conditions per place. [2021-11-02 22:57:31,805 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 150 selfloop transitions, 57 changer transitions 39/312 dead transitions. [2021-11-02 22:57:31,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 312 transitions, 3582 flow [2021-11-02 22:57:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:57:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-02 22:57:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2546 transitions. [2021-11-02 22:57:31,807 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2021-11-02 22:57:31,807 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2546 transitions. [2021-11-02 22:57:31,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2546 transitions. [2021-11-02 22:57:31,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:31,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2546 transitions. [2021-11-02 22:57:31,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 84.86666666666666) internal successors, (2546), 30 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:31,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:31,813 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:31,814 INFO L186 Difference]: Start difference. First operand has 353 places, 222 transitions, 2238 flow. Second operand 30 states and 2546 transitions. [2021-11-02 22:57:31,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 312 transitions, 3582 flow [2021-11-02 22:57:31,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 312 transitions, 3287 flow, removed 72 selfloop flow, removed 32 redundant places. [2021-11-02 22:57:31,887 INFO L242 Difference]: Finished difference. Result has 349 places, 224 transitions, 2263 flow [2021-11-02 22:57:31,888 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2263, PETRI_PLACES=349, PETRI_TRANSITIONS=224} [2021-11-02 22:57:31,888 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 213 predicate places. [2021-11-02 22:57:31,888 INFO L470 AbstractCegarLoop]: Abstraction has has 349 places, 224 transitions, 2263 flow [2021-11-02 22:57:31,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:31,888 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:31,889 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:31,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-02 22:57:31,889 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:31,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash 55454270, now seen corresponding path program 33 times [2021-11-02 22:57:31,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:31,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144558917] [2021-11-02 22:57:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:31,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:32,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:32,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144558917] [2021-11-02 22:57:32,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144558917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:32,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:32,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 22:57:32,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685331239] [2021-11-02 22:57:32,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:57:32,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:32,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:57:32,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:57:32,236 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2021-11-02 22:57:32,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 224 transitions, 2263 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:32,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:32,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2021-11-02 22:57:32,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:33,866 INFO L129 PetriNetUnfolder]: 317/1286 cut-off events. [2021-11-02 22:57:33,866 INFO L130 PetriNetUnfolder]: For 9796/9808 co-relation queries the response was YES. [2021-11-02 22:57:33,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 1286 events. 317/1286 cut-off events. For 9796/9808 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8304 event pairs, 153 based on Foata normal form. 2/1240 useless extension candidates. Maximal degree in co-relation 6035. Up to 392 conditions per place. [2021-11-02 22:57:33,888 INFO L132 encePairwiseOnDemand]: 128/152 looper letters, 139 selfloop transitions, 62 changer transitions 32/299 dead transitions. [2021-11-02 22:57:33,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 299 transitions, 3403 flow [2021-11-02 22:57:33,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:57:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-02 22:57:33,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2217 transitions. [2021-11-02 22:57:33,891 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5609817813765182 [2021-11-02 22:57:33,891 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2217 transitions. [2021-11-02 22:57:33,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2217 transitions. [2021-11-02 22:57:33,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:33,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2217 transitions. [2021-11-02 22:57:33,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 85.26923076923077) internal successors, (2217), 26 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:33,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:33,896 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:33,896 INFO L186 Difference]: Start difference. First operand has 349 places, 224 transitions, 2263 flow. Second operand 26 states and 2217 transitions. [2021-11-02 22:57:33,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 299 transitions, 3403 flow [2021-11-02 22:57:33,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 299 transitions, 3219 flow, removed 46 selfloop flow, removed 24 redundant places. [2021-11-02 22:57:33,965 INFO L242 Difference]: Finished difference. Result has 343 places, 228 transitions, 2372 flow [2021-11-02 22:57:33,965 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2135, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2372, PETRI_PLACES=343, PETRI_TRANSITIONS=228} [2021-11-02 22:57:33,965 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 207 predicate places. [2021-11-02 22:57:33,965 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 228 transitions, 2372 flow [2021-11-02 22:57:33,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:33,966 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:33,966 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:33,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-02 22:57:33,966 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:33,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:33,967 INFO L85 PathProgramCache]: Analyzing trace with hash -317218292, now seen corresponding path program 34 times [2021-11-02 22:57:33,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:33,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133053633] [2021-11-02 22:57:33,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:33,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:34,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:34,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133053633] [2021-11-02 22:57:34,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133053633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:34,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:34,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:57:34,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007074037] [2021-11-02 22:57:34,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:57:34,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:34,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:57:34,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:57:34,039 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 152 [2021-11-02 22:57:34,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 228 transitions, 2372 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:34,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:34,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 152 [2021-11-02 22:57:34,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:34,203 INFO L129 PetriNetUnfolder]: 38/359 cut-off events. [2021-11-02 22:57:34,204 INFO L130 PetriNetUnfolder]: For 911/925 co-relation queries the response was YES. [2021-11-02 22:57:34,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 359 events. 38/359 cut-off events. For 911/925 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1367 event pairs, 25 based on Foata normal form. 4/348 useless extension candidates. Maximal degree in co-relation 971. Up to 38 conditions per place. [2021-11-02 22:57:34,212 INFO L132 encePairwiseOnDemand]: 147/152 looper letters, 22 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2021-11-02 22:57:34,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 129 transitions, 567 flow [2021-11-02 22:57:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:57:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-02 22:57:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2021-11-02 22:57:34,213 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8421052631578947 [2021-11-02 22:57:34,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2021-11-02 22:57:34,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2021-11-02 22:57:34,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:34,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2021-11-02 22:57:34,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:34,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:34,216 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:34,216 INFO L186 Difference]: Start difference. First operand has 343 places, 228 transitions, 2372 flow. Second operand 4 states and 512 transitions. [2021-11-02 22:57:34,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 129 transitions, 567 flow [2021-11-02 22:57:34,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 129 transitions, 482 flow, removed 21 selfloop flow, removed 22 redundant places. [2021-11-02 22:57:34,228 INFO L242 Difference]: Finished difference. Result has 242 places, 126 transitions, 419 flow [2021-11-02 22:57:34,228 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=419, PETRI_PLACES=242, PETRI_TRANSITIONS=126} [2021-11-02 22:57:34,229 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 106 predicate places. [2021-11-02 22:57:34,229 INFO L470 AbstractCegarLoop]: Abstraction has has 242 places, 126 transitions, 419 flow [2021-11-02 22:57:34,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:34,229 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:34,229 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:34,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-02 22:57:34,230 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:34,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1696237337, now seen corresponding path program 1 times [2021-11-02 22:57:34,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:34,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222334903] [2021-11-02 22:57:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:34,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:35,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:35,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222334903] [2021-11-02 22:57:35,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222334903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:35,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:35,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 22:57:35,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903154599] [2021-11-02 22:57:35,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:57:35,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:35,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:57:35,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:57:35,147 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-02 22:57:35,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 126 transitions, 419 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:35,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:35,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-02 22:57:35,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:42,081 INFO L129 PetriNetUnfolder]: 864/2472 cut-off events. [2021-11-02 22:57:42,081 INFO L130 PetriNetUnfolder]: For 4884/4884 co-relation queries the response was YES. [2021-11-02 22:57:42,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7093 conditions, 2472 events. 864/2472 cut-off events. For 4884/4884 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 16161 event pairs, 0 based on Foata normal form. 1/2420 useless extension candidates. Maximal degree in co-relation 6979. Up to 804 conditions per place. [2021-11-02 22:57:42,115 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 286 selfloop transitions, 45 changer transitions 55/438 dead transitions. [2021-11-02 22:57:42,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 438 transitions, 3011 flow [2021-11-02 22:57:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-02 22:57:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-11-02 22:57:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3599 transitions. [2021-11-02 22:57:42,119 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4642672858617131 [2021-11-02 22:57:42,120 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3599 transitions. [2021-11-02 22:57:42,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3599 transitions. [2021-11-02 22:57:42,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:42,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3599 transitions. [2021-11-02 22:57:42,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 70.56862745098039) internal successors, (3599), 51 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:42,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 152.0) internal successors, (7904), 52 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:42,131 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 152.0) internal successors, (7904), 52 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:42,132 INFO L186 Difference]: Start difference. First operand has 242 places, 126 transitions, 419 flow. Second operand 51 states and 3599 transitions. [2021-11-02 22:57:42,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 438 transitions, 3011 flow [2021-11-02 22:57:42,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 438 transitions, 3002 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-02 22:57:42,148 INFO L242 Difference]: Finished difference. Result has 335 places, 165 transitions, 1011 flow [2021-11-02 22:57:42,148 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1011, PETRI_PLACES=335, PETRI_TRANSITIONS=165} [2021-11-02 22:57:42,148 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 199 predicate places. [2021-11-02 22:57:42,148 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 165 transitions, 1011 flow [2021-11-02 22:57:42,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:42,149 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:42,149 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:42,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-02 22:57:42,150 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:42,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:42,150 INFO L85 PathProgramCache]: Analyzing trace with hash 424549617, now seen corresponding path program 2 times [2021-11-02 22:57:42,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:42,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281541087] [2021-11-02 22:57:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:42,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:43,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:43,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281541087] [2021-11-02 22:57:43,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281541087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:43,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:43,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 22:57:43,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519620937] [2021-11-02 22:57:43,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:57:43,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:57:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:57:43,191 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-02 22:57:43,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 165 transitions, 1011 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:43,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:43,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-02 22:57:43,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:57:55,181 INFO L129 PetriNetUnfolder]: 1212/3436 cut-off events. [2021-11-02 22:57:55,181 INFO L130 PetriNetUnfolder]: For 30067/30067 co-relation queries the response was YES. [2021-11-02 22:57:55,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14431 conditions, 3436 events. 1212/3436 cut-off events. For 30067/30067 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 24947 event pairs, 72 based on Foata normal form. 1/3345 useless extension candidates. Maximal degree in co-relation 14272. Up to 852 conditions per place. [2021-11-02 22:57:55,281 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 388 selfloop transitions, 42 changer transitions 155/637 dead transitions. [2021-11-02 22:57:55,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 637 transitions, 6455 flow [2021-11-02 22:57:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-02 22:57:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-11-02 22:57:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 6063 transitions. [2021-11-02 22:57:55,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4532745215311005 [2021-11-02 22:57:55,297 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 6063 transitions. [2021-11-02 22:57:55,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 6063 transitions. [2021-11-02 22:57:55,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:55,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 6063 transitions. [2021-11-02 22:57:55,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 68.89772727272727) internal successors, (6063), 88 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:55,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 152.0) internal successors, (13528), 89 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:55,324 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 152.0) internal successors, (13528), 89 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:55,325 INFO L186 Difference]: Start difference. First operand has 335 places, 165 transitions, 1011 flow. Second operand 88 states and 6063 transitions. [2021-11-02 22:57:55,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 637 transitions, 6455 flow [2021-11-02 22:57:55,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 637 transitions, 5282 flow, removed 581 selfloop flow, removed 27 redundant places. [2021-11-02 22:57:55,443 INFO L242 Difference]: Finished difference. Result has 453 places, 178 transitions, 1299 flow [2021-11-02 22:57:55,444 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=1299, PETRI_PLACES=453, PETRI_TRANSITIONS=178} [2021-11-02 22:57:55,444 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 317 predicate places. [2021-11-02 22:57:55,444 INFO L470 AbstractCegarLoop]: Abstraction has has 453 places, 178 transitions, 1299 flow [2021-11-02 22:57:55,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:55,444 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:57:55,445 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:55,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-02 22:57:55,445 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:57:55,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1113137701, now seen corresponding path program 3 times [2021-11-02 22:57:55,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:55,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550605770] [2021-11-02 22:57:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:55,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:56,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:56,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550605770] [2021-11-02 22:57:56,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550605770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:56,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:56,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 22:57:56,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541041531] [2021-11-02 22:57:56,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:57:56,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:56,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:57:56,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:57:56,364 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-02 22:57:56,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 178 transitions, 1299 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:56,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:57:56,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-02 22:57:56,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:58:13,211 INFO L129 PetriNetUnfolder]: 1204/3488 cut-off events. [2021-11-02 22:58:13,211 INFO L130 PetriNetUnfolder]: For 58596/58596 co-relation queries the response was YES. [2021-11-02 22:58:13,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19302 conditions, 3488 events. 1204/3488 cut-off events. For 58596/58596 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 25997 event pairs, 60 based on Foata normal form. 1/3453 useless extension candidates. Maximal degree in co-relation 19083. Up to 369 conditions per place. [2021-11-02 22:58:13,300 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 651 selfloop transitions, 35 changer transitions 176/914 dead transitions. [2021-11-02 22:58:13,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 914 transitions, 12037 flow [2021-11-02 22:58:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-02 22:58:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-11-02 22:58:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 6073 transitions. [2021-11-02 22:58:13,306 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4540221291866029 [2021-11-02 22:58:13,306 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 6073 transitions. [2021-11-02 22:58:13,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 6073 transitions. [2021-11-02 22:58:13,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:58:13,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 6073 transitions. [2021-11-02 22:58:13,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 69.01136363636364) internal successors, (6073), 88 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:13,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 152.0) internal successors, (13528), 89 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:13,322 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 152.0) internal successors, (13528), 89 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:13,323 INFO L186 Difference]: Start difference. First operand has 453 places, 178 transitions, 1299 flow. Second operand 88 states and 6073 transitions. [2021-11-02 22:58:13,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 914 transitions, 12037 flow [2021-11-02 22:58:13,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 914 transitions, 10721 flow, removed 635 selfloop flow, removed 45 redundant places. [2021-11-02 22:58:13,617 INFO L242 Difference]: Finished difference. Result has 496 places, 178 transitions, 1394 flow [2021-11-02 22:58:13,617 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=1394, PETRI_PLACES=496, PETRI_TRANSITIONS=178} [2021-11-02 22:58:13,617 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 360 predicate places. [2021-11-02 22:58:13,617 INFO L470 AbstractCegarLoop]: Abstraction has has 496 places, 178 transitions, 1394 flow [2021-11-02 22:58:13,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:13,618 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:58:13,618 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:13,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-02 22:58:13,618 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:58:13,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:13,619 INFO L85 PathProgramCache]: Analyzing trace with hash 87263075, now seen corresponding path program 4 times [2021-11-02 22:58:13,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:13,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27407991] [2021-11-02 22:58:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:13,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:14,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:14,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27407991] [2021-11-02 22:58:14,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27407991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:14,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:14,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 22:58:14,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487609269] [2021-11-02 22:58:14,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:58:14,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:14,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:58:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:58:14,306 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 152 [2021-11-02 22:58:14,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 178 transitions, 1394 flow. Second operand has 28 states, 28 states have (on average 77.07142857142857) internal successors, (2158), 28 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:14,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:58:14,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 152 [2021-11-02 22:58:14,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:58:25,831 INFO L129 PetriNetUnfolder]: 1860/5437 cut-off events. [2021-11-02 22:58:25,831 INFO L130 PetriNetUnfolder]: For 88501/88508 co-relation queries the response was YES. [2021-11-02 22:58:26,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32043 conditions, 5437 events. 1860/5437 cut-off events. For 88501/88508 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 45208 event pairs, 184 based on Foata normal form. 3/5312 useless extension candidates. Maximal degree in co-relation 31795. Up to 1740 conditions per place. [2021-11-02 22:58:26,036 INFO L132 encePairwiseOnDemand]: 117/152 looper letters, 374 selfloop transitions, 31 changer transitions 174/645 dead transitions. [2021-11-02 22:58:26,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 645 transitions, 9378 flow [2021-11-02 22:58:26,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-02 22:58:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-11-02 22:58:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 6453 transitions. [2021-11-02 22:58:26,041 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5306743421052632 [2021-11-02 22:58:26,041 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 6453 transitions. [2021-11-02 22:58:26,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 6453 transitions. [2021-11-02 22:58:26,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:58:26,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 6453 transitions. [2021-11-02 22:58:26,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 80.6625) internal successors, (6453), 80 states have internal predecessors, (6453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:26,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 152.0) internal successors, (12312), 81 states have internal predecessors, (12312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:26,056 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 152.0) internal successors, (12312), 81 states have internal predecessors, (12312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:26,057 INFO L186 Difference]: Start difference. First operand has 496 places, 178 transitions, 1394 flow. Second operand 80 states and 6453 transitions. [2021-11-02 22:58:26,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 645 transitions, 9378 flow [2021-11-02 22:58:26,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 645 transitions, 8539 flow, removed 184 selfloop flow, removed 82 redundant places. [2021-11-02 22:58:26,388 INFO L242 Difference]: Finished difference. Result has 499 places, 200 transitions, 1961 flow [2021-11-02 22:58:26,388 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=1961, PETRI_PLACES=499, PETRI_TRANSITIONS=200} [2021-11-02 22:58:26,388 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 363 predicate places. [2021-11-02 22:58:26,389 INFO L470 AbstractCegarLoop]: Abstraction has has 499 places, 200 transitions, 1961 flow [2021-11-02 22:58:26,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 77.07142857142857) internal successors, (2158), 28 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:26,389 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:58:26,389 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:26,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-02 22:58:26,389 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:58:26,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:26,390 INFO L85 PathProgramCache]: Analyzing trace with hash 786110799, now seen corresponding path program 5 times [2021-11-02 22:58:26,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:26,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428704011] [2021-11-02 22:58:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:26,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:27,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:27,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428704011] [2021-11-02 22:58:27,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428704011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:27,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:27,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 22:58:27,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430591170] [2021-11-02 22:58:27,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:58:27,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:27,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:58:27,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:58:27,306 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-02 22:58:27,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 200 transitions, 1961 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:27,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:58:27,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-02 22:58:27,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:58:41,654 INFO L129 PetriNetUnfolder]: 1979/5944 cut-off events. [2021-11-02 22:58:41,655 INFO L130 PetriNetUnfolder]: For 195018/195021 co-relation queries the response was YES. [2021-11-02 22:58:41,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42156 conditions, 5944 events. 1979/5944 cut-off events. For 195018/195021 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 52030 event pairs, 136 based on Foata normal form. 1/5884 useless extension candidates. Maximal degree in co-relation 41898. Up to 656 conditions per place. [2021-11-02 22:58:41,927 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 678 selfloop transitions, 42 changer transitions 152/924 dead transitions. [2021-11-02 22:58:41,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 924 transitions, 15127 flow [2021-11-02 22:58:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-02 22:58:41,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-02 22:58:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5811 transitions. [2021-11-02 22:58:41,935 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.45512218045112784 [2021-11-02 22:58:41,935 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 5811 transitions. [2021-11-02 22:58:41,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 5811 transitions. [2021-11-02 22:58:41,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:58:41,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 5811 transitions. [2021-11-02 22:58:41,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 69.17857142857143) internal successors, (5811), 84 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:41,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:41,951 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:41,951 INFO L186 Difference]: Start difference. First operand has 499 places, 200 transitions, 1961 flow. Second operand 84 states and 5811 transitions. [2021-11-02 22:58:41,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 924 transitions, 15127 flow [2021-11-02 22:58:42,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 924 transitions, 13235 flow, removed 884 selfloop flow, removed 48 redundant places. [2021-11-02 22:58:42,801 INFO L242 Difference]: Finished difference. Result has 539 places, 206 transitions, 2076 flow [2021-11-02 22:58:42,801 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2076, PETRI_PLACES=539, PETRI_TRANSITIONS=206} [2021-11-02 22:58:42,802 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 403 predicate places. [2021-11-02 22:58:42,802 INFO L470 AbstractCegarLoop]: Abstraction has has 539 places, 206 transitions, 2076 flow [2021-11-02 22:58:42,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:42,802 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:58:42,802 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:42,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-02 22:58:42,802 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:58:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash 931324477, now seen corresponding path program 6 times [2021-11-02 22:58:42,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:42,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707144475] [2021-11-02 22:58:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:42,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:43,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:43,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707144475] [2021-11-02 22:58:43,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707144475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:43,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:43,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 22:58:43,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455637195] [2021-11-02 22:58:43,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:58:43,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:43,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:58:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:58:43,954 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-02 22:58:43,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 206 transitions, 2076 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:43,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:58:43,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-02 22:58:43,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:59:03,314 INFO L129 PetriNetUnfolder]: 1974/5589 cut-off events. [2021-11-02 22:59:03,314 INFO L130 PetriNetUnfolder]: For 141363/141366 co-relation queries the response was YES. [2021-11-02 22:59:03,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39211 conditions, 5589 events. 1974/5589 cut-off events. For 141363/141366 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 46215 event pairs, 881 based on Foata normal form. 1/5465 useless extension candidates. Maximal degree in co-relation 38930. Up to 3031 conditions per place. [2021-11-02 22:59:03,580 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 473 selfloop transitions, 35 changer transitions 147/707 dead transitions. [2021-11-02 22:59:03,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 707 transitions, 11259 flow [2021-11-02 22:59:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-02 22:59:03,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-02 22:59:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5788 transitions. [2021-11-02 22:59:03,586 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4533208020050125 [2021-11-02 22:59:03,586 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 5788 transitions. [2021-11-02 22:59:03,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 5788 transitions. [2021-11-02 22:59:03,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:59:03,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 5788 transitions. [2021-11-02 22:59:03,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 68.9047619047619) internal successors, (5788), 84 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:03,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:03,604 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:03,604 INFO L186 Difference]: Start difference. First operand has 539 places, 206 transitions, 2076 flow. Second operand 84 states and 5788 transitions. [2021-11-02 22:59:03,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 707 transitions, 11259 flow [2021-11-02 22:59:04,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 707 transitions, 10007 flow, removed 533 selfloop flow, removed 69 redundant places. [2021-11-02 22:59:04,295 INFO L242 Difference]: Finished difference. Result has 557 places, 209 transitions, 2199 flow [2021-11-02 22:59:04,295 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2199, PETRI_PLACES=557, PETRI_TRANSITIONS=209} [2021-11-02 22:59:04,295 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 421 predicate places. [2021-11-02 22:59:04,295 INFO L470 AbstractCegarLoop]: Abstraction has has 557 places, 209 transitions, 2199 flow [2021-11-02 22:59:04,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:04,296 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:59:04,296 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:59:04,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-02 22:59:04,296 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:59:04,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:04,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1936999971, now seen corresponding path program 7 times [2021-11-02 22:59:04,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:04,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361644428] [2021-11-02 22:59:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:04,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:05,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:05,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361644428] [2021-11-02 22:59:05,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361644428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:59:05,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:59:05,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 22:59:05,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381164168] [2021-11-02 22:59:05,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:59:05,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:05,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:59:05,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:59:05,275 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-02 22:59:05,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 209 transitions, 2199 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:05,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:59:05,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-02 22:59:05,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:59:25,070 INFO L129 PetriNetUnfolder]: 2591/7460 cut-off events. [2021-11-02 22:59:25,070 INFO L130 PetriNetUnfolder]: For 262191/262191 co-relation queries the response was YES. [2021-11-02 22:59:25,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58360 conditions, 7460 events. 2591/7460 cut-off events. For 262191/262191 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 66540 event pairs, 695 based on Foata normal form. 1/7296 useless extension candidates. Maximal degree in co-relation 58071. Up to 1647 conditions per place. [2021-11-02 22:59:25,488 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 476 selfloop transitions, 31 changer transitions 103/662 dead transitions. [2021-11-02 22:59:25,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 662 transitions, 11573 flow [2021-11-02 22:59:25,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-02 22:59:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-11-02 22:59:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 5050 transitions. [2021-11-02 22:59:25,492 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4614400584795322 [2021-11-02 22:59:25,492 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 5050 transitions. [2021-11-02 22:59:25,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 5050 transitions. [2021-11-02 22:59:25,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:59:25,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 5050 transitions. [2021-11-02 22:59:25,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 70.13888888888889) internal successors, (5050), 72 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:25,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 152.0) internal successors, (11096), 73 states have internal predecessors, (11096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:25,505 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 152.0) internal successors, (11096), 73 states have internal predecessors, (11096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:25,505 INFO L186 Difference]: Start difference. First operand has 557 places, 209 transitions, 2199 flow. Second operand 72 states and 5050 transitions. [2021-11-02 22:59:25,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 662 transitions, 11573 flow [2021-11-02 22:59:26,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 662 transitions, 10374 flow, removed 581 selfloop flow, removed 65 redundant places. [2021-11-02 22:59:26,710 INFO L242 Difference]: Finished difference. Result has 564 places, 228 transitions, 2704 flow [2021-11-02 22:59:26,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=2704, PETRI_PLACES=564, PETRI_TRANSITIONS=228} [2021-11-02 22:59:26,710 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 428 predicate places. [2021-11-02 22:59:26,710 INFO L470 AbstractCegarLoop]: Abstraction has has 564 places, 228 transitions, 2704 flow [2021-11-02 22:59:26,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:26,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:59:26,711 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:59:26,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-11-02 22:59:26,711 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:59:26,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash 133363451, now seen corresponding path program 8 times [2021-11-02 22:59:26,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:26,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626145998] [2021-11-02 22:59:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:26,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:27,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:27,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626145998] [2021-11-02 22:59:27,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626145998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:59:27,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:59:27,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 22:59:27,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215861238] [2021-11-02 22:59:27,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:59:27,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:59:27,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:59:27,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-02 22:59:27,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 228 transitions, 2704 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:27,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:59:27,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-02 22:59:27,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:59:44,814 INFO L129 PetriNetUnfolder]: 2707/7933 cut-off events. [2021-11-02 22:59:44,814 INFO L130 PetriNetUnfolder]: For 365804/365815 co-relation queries the response was YES. [2021-11-02 22:59:45,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67400 conditions, 7933 events. 2707/7933 cut-off events. For 365804/365815 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 73529 event pairs, 256 based on Foata normal form. 4/7844 useless extension candidates. Maximal degree in co-relation 67101. Up to 1403 conditions per place. [2021-11-02 22:59:45,214 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 655 selfloop transitions, 59 changer transitions 157/923 dead transitions. [2021-11-02 22:59:45,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 923 transitions, 16466 flow [2021-11-02 22:59:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-02 22:59:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-02 22:59:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5810 transitions. [2021-11-02 22:59:45,220 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4550438596491228 [2021-11-02 22:59:45,220 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 5810 transitions. [2021-11-02 22:59:45,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 5810 transitions. [2021-11-02 22:59:45,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:59:45,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 5810 transitions. [2021-11-02 22:59:45,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 69.16666666666667) internal successors, (5810), 84 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:45,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:45,237 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:45,237 INFO L186 Difference]: Start difference. First operand has 564 places, 228 transitions, 2704 flow. Second operand 84 states and 5810 transitions. [2021-11-02 22:59:45,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 923 transitions, 16466 flow [2021-11-02 22:59:46,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 923 transitions, 14974 flow, removed 719 selfloop flow, removed 51 redundant places. [2021-11-02 22:59:47,006 INFO L242 Difference]: Finished difference. Result has 616 places, 235 transitions, 2926 flow [2021-11-02 22:59:47,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2926, PETRI_PLACES=616, PETRI_TRANSITIONS=235} [2021-11-02 22:59:47,006 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 480 predicate places. [2021-11-02 22:59:47,006 INFO L470 AbstractCegarLoop]: Abstraction has has 616 places, 235 transitions, 2926 flow [2021-11-02 22:59:47,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:47,007 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:59:47,007 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:59:47,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-11-02 22:59:47,007 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 22:59:47,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:47,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1077480557, now seen corresponding path program 9 times [2021-11-02 22:59:47,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:47,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243269149] [2021-11-02 22:59:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:47,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:48,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:48,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243269149] [2021-11-02 22:59:48,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243269149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:59:48,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:59:48,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 22:59:48,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290445071] [2021-11-02 22:59:48,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:59:48,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:48,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:59:48,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:59:48,068 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-02 22:59:48,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 235 transitions, 2926 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:48,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:59:48,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-02 22:59:48,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:00:10,874 INFO L129 PetriNetUnfolder]: 2702/7857 cut-off events. [2021-11-02 23:00:10,874 INFO L130 PetriNetUnfolder]: For 301816/301822 co-relation queries the response was YES. [2021-11-02 23:00:11,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64828 conditions, 7857 events. 2702/7857 cut-off events. For 301816/301822 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 70934 event pairs, 1654 based on Foata normal form. 1/7700 useless extension candidates. Maximal degree in co-relation 64505. Up to 2305 conditions per place. [2021-11-02 23:00:11,279 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 472 selfloop transitions, 26 changer transitions 142/692 dead transitions. [2021-11-02 23:00:11,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 692 transitions, 13025 flow [2021-11-02 23:00:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-02 23:00:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-11-02 23:00:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5840 transitions. [2021-11-02 23:00:11,283 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4573934837092732 [2021-11-02 23:00:11,284 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 5840 transitions. [2021-11-02 23:00:11,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 5840 transitions. [2021-11-02 23:00:11,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:00:11,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 5840 transitions. [2021-11-02 23:00:11,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 69.52380952380952) internal successors, (5840), 84 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:11,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:11,298 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 152.0) internal successors, (12920), 85 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:11,299 INFO L186 Difference]: Start difference. First operand has 616 places, 235 transitions, 2926 flow. Second operand 84 states and 5840 transitions. [2021-11-02 23:00:11,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 692 transitions, 13025 flow [2021-11-02 23:00:13,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 692 transitions, 12342 flow, removed 243 selfloop flow, removed 64 redundant places. [2021-11-02 23:00:13,463 INFO L242 Difference]: Finished difference. Result has 649 places, 248 transitions, 3265 flow [2021-11-02 23:00:13,463 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3265, PETRI_PLACES=649, PETRI_TRANSITIONS=248} [2021-11-02 23:00:13,464 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 513 predicate places. [2021-11-02 23:00:13,464 INFO L470 AbstractCegarLoop]: Abstraction has has 649 places, 248 transitions, 3265 flow [2021-11-02 23:00:13,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:13,464 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:00:13,464 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:00:13,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-11-02 23:00:13,465 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 23:00:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:00:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash 782567281, now seen corresponding path program 10 times [2021-11-02 23:00:13,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:00:13,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341336700] [2021-11-02 23:00:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:00:13,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:00:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:00:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:00:14,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:00:14,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341336700] [2021-11-02 23:00:14,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341336700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:00:14,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:00:14,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 23:00:14,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725645337] [2021-11-02 23:00:14,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 23:00:14,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:00:14,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 23:00:14,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2021-11-02 23:00:14,485 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-02 23:00:14,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 248 transitions, 3265 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:14,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:00:14,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-02 23:00:14,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:00:30,844 INFO L129 PetriNetUnfolder]: 2819/8185 cut-off events. [2021-11-02 23:00:30,844 INFO L130 PetriNetUnfolder]: For 477624/477639 co-relation queries the response was YES. [2021-11-02 23:00:31,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77574 conditions, 8185 events. 2819/8185 cut-off events. For 477624/477639 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 75656 event pairs, 306 based on Foata normal form. 6/8082 useless extension candidates. Maximal degree in co-relation 77228. Up to 2083 conditions per place. [2021-11-02 23:00:31,307 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 630 selfloop transitions, 87 changer transitions 75/844 dead transitions. [2021-11-02 23:00:31,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 844 transitions, 17462 flow [2021-11-02 23:00:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-02 23:00:31,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-11-02 23:00:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3138 transitions. [2021-11-02 23:00:31,309 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.46919856459330145 [2021-11-02 23:00:31,309 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3138 transitions. [2021-11-02 23:00:31,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3138 transitions. [2021-11-02 23:00:31,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:00:31,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3138 transitions. [2021-11-02 23:00:31,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 71.31818181818181) internal successors, (3138), 44 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:31,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 152.0) internal successors, (6840), 45 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:31,316 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 152.0) internal successors, (6840), 45 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:31,317 INFO L186 Difference]: Start difference. First operand has 649 places, 248 transitions, 3265 flow. Second operand 44 states and 3138 transitions. [2021-11-02 23:00:31,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 844 transitions, 17462 flow [2021-11-02 23:00:33,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 844 transitions, 15787 flow, removed 826 selfloop flow, removed 69 redundant places. [2021-11-02 23:00:33,582 INFO L242 Difference]: Finished difference. Result has 590 places, 292 transitions, 4497 flow [2021-11-02 23:00:33,582 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4497, PETRI_PLACES=590, PETRI_TRANSITIONS=292} [2021-11-02 23:00:33,582 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 454 predicate places. [2021-11-02 23:00:33,582 INFO L470 AbstractCegarLoop]: Abstraction has has 590 places, 292 transitions, 4497 flow [2021-11-02 23:00:33,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:33,582 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:00:33,583 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:00:33,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-11-02 23:00:33,583 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 23:00:33,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:00:33,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1389230117, now seen corresponding path program 11 times [2021-11-02 23:00:33,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:00:33,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061482621] [2021-11-02 23:00:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:00:33,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:00:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:00:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:00:34,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:00:34,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061482621] [2021-11-02 23:00:34,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061482621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:00:34,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:00:34,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 23:00:34,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105028411] [2021-11-02 23:00:34,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 23:00:34,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:00:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 23:00:34,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2021-11-02 23:00:34,328 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2021-11-02 23:00:34,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 292 transitions, 4497 flow. Second operand has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:34,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:00:34,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2021-11-02 23:00:34,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:00:51,300 INFO L129 PetriNetUnfolder]: 2953/8229 cut-off events. [2021-11-02 23:00:51,300 INFO L130 PetriNetUnfolder]: For 382339/382353 co-relation queries the response was YES. [2021-11-02 23:00:51,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75005 conditions, 8229 events. 2953/8229 cut-off events. For 382339/382353 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 73360 event pairs, 1693 based on Foata normal form. 1/8032 useless extension candidates. Maximal degree in co-relation 74692. Up to 4436 conditions per place. [2021-11-02 23:00:51,755 INFO L132 encePairwiseOnDemand]: 114/152 looper letters, 532 selfloop transitions, 43 changer transitions 129/756 dead transitions. [2021-11-02 23:00:51,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 756 transitions, 15963 flow [2021-11-02 23:00:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-02 23:00:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-11-02 23:00:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 5544 transitions. [2021-11-02 23:00:51,759 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.45592105263157895 [2021-11-02 23:00:51,759 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 5544 transitions. [2021-11-02 23:00:51,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 5544 transitions. [2021-11-02 23:00:51,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:00:51,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 5544 transitions. [2021-11-02 23:00:51,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 69.3) internal successors, (5544), 80 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:51,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 152.0) internal successors, (12312), 81 states have internal predecessors, (12312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:51,771 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 152.0) internal successors, (12312), 81 states have internal predecessors, (12312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:51,772 INFO L186 Difference]: Start difference. First operand has 590 places, 292 transitions, 4497 flow. Second operand 80 states and 5544 transitions. [2021-11-02 23:00:51,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 756 transitions, 15963 flow [2021-11-02 23:00:53,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 756 transitions, 14620 flow, removed 566 selfloop flow, removed 28 redundant places. [2021-11-02 23:00:53,838 INFO L242 Difference]: Finished difference. Result has 690 places, 301 transitions, 4296 flow [2021-11-02 23:00:53,838 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=4296, PETRI_PLACES=690, PETRI_TRANSITIONS=301} [2021-11-02 23:00:53,838 INFO L334 CegarLoopForPetriNet]: 136 programPoint places, 554 predicate places. [2021-11-02 23:00:53,838 INFO L470 AbstractCegarLoop]: Abstraction has has 690 places, 301 transitions, 4296 flow [2021-11-02 23:00:53,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.35714285714286) internal successors, (1830), 28 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:53,839 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:00:53,839 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:00:53,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-11-02 23:00:53,839 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 23:00:53,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:00:53,839 INFO L85 PathProgramCache]: Analyzing trace with hash -758318145, now seen corresponding path program 12 times [2021-11-02 23:00:53,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:00:53,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141173660] [2021-11-02 23:00:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:00:53,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:00:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:00:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:00:54,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:00:54,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141173660] [2021-11-02 23:00:54,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141173660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:00:54,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:00:54,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-02 23:00:54,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146805821] [2021-11-02 23:00:54,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 23:00:54,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:00:54,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 23:00:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2021-11-02 23:00:54,500 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 152 [2021-11-02 23:00:54,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 301 transitions, 4296 flow. Second operand has 28 states, 28 states have (on average 77.07142857142857) internal successors, (2158), 28 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:54,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:00:54,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 152 [2021-11-02 23:00:54,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand