./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/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_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa --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 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:29:26,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:29:26,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:29:26,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:29:26,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:29:26,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:29:26,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:29:26,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:29:26,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:29:26,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:29:26,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:29:26,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:29:26,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:29:26,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:29:26,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:29:26,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:29:26,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:29:26,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:29:26,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:29:26,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:29:26,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:29:26,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:29:26,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:29:26,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:29:26,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:29:26,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:29:26,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:29:26,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:29:26,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:29:26,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:29:26,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:29:26,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:29:26,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:29:26,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:29:26,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:29:26,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:29:26,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:29:26,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:29:26,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:29:26,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:29:26,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:29:26,814 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:29:26,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:29:26,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:29:26,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:29:26,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:29:26,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:29:26,836 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:29:26,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:29:26,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:29:26,837 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:29:26,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:29:26,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:29:26,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:29:26,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:29:26,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:29:26,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:29:26,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:29:26,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:29:26,838 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:29:26,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:29:26,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:29:26,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:29:26,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:29:26,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:29:26,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:29:26,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:29:26,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:29:26,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:29:26,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:29:26,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:29:26,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:29:26,840 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:29:26,840 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:29:26,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:29:26,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:29:26,840 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_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2021-12-06 18:29:27,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:29:27,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:29:27,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:29:27,053 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:29:27,054 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:29:27,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-12-06 18:29:27,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/data/36818cd42/b28dfec0804f4b17af5055e6e7d3d0f5/FLAG652429a0f [2021-12-06 18:29:27,473 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:29:27,473 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-12-06 18:29:27,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/data/36818cd42/b28dfec0804f4b17af5055e6e7d3d0f5/FLAG652429a0f [2021-12-06 18:29:27,488 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/data/36818cd42/b28dfec0804f4b17af5055e6e7d3d0f5 [2021-12-06 18:29:27,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:29:27,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:29:27,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:29:27,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:29:27,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:29:27,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b971e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27, skipping insertion in model container [2021-12-06 18:29:27,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:29:27,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:29:27,645 WARN L230 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_853a7741-a087-48a6-ab06-60dec8700f44/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-12-06 18:29:27,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:29:27,657 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:29:27,675 WARN L230 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_853a7741-a087-48a6-ab06-60dec8700f44/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-12-06 18:29:27,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:29:27,692 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:29:27,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27 WrapperNode [2021-12-06 18:29:27,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:29:27,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:29:27,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:29:27,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:29:27,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,730 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2021-12-06 18:29:27,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:29:27,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:29:27,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:29:27,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:29:27,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:29:27,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:29:27,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:29:27,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:29:27,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27" (1/1) ... [2021-12-06 18:29:27,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:29:27,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:29:27,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:29:27,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853a7741-a087-48a6-ab06-60dec8700f44/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:29:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:29:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-06 18:29:27,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-06 18:29:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-06 18:29:27,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-06 18:29:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:29:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:29:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:29:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:29:27,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:29:27,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:29:27,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:29:27,823 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 18:29:27,880 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:29:27,881 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:29:28,069 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:29:28,080 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:29:28,080 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 18:29:28,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:29:28 BoogieIcfgContainer [2021-12-06 18:29:28,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:29:28,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:29:28,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:29:28,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:29:28,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:29:27" (1/3) ... [2021-12-06 18:29:28,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9b81b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:29:28, skipping insertion in model container [2021-12-06 18:29:28,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:29:27" (2/3) ... [2021-12-06 18:29:28,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9b81b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:29:28, skipping insertion in model container [2021-12-06 18:29:28,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:29:28" (3/3) ... [2021-12-06 18:29:28,090 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2021-12-06 18:29:28,096 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 18:29:28,096 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:29:28,096 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:29:28,096 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 18:29:28,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,134 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,157 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:29:28,161 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-06 18:29:28,196 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:29:28,201 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 [2021-12-06 18:29:28,201 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-06 18:29:28,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2021-12-06 18:29:28,272 INFO L129 PetriNetUnfolder]: 13/172 cut-off events. [2021-12-06 18:29:28,272 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-06 18:29:28,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 283 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-12-06 18:29:28,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2021-12-06 18:29:28,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2021-12-06 18:29:28,316 INFO L129 PetriNetUnfolder]: 13/162 cut-off events. [2021-12-06 18:29:28,316 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-06 18:29:28,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:28,317 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] [2021-12-06 18:29:28,317 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash -679452967, now seen corresponding path program 1 times [2021-12-06 18:29:28,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:28,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901378655] [2021-12-06 18:29:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:28,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:28,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:28,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901378655] [2021-12-06 18:29:28,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901378655] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:28,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:28,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:29:28,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115341739] [2021-12-06 18:29:28,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:28,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:29:28,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:28,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:29:28,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:29:28,649 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2021-12-06 18:29:28,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:28,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:28,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2021-12-06 18:29:28,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:28,877 INFO L129 PetriNetUnfolder]: 58/423 cut-off events. [2021-12-06 18:29:28,877 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-12-06 18:29:28,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 423 events. 58/423 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1990 event pairs, 12 based on Foata normal form. 24/420 useless extension candidates. Maximal degree in co-relation 377. Up to 44 conditions per place. [2021-12-06 18:29:28,881 INFO L132 encePairwiseOnDemand]: 154/174 looper letters, 52 selfloop transitions, 10 changer transitions 34/223 dead transitions. [2021-12-06 18:29:28,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 677 flow [2021-12-06 18:29:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:29:28,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-06 18:29:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2175 transitions. [2021-12-06 18:29:28,899 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-12-06 18:29:28,900 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2175 transitions. [2021-12-06 18:29:28,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2175 transitions. [2021-12-06 18:29:28,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:28,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2175 transitions. [2021-12-06 18:29:28,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:28,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:28,929 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:28,930 INFO L186 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 15 states and 2175 transitions. [2021-12-06 18:29:28,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 677 flow [2021-12-06 18:29:28,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 223 transitions, 651 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 18:29:28,939 INFO L242 Difference]: Finished difference. Result has 177 places, 161 transitions, 389 flow [2021-12-06 18:29:28,941 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=389, PETRI_PLACES=177, PETRI_TRANSITIONS=161} [2021-12-06 18:29:28,943 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 20 predicate places. [2021-12-06 18:29:28,944 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 161 transitions, 389 flow [2021-12-06 18:29:28,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:28,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:28,945 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] [2021-12-06 18:29:28,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:29:28,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:28,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:28,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1258678119, now seen corresponding path program 1 times [2021-12-06 18:29:28,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:28,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067620411] [2021-12-06 18:29:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:28,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:29,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:29,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067620411] [2021-12-06 18:29:29,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067620411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:29,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:29,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:29:29,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427998149] [2021-12-06 18:29:29,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:29,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:29:29,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:29,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:29:29,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:29:29,052 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-06 18:29:29,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 161 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:29,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-06 18:29:29,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:29,216 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][55], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-12-06 18:29:29,216 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2021-12-06 18:29:29,216 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-12-06 18:29:29,216 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2021-12-06 18:29:29,216 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-12-06 18:29:29,218 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-12-06 18:29:29,218 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2021-12-06 18:29:29,218 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-12-06 18:29:29,218 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-12-06 18:29:29,218 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2021-12-06 18:29:29,219 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][55], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-12-06 18:29:29,219 INFO L384 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2021-12-06 18:29:29,219 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2021-12-06 18:29:29,219 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-12-06 18:29:29,219 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2021-12-06 18:29:29,219 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-12-06 18:29:29,220 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 149#L44-19true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-12-06 18:29:29,221 INFO L384 tUnfolder$Statistics]: this new event has 78 ancestors and is cut-off event [2021-12-06 18:29:29,221 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2021-12-06 18:29:29,221 INFO L387 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2021-12-06 18:29:29,221 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-12-06 18:29:29,221 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-12-06 18:29:29,221 INFO L384 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2021-12-06 18:29:29,221 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-12-06 18:29:29,222 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2021-12-06 18:29:29,222 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2021-12-06 18:29:29,222 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2021-12-06 18:29:29,223 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, 149#L44-19true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 212#(= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))]) [2021-12-06 18:29:29,223 INFO L384 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2021-12-06 18:29:29,224 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2021-12-06 18:29:29,224 INFO L387 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2021-12-06 18:29:29,224 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-12-06 18:29:29,224 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2021-12-06 18:29:29,241 INFO L129 PetriNetUnfolder]: 107/1061 cut-off events. [2021-12-06 18:29:29,241 INFO L130 PetriNetUnfolder]: For 300/315 co-relation queries the response was YES. [2021-12-06 18:29:29,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1061 events. 107/1061 cut-off events. For 300/315 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8010 event pairs, 17 based on Foata normal form. 6/964 useless extension candidates. Maximal degree in co-relation 1533. Up to 89 conditions per place. [2021-12-06 18:29:29,249 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 31 selfloop transitions, 12 changer transitions 1/185 dead transitions. [2021-12-06 18:29:29,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 185 transitions, 531 flow [2021-12-06 18:29:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:29:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-06 18:29:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2021-12-06 18:29:29,252 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9051724137931034 [2021-12-06 18:29:29,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2021-12-06 18:29:29,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2021-12-06 18:29:29,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:29,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2021-12-06 18:29:29,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,257 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,258 INFO L186 Difference]: Start difference. First operand has 177 places, 161 transitions, 389 flow. Second operand 4 states and 630 transitions. [2021-12-06 18:29:29,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 185 transitions, 531 flow [2021-12-06 18:29:29,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 185 transitions, 520 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-12-06 18:29:29,266 INFO L242 Difference]: Finished difference. Result has 168 places, 171 transitions, 466 flow [2021-12-06 18:29:29,266 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=168, PETRI_TRANSITIONS=171} [2021-12-06 18:29:29,267 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 11 predicate places. [2021-12-06 18:29:29,267 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 171 transitions, 466 flow [2021-12-06 18:29:29,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,268 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:29,268 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] [2021-12-06 18:29:29,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:29:29,268 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:29,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash 405844717, now seen corresponding path program 2 times [2021-12-06 18:29:29,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:29,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782976162] [2021-12-06 18:29:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:29,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:29,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:29,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782976162] [2021-12-06 18:29:29,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782976162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:29,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:29,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:29:29,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773520014] [2021-12-06 18:29:29,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:29,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:29:29,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:29:29,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:29:29,349 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-06 18:29:29,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 171 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:29,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-06 18:29:29,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:29,547 INFO L129 PetriNetUnfolder]: 91/972 cut-off events. [2021-12-06 18:29:29,547 INFO L130 PetriNetUnfolder]: For 263/282 co-relation queries the response was YES. [2021-12-06 18:29:29,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 972 events. 91/972 cut-off events. For 263/282 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7097 event pairs, 25 based on Foata normal form. 12/929 useless extension candidates. Maximal degree in co-relation 1251. Up to 106 conditions per place. [2021-12-06 18:29:29,555 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 37 selfloop transitions, 8 changer transitions 3/189 dead transitions. [2021-12-06 18:29:29,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 189 transitions, 634 flow [2021-12-06 18:29:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:29:29,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-06 18:29:29,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2021-12-06 18:29:29,557 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2021-12-06 18:29:29,557 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2021-12-06 18:29:29,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2021-12-06 18:29:29,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:29,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2021-12-06 18:29:29,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,561 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,562 INFO L186 Difference]: Start difference. First operand has 168 places, 171 transitions, 466 flow. Second operand 4 states and 624 transitions. [2021-12-06 18:29:29,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 189 transitions, 634 flow [2021-12-06 18:29:29,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 189 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 18:29:29,568 INFO L242 Difference]: Finished difference. Result has 174 places, 176 transitions, 540 flow [2021-12-06 18:29:29,568 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=540, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2021-12-06 18:29:29,569 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 17 predicate places. [2021-12-06 18:29:29,569 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 540 flow [2021-12-06 18:29:29,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,569 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:29,570 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] [2021-12-06 18:29:29,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:29:29,570 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:29,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:29,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1435280407, now seen corresponding path program 1 times [2021-12-06 18:29:29,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:29,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20108387] [2021-12-06 18:29:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:29,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:29,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:29,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20108387] [2021-12-06 18:29:29,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20108387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:29,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:29,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:29:29,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740515744] [2021-12-06 18:29:29,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:29,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:29:29,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:29:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:29:29,652 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-06 18:29:29,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:29,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-06 18:29:29,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:29,827 INFO L129 PetriNetUnfolder]: 92/1151 cut-off events. [2021-12-06 18:29:29,827 INFO L130 PetriNetUnfolder]: For 422/443 co-relation queries the response was YES. [2021-12-06 18:29:29,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1817 conditions, 1151 events. 92/1151 cut-off events. For 422/443 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8351 event pairs, 20 based on Foata normal form. 9/1104 useless extension candidates. Maximal degree in co-relation 1503. Up to 71 conditions per place. [2021-12-06 18:29:29,834 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 41 selfloop transitions, 11 changer transitions 3/196 dead transitions. [2021-12-06 18:29:29,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 196 transitions, 738 flow [2021-12-06 18:29:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:29:29,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-06 18:29:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 626 transitions. [2021-12-06 18:29:29,836 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8994252873563219 [2021-12-06 18:29:29,836 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 626 transitions. [2021-12-06 18:29:29,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 626 transitions. [2021-12-06 18:29:29,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:29,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 626 transitions. [2021-12-06 18:29:29,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,840 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,840 INFO L186 Difference]: Start difference. First operand has 174 places, 176 transitions, 540 flow. Second operand 4 states and 626 transitions. [2021-12-06 18:29:29,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 196 transitions, 738 flow [2021-12-06 18:29:29,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 196 transitions, 738 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 18:29:29,845 INFO L242 Difference]: Finished difference. Result has 179 places, 179 transitions, 602 flow [2021-12-06 18:29:29,846 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=602, PETRI_PLACES=179, PETRI_TRANSITIONS=179} [2021-12-06 18:29:29,846 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 22 predicate places. [2021-12-06 18:29:29,847 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 179 transitions, 602 flow [2021-12-06 18:29:29,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,847 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:29,847 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] [2021-12-06 18:29:29,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:29:29,847 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:29,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:29,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1986427037, now seen corresponding path program 2 times [2021-12-06 18:29:29,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:29,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249155488] [2021-12-06 18:29:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:29,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:29,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:29,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249155488] [2021-12-06 18:29:29,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249155488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:29,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:29,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:29:29,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757130125] [2021-12-06 18:29:29,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:29,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:29:29,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:29:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:29:29,894 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-06 18:29:29,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 179 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:29,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:29,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-06 18:29:29,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:30,031 INFO L129 PetriNetUnfolder]: 87/1121 cut-off events. [2021-12-06 18:29:30,031 INFO L130 PetriNetUnfolder]: For 611/629 co-relation queries the response was YES. [2021-12-06 18:29:30,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 1121 events. 87/1121 cut-off events. For 611/629 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7928 event pairs, 26 based on Foata normal form. 13/1084 useless extension candidates. Maximal degree in co-relation 1551. Up to 91 conditions per place. [2021-12-06 18:29:30,038 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 42 selfloop transitions, 13 changer transitions 3/199 dead transitions. [2021-12-06 18:29:30,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 199 transitions, 826 flow [2021-12-06 18:29:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:29:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-06 18:29:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2021-12-06 18:29:30,040 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2021-12-06 18:29:30,040 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2021-12-06 18:29:30,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2021-12-06 18:29:30,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:30,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2021-12-06 18:29:30,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,043 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,043 INFO L186 Difference]: Start difference. First operand has 179 places, 179 transitions, 602 flow. Second operand 4 states and 624 transitions. [2021-12-06 18:29:30,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 199 transitions, 826 flow [2021-12-06 18:29:30,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 199 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 18:29:30,050 INFO L242 Difference]: Finished difference. Result has 183 places, 185 transitions, 698 flow [2021-12-06 18:29:30,050 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2021-12-06 18:29:30,051 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2021-12-06 18:29:30,051 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 698 flow [2021-12-06 18:29:30,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,051 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:30,051 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, 1, 1, 1, 1, 1] [2021-12-06 18:29:30,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:29:30,052 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:30,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:30,052 INFO L85 PathProgramCache]: Analyzing trace with hash 172723029, now seen corresponding path program 3 times [2021-12-06 18:29:30,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:30,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154454744] [2021-12-06 18:29:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:30,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:30,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:30,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154454744] [2021-12-06 18:29:30,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154454744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:30,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:30,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:29:30,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219877902] [2021-12-06 18:29:30,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:30,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:29:30,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:30,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:29:30,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:29:30,104 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-06 18:29:30,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 185 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:30,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-06 18:29:30,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:30,243 INFO L129 PetriNetUnfolder]: 77/1089 cut-off events. [2021-12-06 18:29:30,243 INFO L130 PetriNetUnfolder]: For 686/698 co-relation queries the response was YES. [2021-12-06 18:29:30,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 1089 events. 77/1089 cut-off events. For 686/698 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7531 event pairs, 22 based on Foata normal form. 9/1046 useless extension candidates. Maximal degree in co-relation 1530. Up to 91 conditions per place. [2021-12-06 18:29:30,250 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 40 selfloop transitions, 16 changer transitions 3/200 dead transitions. [2021-12-06 18:29:30,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 200 transitions, 888 flow [2021-12-06 18:29:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:29:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-06 18:29:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2021-12-06 18:29:30,252 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2021-12-06 18:29:30,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2021-12-06 18:29:30,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2021-12-06 18:29:30,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:30,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2021-12-06 18:29:30,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,255 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,255 INFO L186 Difference]: Start difference. First operand has 183 places, 185 transitions, 698 flow. Second operand 4 states and 624 transitions. [2021-12-06 18:29:30,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 200 transitions, 888 flow [2021-12-06 18:29:30,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 200 transitions, 864 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-06 18:29:30,261 INFO L242 Difference]: Finished difference. Result has 185 places, 188 transitions, 759 flow [2021-12-06 18:29:30,262 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=759, PETRI_PLACES=185, PETRI_TRANSITIONS=188} [2021-12-06 18:29:30,263 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 28 predicate places. [2021-12-06 18:29:30,263 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 188 transitions, 759 flow [2021-12-06 18:29:30,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,263 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:30,263 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] [2021-12-06 18:29:30,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:29:30,263 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash -958876555, now seen corresponding path program 3 times [2021-12-06 18:29:30,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:30,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657825622] [2021-12-06 18:29:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:30,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:30,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:30,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657825622] [2021-12-06 18:29:30,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657825622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:30,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:30,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:29:30,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913094221] [2021-12-06 18:29:30,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:30,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:29:30,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:30,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:29:30,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:29:30,312 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-06 18:29:30,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 188 transitions, 759 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:30,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-06 18:29:30,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:30,478 INFO L129 PetriNetUnfolder]: 70/1026 cut-off events. [2021-12-06 18:29:30,478 INFO L130 PetriNetUnfolder]: For 709/718 co-relation queries the response was YES. [2021-12-06 18:29:30,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 1026 events. 70/1026 cut-off events. For 709/718 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6946 event pairs, 24 based on Foata normal form. 5/984 useless extension candidates. Maximal degree in co-relation 1504. Up to 53 conditions per place. [2021-12-06 18:29:30,484 INFO L132 encePairwiseOnDemand]: 161/174 looper letters, 45 selfloop transitions, 21 changer transitions 5/210 dead transitions. [2021-12-06 18:29:30,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 210 transitions, 998 flow [2021-12-06 18:29:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:29:30,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-06 18:29:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2021-12-06 18:29:30,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8988505747126436 [2021-12-06 18:29:30,486 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2021-12-06 18:29:30,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2021-12-06 18:29:30,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:30,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2021-12-06 18:29:30,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,490 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,491 INFO L186 Difference]: Start difference. First operand has 185 places, 188 transitions, 759 flow. Second operand 5 states and 782 transitions. [2021-12-06 18:29:30,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 210 transitions, 998 flow [2021-12-06 18:29:30,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 210 transitions, 981 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 18:29:30,497 INFO L242 Difference]: Finished difference. Result has 191 places, 192 transitions, 870 flow [2021-12-06 18:29:30,497 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=870, PETRI_PLACES=191, PETRI_TRANSITIONS=192} [2021-12-06 18:29:30,498 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 34 predicate places. [2021-12-06 18:29:30,498 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 192 transitions, 870 flow [2021-12-06 18:29:30,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,498 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:30,499 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] [2021-12-06 18:29:30,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:29:30,499 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:30,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1796086946, now seen corresponding path program 1 times [2021-12-06 18:29:30,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:30,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889778594] [2021-12-06 18:29:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:30,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:30,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:30,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889778594] [2021-12-06 18:29:30,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889778594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:30,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:30,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:30,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465104477] [2021-12-06 18:29:30,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:30,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:30,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:30,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:30,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:30,614 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:30,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 192 transitions, 870 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:30,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:30,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:30,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:31,139 INFO L129 PetriNetUnfolder]: 307/1623 cut-off events. [2021-12-06 18:29:31,140 INFO L130 PetriNetUnfolder]: For 1109/1179 co-relation queries the response was YES. [2021-12-06 18:29:31,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 1623 events. 307/1623 cut-off events. For 1109/1179 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12415 event pairs, 211 based on Foata normal form. 1/1567 useless extension candidates. Maximal degree in co-relation 2952. Up to 676 conditions per place. [2021-12-06 18:29:31,150 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 7 changer transitions 52/298 dead transitions. [2021-12-06 18:29:31,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 298 transitions, 1513 flow [2021-12-06 18:29:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 18:29:31,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-06 18:29:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4110 transitions. [2021-12-06 18:29:31,159 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619577308120133 [2021-12-06 18:29:31,159 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4110 transitions. [2021-12-06 18:29:31,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4110 transitions. [2021-12-06 18:29:31,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:31,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4110 transitions. [2021-12-06 18:29:31,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.58064516129033) internal successors, (4110), 31 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:31,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:31,181 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:31,181 INFO L186 Difference]: Start difference. First operand has 191 places, 192 transitions, 870 flow. Second operand 31 states and 4110 transitions. [2021-12-06 18:29:31,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 298 transitions, 1513 flow [2021-12-06 18:29:31,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 298 transitions, 1499 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-12-06 18:29:31,190 INFO L242 Difference]: Finished difference. Result has 247 places, 198 transitions, 991 flow [2021-12-06 18:29:31,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=991, PETRI_PLACES=247, PETRI_TRANSITIONS=198} [2021-12-06 18:29:31,191 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 90 predicate places. [2021-12-06 18:29:31,191 INFO L470 AbstractCegarLoop]: Abstraction has has 247 places, 198 transitions, 991 flow [2021-12-06 18:29:31,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:31,192 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:31,192 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] [2021-12-06 18:29:31,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:29:31,192 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:31,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1337300728, now seen corresponding path program 2 times [2021-12-06 18:29:31,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:31,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653805956] [2021-12-06 18:29:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:31,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:31,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:31,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653805956] [2021-12-06 18:29:31,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653805956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:31,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:31,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:31,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010526217] [2021-12-06 18:29:31,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:31,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:31,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:31,299 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:31,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 198 transitions, 991 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:31,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:31,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:31,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:31,782 INFO L129 PetriNetUnfolder]: 321/1674 cut-off events. [2021-12-06 18:29:31,783 INFO L130 PetriNetUnfolder]: For 6457/6527 co-relation queries the response was YES. [2021-12-06 18:29:31,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5545 conditions, 1674 events. 321/1674 cut-off events. For 6457/6527 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12862 event pairs, 220 based on Foata normal form. 1/1616 useless extension candidates. Maximal degree in co-relation 5389. Up to 718 conditions per place. [2021-12-06 18:29:31,797 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 74 selfloop transitions, 12 changer transitions 39/274 dead transitions. [2021-12-06 18:29:31,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 274 transitions, 1864 flow [2021-12-06 18:29:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 18:29:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-06 18:29:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2021-12-06 18:29:31,805 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2021-12-06 18:29:31,805 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2021-12-06 18:29:31,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2021-12-06 18:29:31,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:31,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2021-12-06 18:29:31,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:31,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:31,823 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:31,823 INFO L186 Difference]: Start difference. First operand has 247 places, 198 transitions, 991 flow. Second operand 26 states and 3446 transitions. [2021-12-06 18:29:31,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 274 transitions, 1864 flow [2021-12-06 18:29:31,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 274 transitions, 1743 flow, removed 60 selfloop flow, removed 12 redundant places. [2021-12-06 18:29:31,843 INFO L242 Difference]: Finished difference. Result has 261 places, 208 transitions, 1147 flow [2021-12-06 18:29:31,844 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1147, PETRI_PLACES=261, PETRI_TRANSITIONS=208} [2021-12-06 18:29:31,844 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 104 predicate places. [2021-12-06 18:29:31,844 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 208 transitions, 1147 flow [2021-12-06 18:29:31,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:31,845 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:31,845 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] [2021-12-06 18:29:31,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:29:31,846 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:31,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:31,846 INFO L85 PathProgramCache]: Analyzing trace with hash 672767696, now seen corresponding path program 3 times [2021-12-06 18:29:31,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:31,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849475834] [2021-12-06 18:29:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:31,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:31,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:31,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849475834] [2021-12-06 18:29:31,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849475834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:31,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:31,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:31,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66505908] [2021-12-06 18:29:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:31,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:31,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:31,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:31,953 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:31,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 208 transitions, 1147 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:31,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:31,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:31,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:32,434 INFO L129 PetriNetUnfolder]: 322/1704 cut-off events. [2021-12-06 18:29:32,434 INFO L130 PetriNetUnfolder]: For 10856/10928 co-relation queries the response was YES. [2021-12-06 18:29:32,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6358 conditions, 1704 events. 322/1704 cut-off events. For 10856/10928 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13181 event pairs, 231 based on Foata normal form. 1/1645 useless extension candidates. Maximal degree in co-relation 6190. Up to 732 conditions per place. [2021-12-06 18:29:32,449 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 18 changer transitions 40/290 dead transitions. [2021-12-06 18:29:32,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 290 transitions, 2504 flow [2021-12-06 18:29:32,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 18:29:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-06 18:29:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3319 transitions. [2021-12-06 18:29:32,456 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629885057471264 [2021-12-06 18:29:32,456 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3319 transitions. [2021-12-06 18:29:32,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3319 transitions. [2021-12-06 18:29:32,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:32,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3319 transitions. [2021-12-06 18:29:32,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.76) internal successors, (3319), 25 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:32,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:32,476 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:32,476 INFO L186 Difference]: Start difference. First operand has 261 places, 208 transitions, 1147 flow. Second operand 25 states and 3319 transitions. [2021-12-06 18:29:32,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 290 transitions, 2504 flow [2021-12-06 18:29:32,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 290 transitions, 2291 flow, removed 100 selfloop flow, removed 12 redundant places. [2021-12-06 18:29:32,514 INFO L242 Difference]: Finished difference. Result has 277 places, 223 transitions, 1423 flow [2021-12-06 18:29:32,515 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1423, PETRI_PLACES=277, PETRI_TRANSITIONS=223} [2021-12-06 18:29:32,515 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 120 predicate places. [2021-12-06 18:29:32,515 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 223 transitions, 1423 flow [2021-12-06 18:29:32,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:32,516 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:32,516 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] [2021-12-06 18:29:32,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:29:32,516 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:32,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash 805415252, now seen corresponding path program 4 times [2021-12-06 18:29:32,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:32,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166458724] [2021-12-06 18:29:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:32,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:32,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:32,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166458724] [2021-12-06 18:29:32,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166458724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:32,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:32,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:32,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007139538] [2021-12-06 18:29:32,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:32,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:32,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:32,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:32,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:32,639 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:32,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 223 transitions, 1423 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:32,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:32,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:32,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:33,177 INFO L129 PetriNetUnfolder]: 319/1719 cut-off events. [2021-12-06 18:29:33,178 INFO L130 PetriNetUnfolder]: For 14794/14868 co-relation queries the response was YES. [2021-12-06 18:29:33,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6996 conditions, 1719 events. 319/1719 cut-off events. For 14794/14868 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13506 event pairs, 218 based on Foata normal form. 1/1659 useless extension candidates. Maximal degree in co-relation 6824. Up to 686 conditions per place. [2021-12-06 18:29:33,194 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 117 selfloop transitions, 17 changer transitions 50/333 dead transitions. [2021-12-06 18:29:33,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 333 transitions, 3170 flow [2021-12-06 18:29:33,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 18:29:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-06 18:29:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3976 transitions. [2021-12-06 18:29:33,198 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616858237547893 [2021-12-06 18:29:33,198 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3976 transitions. [2021-12-06 18:29:33,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3976 transitions. [2021-12-06 18:29:33,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:33,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3976 transitions. [2021-12-06 18:29:33,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.53333333333333) internal successors, (3976), 30 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:33,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:33,208 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:33,208 INFO L186 Difference]: Start difference. First operand has 277 places, 223 transitions, 1423 flow. Second operand 30 states and 3976 transitions. [2021-12-06 18:29:33,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 333 transitions, 3170 flow [2021-12-06 18:29:33,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 333 transitions, 2710 flow, removed 230 selfloop flow, removed 10 redundant places. [2021-12-06 18:29:33,251 INFO L242 Difference]: Finished difference. Result has 308 places, 226 transitions, 1451 flow [2021-12-06 18:29:33,251 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1451, PETRI_PLACES=308, PETRI_TRANSITIONS=226} [2021-12-06 18:29:33,252 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 151 predicate places. [2021-12-06 18:29:33,252 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 226 transitions, 1451 flow [2021-12-06 18:29:33,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:33,252 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:33,252 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] [2021-12-06 18:29:33,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:29:33,252 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:33,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash 763934422, now seen corresponding path program 5 times [2021-12-06 18:29:33,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:33,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155161845] [2021-12-06 18:29:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:33,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:33,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:33,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155161845] [2021-12-06 18:29:33,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155161845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:33,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:33,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:33,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070874724] [2021-12-06 18:29:33,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:33,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:33,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:33,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:33,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:33,354 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:33,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 226 transitions, 1451 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:33,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:33,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:33,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:34,047 INFO L129 PetriNetUnfolder]: 335/1750 cut-off events. [2021-12-06 18:29:34,047 INFO L130 PetriNetUnfolder]: For 16745/16815 co-relation queries the response was YES. [2021-12-06 18:29:34,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7360 conditions, 1750 events. 335/1750 cut-off events. For 16745/16815 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13687 event pairs, 224 based on Foata normal form. 1/1688 useless extension candidates. Maximal degree in co-relation 7224. Up to 728 conditions per place. [2021-12-06 18:29:34,068 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 29 changer transitions 41/312 dead transitions. [2021-12-06 18:29:34,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 2843 flow [2021-12-06 18:29:34,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 18:29:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-06 18:29:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3705 transitions. [2021-12-06 18:29:34,071 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604679802955665 [2021-12-06 18:29:34,071 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3705 transitions. [2021-12-06 18:29:34,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3705 transitions. [2021-12-06 18:29:34,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:34,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3705 transitions. [2021-12-06 18:29:34,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.32142857142858) internal successors, (3705), 28 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:34,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:34,081 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:34,081 INFO L186 Difference]: Start difference. First operand has 308 places, 226 transitions, 1451 flow. Second operand 28 states and 3705 transitions. [2021-12-06 18:29:34,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 2843 flow [2021-12-06 18:29:34,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 312 transitions, 2619 flow, removed 110 selfloop flow, removed 24 redundant places. [2021-12-06 18:29:34,135 INFO L242 Difference]: Finished difference. Result has 306 places, 240 transitions, 1660 flow [2021-12-06 18:29:34,136 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1660, PETRI_PLACES=306, PETRI_TRANSITIONS=240} [2021-12-06 18:29:34,136 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2021-12-06 18:29:34,137 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 240 transitions, 1660 flow [2021-12-06 18:29:34,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:34,137 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:34,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:29:34,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 18:29:34,137 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:34,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1349135860, now seen corresponding path program 6 times [2021-12-06 18:29:34,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:34,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861553313] [2021-12-06 18:29:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:34,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:34,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:34,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861553313] [2021-12-06 18:29:34,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861553313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:34,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:34,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:34,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512738413] [2021-12-06 18:29:34,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:34,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:34,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:34,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:34,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:34,233 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:34,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 240 transitions, 1660 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:34,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:34,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:34,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:34,851 INFO L129 PetriNetUnfolder]: 353/1796 cut-off events. [2021-12-06 18:29:34,852 INFO L130 PetriNetUnfolder]: For 13438/13512 co-relation queries the response was YES. [2021-12-06 18:29:34,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7466 conditions, 1796 events. 353/1796 cut-off events. For 13438/13512 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14124 event pairs, 247 based on Foata normal form. 3/1733 useless extension candidates. Maximal degree in co-relation 7274. Up to 742 conditions per place. [2021-12-06 18:29:34,868 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 35 changer transitions 41/318 dead transitions. [2021-12-06 18:29:34,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 318 transitions, 3045 flow [2021-12-06 18:29:34,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 18:29:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-06 18:29:34,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3452 transitions. [2021-12-06 18:29:34,871 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630415561450045 [2021-12-06 18:29:34,871 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3452 transitions. [2021-12-06 18:29:34,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3452 transitions. [2021-12-06 18:29:34,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:34,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3452 transitions. [2021-12-06 18:29:34,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.76923076923077) internal successors, (3452), 26 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:34,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:34,881 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:34,881 INFO L186 Difference]: Start difference. First operand has 306 places, 240 transitions, 1660 flow. Second operand 26 states and 3452 transitions. [2021-12-06 18:29:34,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 318 transitions, 3045 flow [2021-12-06 18:29:34,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 318 transitions, 2821 flow, removed 103 selfloop flow, removed 18 redundant places. [2021-12-06 18:29:34,942 INFO L242 Difference]: Finished difference. Result has 316 places, 254 transitions, 1929 flow [2021-12-06 18:29:34,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1929, PETRI_PLACES=316, PETRI_TRANSITIONS=254} [2021-12-06 18:29:34,942 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2021-12-06 18:29:34,943 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 254 transitions, 1929 flow [2021-12-06 18:29:34,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:34,943 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:34,943 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] [2021-12-06 18:29:34,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 18:29:34,943 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:34,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:34,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1491611390, now seen corresponding path program 7 times [2021-12-06 18:29:34,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:34,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469309587] [2021-12-06 18:29:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:34,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:35,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:35,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469309587] [2021-12-06 18:29:35,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469309587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:35,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:35,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:35,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182774303] [2021-12-06 18:29:35,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:35,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:35,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:35,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:35,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:35,038 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:35,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 254 transitions, 1929 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:35,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:35,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:35,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:35,617 INFO L129 PetriNetUnfolder]: 347/1785 cut-off events. [2021-12-06 18:29:35,617 INFO L130 PetriNetUnfolder]: For 12004/12083 co-relation queries the response was YES. [2021-12-06 18:29:35,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 1785 events. 347/1785 cut-off events. For 12004/12083 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14085 event pairs, 230 based on Foata normal form. 2/1720 useless extension candidates. Maximal degree in co-relation 7081. Up to 750 conditions per place. [2021-12-06 18:29:35,634 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 39 changer transitions 37/329 dead transitions. [2021-12-06 18:29:35,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 329 transitions, 3436 flow [2021-12-06 18:29:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:29:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 18:29:35,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2021-12-06 18:29:35,636 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2021-12-06 18:29:35,636 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2021-12-06 18:29:35,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2021-12-06 18:29:35,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:35,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2021-12-06 18:29:35,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:35,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:35,644 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:35,644 INFO L186 Difference]: Start difference. First operand has 316 places, 254 transitions, 1929 flow. Second operand 22 states and 2923 transitions. [2021-12-06 18:29:35,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 329 transitions, 3436 flow [2021-12-06 18:29:35,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 329 transitions, 3237 flow, removed 79 selfloop flow, removed 13 redundant places. [2021-12-06 18:29:35,692 INFO L242 Difference]: Finished difference. Result has 324 places, 265 transitions, 2180 flow [2021-12-06 18:29:35,693 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2180, PETRI_PLACES=324, PETRI_TRANSITIONS=265} [2021-12-06 18:29:35,693 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2021-12-06 18:29:35,693 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 265 transitions, 2180 flow [2021-12-06 18:29:35,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:35,694 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:35,694 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] [2021-12-06 18:29:35,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 18:29:35,694 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:35,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:35,695 INFO L85 PathProgramCache]: Analyzing trace with hash 184070188, now seen corresponding path program 8 times [2021-12-06 18:29:35,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:35,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140681273] [2021-12-06 18:29:35,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:35,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:35,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:35,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140681273] [2021-12-06 18:29:35,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140681273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:35,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:35,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:35,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392559535] [2021-12-06 18:29:35,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:35,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:35,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:35,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:35,786 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:35,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 265 transitions, 2180 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:35,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:35,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:35,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:36,322 INFO L129 PetriNetUnfolder]: 342/1788 cut-off events. [2021-12-06 18:29:36,323 INFO L130 PetriNetUnfolder]: For 12321/12405 co-relation queries the response was YES. [2021-12-06 18:29:36,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7247 conditions, 1788 events. 342/1788 cut-off events. For 12321/12405 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14084 event pairs, 228 based on Foata normal form. 9/1732 useless extension candidates. Maximal degree in co-relation 7046. Up to 744 conditions per place. [2021-12-06 18:29:36,343 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 45 changer transitions 33/327 dead transitions. [2021-12-06 18:29:36,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 327 transitions, 3448 flow [2021-12-06 18:29:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:29:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 18:29:36,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2021-12-06 18:29:36,346 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2021-12-06 18:29:36,346 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2021-12-06 18:29:36,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2021-12-06 18:29:36,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:36,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2021-12-06 18:29:36,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 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) [2021-12-06 18:29:36,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:36,354 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:36,355 INFO L186 Difference]: Start difference. First operand has 324 places, 265 transitions, 2180 flow. Second operand 22 states and 2920 transitions. [2021-12-06 18:29:36,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 327 transitions, 3448 flow [2021-12-06 18:29:36,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 327 transitions, 3203 flow, removed 90 selfloop flow, removed 13 redundant places. [2021-12-06 18:29:36,416 INFO L242 Difference]: Finished difference. Result has 330 places, 272 transitions, 2298 flow [2021-12-06 18:29:36,417 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2298, PETRI_PLACES=330, PETRI_TRANSITIONS=272} [2021-12-06 18:29:36,417 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2021-12-06 18:29:36,417 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 272 transitions, 2298 flow [2021-12-06 18:29:36,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:36,418 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:36,418 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] [2021-12-06 18:29:36,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 18:29:36,418 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash 951772256, now seen corresponding path program 9 times [2021-12-06 18:29:36,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:36,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625172022] [2021-12-06 18:29:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:36,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:36,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:36,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625172022] [2021-12-06 18:29:36,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625172022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:36,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:36,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:36,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047768100] [2021-12-06 18:29:36,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:36,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:36,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:36,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:36,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:36,522 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:36,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 272 transitions, 2298 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:36,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:36,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:36,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:37,112 INFO L129 PetriNetUnfolder]: 341/1793 cut-off events. [2021-12-06 18:29:37,112 INFO L130 PetriNetUnfolder]: For 12053/12134 co-relation queries the response was YES. [2021-12-06 18:29:37,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7278 conditions, 1793 events. 341/1793 cut-off events. For 12053/12134 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14175 event pairs, 226 based on Foata normal form. 2/1732 useless extension candidates. Maximal degree in co-relation 7077. Up to 732 conditions per place. [2021-12-06 18:29:37,129 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 38 changer transitions 45/341 dead transitions. [2021-12-06 18:29:37,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 341 transitions, 3730 flow [2021-12-06 18:29:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 18:29:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-06 18:29:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3579 transitions. [2021-12-06 18:29:37,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7618135376756067 [2021-12-06 18:29:37,132 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3579 transitions. [2021-12-06 18:29:37,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3579 transitions. [2021-12-06 18:29:37,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:37,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3579 transitions. [2021-12-06 18:29:37,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.55555555555554) internal successors, (3579), 27 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:37,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:37,141 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:37,141 INFO L186 Difference]: Start difference. First operand has 330 places, 272 transitions, 2298 flow. Second operand 27 states and 3579 transitions. [2021-12-06 18:29:37,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 341 transitions, 3730 flow [2021-12-06 18:29:37,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 341 transitions, 3598 flow, removed 57 selfloop flow, removed 6 redundant places. [2021-12-06 18:29:37,202 INFO L242 Difference]: Finished difference. Result has 358 places, 275 transitions, 2444 flow [2021-12-06 18:29:37,202 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2444, PETRI_PLACES=358, PETRI_TRANSITIONS=275} [2021-12-06 18:29:37,203 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2021-12-06 18:29:37,203 INFO L470 AbstractCegarLoop]: Abstraction has has 358 places, 275 transitions, 2444 flow [2021-12-06 18:29:37,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:37,203 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:37,203 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] [2021-12-06 18:29:37,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 18:29:37,204 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:37,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:37,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1137942998, now seen corresponding path program 10 times [2021-12-06 18:29:37,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:37,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161573257] [2021-12-06 18:29:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:37,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:37,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:37,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161573257] [2021-12-06 18:29:37,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161573257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:37,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:37,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:37,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237092573] [2021-12-06 18:29:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:37,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:37,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:37,289 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:37,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 275 transitions, 2444 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:37,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:37,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:37,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:37,822 INFO L129 PetriNetUnfolder]: 323/1726 cut-off events. [2021-12-06 18:29:37,822 INFO L130 PetriNetUnfolder]: For 11676/11750 co-relation queries the response was YES. [2021-12-06 18:29:37,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7039 conditions, 1726 events. 323/1726 cut-off events. For 11676/11750 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13494 event pairs, 226 based on Foata normal form. 3/1662 useless extension candidates. Maximal degree in co-relation 6878. Up to 736 conditions per place. [2021-12-06 18:29:37,842 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 29 changer transitions 38/313 dead transitions. [2021-12-06 18:29:37,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 313 transitions, 3289 flow [2021-12-06 18:29:37,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 18:29:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 18:29:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2397 transitions. [2021-12-06 18:29:37,844 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653256704980843 [2021-12-06 18:29:37,845 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2397 transitions. [2021-12-06 18:29:37,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2397 transitions. [2021-12-06 18:29:37,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:37,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2397 transitions. [2021-12-06 18:29:37,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.16666666666666) internal successors, (2397), 18 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:37,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:37,850 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:37,850 INFO L186 Difference]: Start difference. First operand has 358 places, 275 transitions, 2444 flow. Second operand 18 states and 2397 transitions. [2021-12-06 18:29:37,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 313 transitions, 3289 flow [2021-12-06 18:29:37,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 313 transitions, 3101 flow, removed 65 selfloop flow, removed 21 redundant places. [2021-12-06 18:29:37,916 INFO L242 Difference]: Finished difference. Result has 342 places, 255 transitions, 2035 flow [2021-12-06 18:29:37,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2035, PETRI_PLACES=342, PETRI_TRANSITIONS=255} [2021-12-06 18:29:37,917 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 185 predicate places. [2021-12-06 18:29:37,917 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 255 transitions, 2035 flow [2021-12-06 18:29:37,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:37,917 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:37,917 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] [2021-12-06 18:29:37,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 18:29:37,917 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:37,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:37,918 INFO L85 PathProgramCache]: Analyzing trace with hash 518182422, now seen corresponding path program 11 times [2021-12-06 18:29:37,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:37,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662470784] [2021-12-06 18:29:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:37,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:37,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:37,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662470784] [2021-12-06 18:29:37,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662470784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:37,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:37,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:37,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372858925] [2021-12-06 18:29:37,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:37,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:37,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:37,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:37,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:38,001 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:38,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 255 transitions, 2035 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:38,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:38,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:38,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:38,451 INFO L129 PetriNetUnfolder]: 326/1734 cut-off events. [2021-12-06 18:29:38,451 INFO L130 PetriNetUnfolder]: For 10912/10986 co-relation queries the response was YES. [2021-12-06 18:29:38,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6970 conditions, 1734 events. 326/1734 cut-off events. For 10912/10986 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13593 event pairs, 228 based on Foata normal form. 3/1672 useless extension candidates. Maximal degree in co-relation 6870. Up to 736 conditions per place. [2021-12-06 18:29:38,468 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 36 changer transitions 30/307 dead transitions. [2021-12-06 18:29:38,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 307 transitions, 3109 flow [2021-12-06 18:29:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:29:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:29:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2021-12-06 18:29:38,470 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2021-12-06 18:29:38,470 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2021-12-06 18:29:38,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2021-12-06 18:29:38,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:38,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2021-12-06 18:29:38,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:38,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:38,476 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:38,476 INFO L186 Difference]: Start difference. First operand has 342 places, 255 transitions, 2035 flow. Second operand 20 states and 2661 transitions. [2021-12-06 18:29:38,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 307 transitions, 3109 flow [2021-12-06 18:29:38,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 307 transitions, 2850 flow, removed 35 selfloop flow, removed 22 redundant places. [2021-12-06 18:29:38,530 INFO L242 Difference]: Finished difference. Result has 324 places, 264 transitions, 2149 flow [2021-12-06 18:29:38,531 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2149, PETRI_PLACES=324, PETRI_TRANSITIONS=264} [2021-12-06 18:29:38,531 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2021-12-06 18:29:38,531 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 264 transitions, 2149 flow [2021-12-06 18:29:38,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:38,531 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:38,531 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] [2021-12-06 18:29:38,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 18:29:38,532 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:38,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:38,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1058941744, now seen corresponding path program 12 times [2021-12-06 18:29:38,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:38,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953170449] [2021-12-06 18:29:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:38,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:38,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:38,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953170449] [2021-12-06 18:29:38,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953170449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:38,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:38,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:38,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144034925] [2021-12-06 18:29:38,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:38,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:38,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:38,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:38,615 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:38,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 264 transitions, 2149 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:38,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:38,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:38,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:39,077 INFO L129 PetriNetUnfolder]: 323/1729 cut-off events. [2021-12-06 18:29:39,077 INFO L130 PetriNetUnfolder]: For 9795/9869 co-relation queries the response was YES. [2021-12-06 18:29:39,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 1729 events. 323/1729 cut-off events. For 9795/9869 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13600 event pairs, 227 based on Foata normal form. 3/1667 useless extension candidates. Maximal degree in co-relation 6647. Up to 736 conditions per place. [2021-12-06 18:29:39,093 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 37 changer transitions 31/310 dead transitions. [2021-12-06 18:29:39,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 310 transitions, 3093 flow [2021-12-06 18:29:39,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:29:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 18:29:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2021-12-06 18:29:39,095 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2021-12-06 18:29:39,095 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2021-12-06 18:29:39,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2021-12-06 18:29:39,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:39,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2021-12-06 18:29:39,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:39,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:29:39,101 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:29:39,101 INFO L186 Difference]: Start difference. First operand has 324 places, 264 transitions, 2149 flow. Second operand 19 states and 2532 transitions. [2021-12-06 18:29:39,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 310 transitions, 3093 flow [2021-12-06 18:29:39,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 310 transitions, 2966 flow, removed 43 selfloop flow, removed 7 redundant places. [2021-12-06 18:29:39,153 INFO L242 Difference]: Finished difference. Result has 334 places, 267 transitions, 2231 flow [2021-12-06 18:29:39,153 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2231, PETRI_PLACES=334, PETRI_TRANSITIONS=267} [2021-12-06 18:29:39,153 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 177 predicate places. [2021-12-06 18:29:39,153 INFO L470 AbstractCegarLoop]: Abstraction has has 334 places, 267 transitions, 2231 flow [2021-12-06 18:29:39,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:39,154 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:39,154 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] [2021-12-06 18:29:39,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 18:29:39,154 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash -8065022, now seen corresponding path program 13 times [2021-12-06 18:29:39,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:39,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649200552] [2021-12-06 18:29:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:39,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:39,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:39,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649200552] [2021-12-06 18:29:39,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649200552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:39,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:39,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:39,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387512922] [2021-12-06 18:29:39,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:39,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:39,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:39,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:39,244 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:39,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 267 transitions, 2231 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:39,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:39,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:39,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:39,708 INFO L129 PetriNetUnfolder]: 322/1724 cut-off events. [2021-12-06 18:29:39,708 INFO L130 PetriNetUnfolder]: For 9816/9898 co-relation queries the response was YES. [2021-12-06 18:29:39,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 1724 events. 322/1724 cut-off events. For 9816/9898 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13466 event pairs, 227 based on Foata normal form. 3/1662 useless extension candidates. Maximal degree in co-relation 6550. Up to 734 conditions per place. [2021-12-06 18:29:39,725 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 27 changer transitions 41/310 dead transitions. [2021-12-06 18:29:39,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 310 transitions, 3066 flow [2021-12-06 18:29:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:29:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 18:29:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2790 transitions. [2021-12-06 18:29:39,727 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635467980295566 [2021-12-06 18:29:39,727 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2790 transitions. [2021-12-06 18:29:39,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2790 transitions. [2021-12-06 18:29:39,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:39,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2790 transitions. [2021-12-06 18:29:39,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.85714285714286) internal successors, (2790), 21 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:39,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:39,733 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:39,733 INFO L186 Difference]: Start difference. First operand has 334 places, 267 transitions, 2231 flow. Second operand 21 states and 2790 transitions. [2021-12-06 18:29:39,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 310 transitions, 3066 flow [2021-12-06 18:29:39,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 310 transitions, 2939 flow, removed 26 selfloop flow, removed 8 redundant places. [2021-12-06 18:29:39,788 INFO L242 Difference]: Finished difference. Result has 346 places, 258 transitions, 2031 flow [2021-12-06 18:29:39,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2031, PETRI_PLACES=346, PETRI_TRANSITIONS=258} [2021-12-06 18:29:39,789 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2021-12-06 18:29:39,789 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 258 transitions, 2031 flow [2021-12-06 18:29:39,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:39,789 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:39,789 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] [2021-12-06 18:29:39,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 18:29:39,790 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1927747958, now seen corresponding path program 14 times [2021-12-06 18:29:39,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:39,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231141080] [2021-12-06 18:29:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:39,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:39,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:39,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231141080] [2021-12-06 18:29:39,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231141080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:39,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:39,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:39,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72834139] [2021-12-06 18:29:39,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:39,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:39,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:39,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:39,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:39,882 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:39,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 258 transitions, 2031 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:39,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:39,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:39,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:40,355 INFO L129 PetriNetUnfolder]: 309/1672 cut-off events. [2021-12-06 18:29:40,355 INFO L130 PetriNetUnfolder]: For 9541/9622 co-relation queries the response was YES. [2021-12-06 18:29:40,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6333 conditions, 1672 events. 309/1672 cut-off events. For 9541/9622 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12976 event pairs, 224 based on Foata normal form. 3/1612 useless extension candidates. Maximal degree in co-relation 6230. Up to 722 conditions per place. [2021-12-06 18:29:40,371 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 82 selfloop transitions, 14 changer transitions 43/288 dead transitions. [2021-12-06 18:29:40,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 288 transitions, 2632 flow [2021-12-06 18:29:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:29:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 18:29:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2910 transitions. [2021-12-06 18:29:40,374 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601880877742947 [2021-12-06 18:29:40,374 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2910 transitions. [2021-12-06 18:29:40,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2910 transitions. [2021-12-06 18:29:40,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:40,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2910 transitions. [2021-12-06 18:29:40,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.27272727272728) internal successors, (2910), 22 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:40,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:40,379 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:40,379 INFO L186 Difference]: Start difference. First operand has 346 places, 258 transitions, 2031 flow. Second operand 22 states and 2910 transitions. [2021-12-06 18:29:40,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 288 transitions, 2632 flow [2021-12-06 18:29:40,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 288 transitions, 2447 flow, removed 38 selfloop flow, removed 26 redundant places. [2021-12-06 18:29:40,427 INFO L242 Difference]: Finished difference. Result has 329 places, 235 transitions, 1594 flow [2021-12-06 18:29:40,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1594, PETRI_PLACES=329, PETRI_TRANSITIONS=235} [2021-12-06 18:29:40,428 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 172 predicate places. [2021-12-06 18:29:40,428 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 235 transitions, 1594 flow [2021-12-06 18:29:40,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:40,428 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:40,428 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] [2021-12-06 18:29:40,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 18:29:40,429 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:40,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1376564854, now seen corresponding path program 15 times [2021-12-06 18:29:40,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:40,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243763784] [2021-12-06 18:29:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:40,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:40,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:40,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243763784] [2021-12-06 18:29:40,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243763784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:40,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:40,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:40,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845549150] [2021-12-06 18:29:40,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:40,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:40,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:40,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:40,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:40,526 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:40,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 235 transitions, 1594 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:40,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:40,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:40,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:41,047 INFO L129 PetriNetUnfolder]: 318/1696 cut-off events. [2021-12-06 18:29:41,047 INFO L130 PetriNetUnfolder]: For 9351/9426 co-relation queries the response was YES. [2021-12-06 18:29:41,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6412 conditions, 1696 events. 318/1696 cut-off events. For 9351/9426 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13162 event pairs, 234 based on Foata normal form. 1/1633 useless extension candidates. Maximal degree in co-relation 6318. Up to 722 conditions per place. [2021-12-06 18:29:41,063 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 26 changer transitions 35/297 dead transitions. [2021-12-06 18:29:41,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 297 transitions, 2701 flow [2021-12-06 18:29:41,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 18:29:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 18:29:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3186 transitions. [2021-12-06 18:29:41,066 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629310344827587 [2021-12-06 18:29:41,066 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3186 transitions. [2021-12-06 18:29:41,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3186 transitions. [2021-12-06 18:29:41,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:41,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3186 transitions. [2021-12-06 18:29:41,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.75) internal successors, (3186), 24 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:41,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:41,072 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:41,072 INFO L186 Difference]: Start difference. First operand has 329 places, 235 transitions, 1594 flow. Second operand 24 states and 3186 transitions. [2021-12-06 18:29:41,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 297 transitions, 2701 flow [2021-12-06 18:29:41,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 297 transitions, 2454 flow, removed 43 selfloop flow, removed 23 redundant places. [2021-12-06 18:29:41,115 INFO L242 Difference]: Finished difference. Result has 311 places, 246 transitions, 1738 flow [2021-12-06 18:29:41,115 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1738, PETRI_PLACES=311, PETRI_TRANSITIONS=246} [2021-12-06 18:29:41,116 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 154 predicate places. [2021-12-06 18:29:41,116 INFO L470 AbstractCegarLoop]: Abstraction has has 311 places, 246 transitions, 1738 flow [2021-12-06 18:29:41,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:41,116 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:41,116 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] [2021-12-06 18:29:41,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 18:29:41,116 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:41,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:41,117 INFO L85 PathProgramCache]: Analyzing trace with hash 207788190, now seen corresponding path program 16 times [2021-12-06 18:29:41,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:41,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572157420] [2021-12-06 18:29:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:41,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:41,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:41,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572157420] [2021-12-06 18:29:41,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572157420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:41,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:41,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:41,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061465725] [2021-12-06 18:29:41,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:41,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:41,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:41,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:41,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:41,201 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:41,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 246 transitions, 1738 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:41,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:41,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:41,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:41,637 INFO L129 PetriNetUnfolder]: 314/1691 cut-off events. [2021-12-06 18:29:41,638 INFO L130 PetriNetUnfolder]: For 8770/8844 co-relation queries the response was YES. [2021-12-06 18:29:41,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 1691 events. 314/1691 cut-off events. For 8770/8844 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13201 event pairs, 230 based on Foata normal form. 3/1630 useless extension candidates. Maximal degree in co-relation 6250. Up to 724 conditions per place. [2021-12-06 18:29:41,653 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 86 selfloop transitions, 28 changer transitions 36/299 dead transitions. [2021-12-06 18:29:41,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 299 transitions, 2714 flow [2021-12-06 18:29:41,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 18:29:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-06 18:29:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3055 transitions. [2021-12-06 18:29:41,656 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763368315842079 [2021-12-06 18:29:41,656 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3055 transitions. [2021-12-06 18:29:41,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3055 transitions. [2021-12-06 18:29:41,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:41,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3055 transitions. [2021-12-06 18:29:41,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.82608695652175) internal successors, (3055), 23 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:41,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:41,664 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:41,664 INFO L186 Difference]: Start difference. First operand has 311 places, 246 transitions, 1738 flow. Second operand 23 states and 3055 transitions. [2021-12-06 18:29:41,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 299 transitions, 2714 flow [2021-12-06 18:29:41,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 299 transitions, 2611 flow, removed 46 selfloop flow, removed 12 redundant places. [2021-12-06 18:29:41,710 INFO L242 Difference]: Finished difference. Result has 322 places, 250 transitions, 1880 flow [2021-12-06 18:29:41,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1880, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2021-12-06 18:29:41,711 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2021-12-06 18:29:41,711 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 1880 flow [2021-12-06 18:29:41,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:41,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:41,712 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] [2021-12-06 18:29:41,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 18:29:41,712 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:41,712 INFO L85 PathProgramCache]: Analyzing trace with hash 305216672, now seen corresponding path program 17 times [2021-12-06 18:29:41,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:41,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837901770] [2021-12-06 18:29:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:41,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:41,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:41,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837901770] [2021-12-06 18:29:41,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837901770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:41,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:41,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:41,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719629767] [2021-12-06 18:29:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:41,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:41,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:41,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:41,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:41,787 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:41,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 1880 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:41,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:41,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:41,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:42,239 INFO L129 PetriNetUnfolder]: 310/1678 cut-off events. [2021-12-06 18:29:42,239 INFO L130 PetriNetUnfolder]: For 8984/9059 co-relation queries the response was YES. [2021-12-06 18:29:42,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6296 conditions, 1678 events. 310/1678 cut-off events. For 8984/9059 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13060 event pairs, 232 based on Foata normal form. 1/1615 useless extension candidates. Maximal degree in co-relation 6198. Up to 722 conditions per place. [2021-12-06 18:29:42,255 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 30 changer transitions 30/294 dead transitions. [2021-12-06 18:29:42,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 294 transitions, 2745 flow [2021-12-06 18:29:42,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:29:42,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:29:42,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2664 transitions. [2021-12-06 18:29:42,257 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2021-12-06 18:29:42,257 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2664 transitions. [2021-12-06 18:29:42,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2664 transitions. [2021-12-06 18:29:42,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:42,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2664 transitions. [2021-12-06 18:29:42,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.2) internal successors, (2664), 20 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:42,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:42,261 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:42,261 INFO L186 Difference]: Start difference. First operand has 322 places, 250 transitions, 1880 flow. Second operand 20 states and 2664 transitions. [2021-12-06 18:29:42,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 294 transitions, 2745 flow [2021-12-06 18:29:42,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 294 transitions, 2597 flow, removed 52 selfloop flow, removed 14 redundant places. [2021-12-06 18:29:42,305 INFO L242 Difference]: Finished difference. Result has 322 places, 257 transitions, 1994 flow [2021-12-06 18:29:42,305 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1994, PETRI_PLACES=322, PETRI_TRANSITIONS=257} [2021-12-06 18:29:42,306 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2021-12-06 18:29:42,306 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 257 transitions, 1994 flow [2021-12-06 18:29:42,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:42,306 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:42,306 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] [2021-12-06 18:29:42,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 18:29:42,306 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:42,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash -547353468, now seen corresponding path program 18 times [2021-12-06 18:29:42,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:42,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929986419] [2021-12-06 18:29:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:42,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:42,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:42,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929986419] [2021-12-06 18:29:42,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929986419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:42,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:42,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:42,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789906274] [2021-12-06 18:29:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:42,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:42,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:42,397 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:42,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 257 transitions, 1994 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:42,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:42,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:42,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:42,877 INFO L129 PetriNetUnfolder]: 313/1688 cut-off events. [2021-12-06 18:29:42,877 INFO L130 PetriNetUnfolder]: For 9095/9170 co-relation queries the response was YES. [2021-12-06 18:29:42,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6396 conditions, 1688 events. 313/1688 cut-off events. For 9095/9170 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13159 event pairs, 232 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 6301. Up to 722 conditions per place. [2021-12-06 18:29:42,892 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 38 changer transitions 30/302 dead transitions. [2021-12-06 18:29:42,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 302 transitions, 2908 flow [2021-12-06 18:29:42,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:29:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 18:29:42,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2533 transitions. [2021-12-06 18:29:42,895 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661826981246219 [2021-12-06 18:29:42,895 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2533 transitions. [2021-12-06 18:29:42,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2533 transitions. [2021-12-06 18:29:42,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:42,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2533 transitions. [2021-12-06 18:29:42,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.31578947368422) internal successors, (2533), 19 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:42,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:29:42,899 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:29:42,899 INFO L186 Difference]: Start difference. First operand has 322 places, 257 transitions, 1994 flow. Second operand 19 states and 2533 transitions. [2021-12-06 18:29:42,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 302 transitions, 2908 flow [2021-12-06 18:29:42,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 302 transitions, 2789 flow, removed 37 selfloop flow, removed 7 redundant places. [2021-12-06 18:29:42,944 INFO L242 Difference]: Finished difference. Result has 333 places, 265 transitions, 2172 flow [2021-12-06 18:29:42,944 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2172, PETRI_PLACES=333, PETRI_TRANSITIONS=265} [2021-12-06 18:29:42,944 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2021-12-06 18:29:42,944 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 265 transitions, 2172 flow [2021-12-06 18:29:42,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:42,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:42,945 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] [2021-12-06 18:29:42,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 18:29:42,945 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash -123208248, now seen corresponding path program 19 times [2021-12-06 18:29:42,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:42,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009146170] [2021-12-06 18:29:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:42,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:43,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:43,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009146170] [2021-12-06 18:29:43,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009146170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:43,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:43,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:43,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952139724] [2021-12-06 18:29:43,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:43,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:43,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:43,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:43,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:43,025 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:43,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 265 transitions, 2172 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:43,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:43,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:43,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:43,471 INFO L129 PetriNetUnfolder]: 310/1695 cut-off events. [2021-12-06 18:29:43,471 INFO L130 PetriNetUnfolder]: For 9184/9259 co-relation queries the response was YES. [2021-12-06 18:29:43,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6420 conditions, 1695 events. 310/1695 cut-off events. For 9184/9259 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13208 event pairs, 231 based on Foata normal form. 1/1632 useless extension candidates. Maximal degree in co-relation 6319. Up to 722 conditions per place. [2021-12-06 18:29:43,486 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 34 changer transitions 31/306 dead transitions. [2021-12-06 18:29:43,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 306 transitions, 3048 flow [2021-12-06 18:29:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:29:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:29:43,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2664 transitions. [2021-12-06 18:29:43,488 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2021-12-06 18:29:43,489 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2664 transitions. [2021-12-06 18:29:43,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2664 transitions. [2021-12-06 18:29:43,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:43,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2664 transitions. [2021-12-06 18:29:43,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.2) internal successors, (2664), 20 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:43,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:43,493 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:43,493 INFO L186 Difference]: Start difference. First operand has 333 places, 265 transitions, 2172 flow. Second operand 20 states and 2664 transitions. [2021-12-06 18:29:43,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 306 transitions, 3048 flow [2021-12-06 18:29:43,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 306 transitions, 2928 flow, removed 23 selfloop flow, removed 9 redundant places. [2021-12-06 18:29:43,540 INFO L242 Difference]: Finished difference. Result has 343 places, 269 transitions, 2265 flow [2021-12-06 18:29:43,540 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2265, PETRI_PLACES=343, PETRI_TRANSITIONS=269} [2021-12-06 18:29:43,541 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2021-12-06 18:29:43,541 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 269 transitions, 2265 flow [2021-12-06 18:29:43,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:43,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:43,541 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] [2021-12-06 18:29:43,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 18:29:43,541 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:43,542 INFO L85 PathProgramCache]: Analyzing trace with hash -85099410, now seen corresponding path program 20 times [2021-12-06 18:29:43,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:43,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261472056] [2021-12-06 18:29:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:43,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:43,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:43,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261472056] [2021-12-06 18:29:43,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261472056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:43,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:43,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:43,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324498737] [2021-12-06 18:29:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:43,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:43,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:43,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:43,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:43,618 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:43,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 269 transitions, 2265 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:43,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:43,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:43,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:44,060 INFO L129 PetriNetUnfolder]: 305/1689 cut-off events. [2021-12-06 18:29:44,060 INFO L130 PetriNetUnfolder]: For 9041/9116 co-relation queries the response was YES. [2021-12-06 18:29:44,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6319 conditions, 1689 events. 305/1689 cut-off events. For 9041/9116 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13211 event pairs, 232 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 6214. Up to 722 conditions per place. [2021-12-06 18:29:44,077 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 19 changer transitions 44/300 dead transitions. [2021-12-06 18:29:44,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 300 transitions, 2909 flow [2021-12-06 18:29:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:29:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:29:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2021-12-06 18:29:44,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2021-12-06 18:29:44,079 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2021-12-06 18:29:44,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2021-12-06 18:29:44,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:44,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2021-12-06 18:29:44,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:44,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:44,083 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:44,083 INFO L186 Difference]: Start difference. First operand has 343 places, 269 transitions, 2265 flow. Second operand 20 states and 2663 transitions. [2021-12-06 18:29:44,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 300 transitions, 2909 flow [2021-12-06 18:29:44,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 300 transitions, 2812 flow, removed 27 selfloop flow, removed 7 redundant places. [2021-12-06 18:29:44,132 INFO L242 Difference]: Finished difference. Result has 352 places, 252 transitions, 1935 flow [2021-12-06 18:29:44,132 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1935, PETRI_PLACES=352, PETRI_TRANSITIONS=252} [2021-12-06 18:29:44,133 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 195 predicate places. [2021-12-06 18:29:44,133 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 252 transitions, 1935 flow [2021-12-06 18:29:44,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:44,133 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:44,133 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] [2021-12-06 18:29:44,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 18:29:44,134 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:44,134 INFO L85 PathProgramCache]: Analyzing trace with hash 222130868, now seen corresponding path program 21 times [2021-12-06 18:29:44,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:44,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770664804] [2021-12-06 18:29:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:44,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:44,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:44,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770664804] [2021-12-06 18:29:44,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770664804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:44,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:44,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:44,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049252242] [2021-12-06 18:29:44,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:44,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:44,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:44,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:44,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:44,224 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:44,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 252 transitions, 1935 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:44,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:44,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:44,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:44,715 INFO L129 PetriNetUnfolder]: 300/1664 cut-off events. [2021-12-06 18:29:44,715 INFO L130 PetriNetUnfolder]: For 8941/9015 co-relation queries the response was YES. [2021-12-06 18:29:44,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6189 conditions, 1664 events. 300/1664 cut-off events. For 8941/9015 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12991 event pairs, 227 based on Foata normal form. 3/1603 useless extension candidates. Maximal degree in co-relation 6081. Up to 724 conditions per place. [2021-12-06 18:29:44,731 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 78 selfloop transitions, 20 changer transitions 40/287 dead transitions. [2021-12-06 18:29:44,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 287 transitions, 2635 flow [2021-12-06 18:29:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:29:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 18:29:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2021-12-06 18:29:44,733 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2021-12-06 18:29:44,733 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2021-12-06 18:29:44,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2021-12-06 18:29:44,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:44,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2021-12-06 18:29:44,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:44,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:44,738 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:44,738 INFO L186 Difference]: Start difference. First operand has 352 places, 252 transitions, 1935 flow. Second operand 22 states and 2919 transitions. [2021-12-06 18:29:44,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 287 transitions, 2635 flow [2021-12-06 18:29:44,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 287 transitions, 2434 flow, removed 32 selfloop flow, removed 26 redundant places. [2021-12-06 18:29:44,783 INFO L242 Difference]: Finished difference. Result has 333 places, 243 transitions, 1714 flow [2021-12-06 18:29:44,783 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1714, PETRI_PLACES=333, PETRI_TRANSITIONS=243} [2021-12-06 18:29:44,784 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2021-12-06 18:29:44,784 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 243 transitions, 1714 flow [2021-12-06 18:29:44,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:44,784 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:44,784 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] [2021-12-06 18:29:44,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 18:29:44,784 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:44,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash 783451192, now seen corresponding path program 22 times [2021-12-06 18:29:44,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:44,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531315635] [2021-12-06 18:29:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:44,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:44,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:44,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531315635] [2021-12-06 18:29:44,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531315635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:44,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:44,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:44,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861498084] [2021-12-06 18:29:44,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:44,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:44,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:44,867 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:44,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 243 transitions, 1714 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:44,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:44,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:44,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:45,275 INFO L129 PetriNetUnfolder]: 287/1613 cut-off events. [2021-12-06 18:29:45,276 INFO L130 PetriNetUnfolder]: For 8051/8125 co-relation queries the response was YES. [2021-12-06 18:29:45,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5789 conditions, 1613 events. 287/1613 cut-off events. For 8051/8125 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12490 event pairs, 225 based on Foata normal form. 3/1554 useless extension candidates. Maximal degree in co-relation 5688. Up to 711 conditions per place. [2021-12-06 18:29:45,291 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 67 selfloop transitions, 4 changer transitions 44/264 dead transitions. [2021-12-06 18:29:45,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 264 transitions, 2134 flow [2021-12-06 18:29:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:29:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 18:29:45,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2778 transitions. [2021-12-06 18:29:45,293 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602627257799671 [2021-12-06 18:29:45,293 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2778 transitions. [2021-12-06 18:29:45,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2778 transitions. [2021-12-06 18:29:45,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:45,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2778 transitions. [2021-12-06 18:29:45,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.28571428571428) internal successors, (2778), 21 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:45,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:45,297 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:45,297 INFO L186 Difference]: Start difference. First operand has 333 places, 243 transitions, 1714 flow. Second operand 21 states and 2778 transitions. [2021-12-06 18:29:45,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 264 transitions, 2134 flow [2021-12-06 18:29:45,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 264 transitions, 2013 flow, removed 28 selfloop flow, removed 23 redundant places. [2021-12-06 18:29:45,336 INFO L242 Difference]: Finished difference. Result has 315 places, 216 transitions, 1261 flow [2021-12-06 18:29:45,336 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1261, PETRI_PLACES=315, PETRI_TRANSITIONS=216} [2021-12-06 18:29:45,336 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 158 predicate places. [2021-12-06 18:29:45,336 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 216 transitions, 1261 flow [2021-12-06 18:29:45,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:45,337 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:45,337 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] [2021-12-06 18:29:45,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 18:29:45,337 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:45,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:45,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1867892242, now seen corresponding path program 23 times [2021-12-06 18:29:45,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:45,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463786221] [2021-12-06 18:29:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:45,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:45,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:45,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463786221] [2021-12-06 18:29:45,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463786221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:45,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:45,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:45,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068595868] [2021-12-06 18:29:45,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:45,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:45,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:45,420 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:45,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 216 transitions, 1261 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:45,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:45,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:45,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:45,878 INFO L129 PetriNetUnfolder]: 304/1667 cut-off events. [2021-12-06 18:29:45,878 INFO L130 PetriNetUnfolder]: For 8039/8111 co-relation queries the response was YES. [2021-12-06 18:29:45,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 1667 events. 304/1667 cut-off events. For 8039/8111 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12910 event pairs, 225 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 5841. Up to 719 conditions per place. [2021-12-06 18:29:45,892 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 81 selfloop transitions, 23 changer transitions 42/295 dead transitions. [2021-12-06 18:29:45,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 295 transitions, 2433 flow [2021-12-06 18:29:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 18:29:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-06 18:29:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3705 transitions. [2021-12-06 18:29:45,894 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604679802955665 [2021-12-06 18:29:45,894 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3705 transitions. [2021-12-06 18:29:45,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3705 transitions. [2021-12-06 18:29:45,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:45,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3705 transitions. [2021-12-06 18:29:45,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.32142857142858) internal successors, (3705), 28 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:45,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:45,900 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:45,900 INFO L186 Difference]: Start difference. First operand has 315 places, 216 transitions, 1261 flow. Second operand 28 states and 3705 transitions. [2021-12-06 18:29:45,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 295 transitions, 2433 flow [2021-12-06 18:29:45,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 295 transitions, 2284 flow, removed 40 selfloop flow, removed 21 redundant places. [2021-12-06 18:29:45,932 INFO L242 Difference]: Finished difference. Result has 302 places, 229 transitions, 1462 flow [2021-12-06 18:29:45,933 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1462, PETRI_PLACES=302, PETRI_TRANSITIONS=229} [2021-12-06 18:29:45,933 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 145 predicate places. [2021-12-06 18:29:45,933 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 229 transitions, 1462 flow [2021-12-06 18:29:45,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:45,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:45,933 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] [2021-12-06 18:29:45,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 18:29:45,934 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:45,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1891662696, now seen corresponding path program 24 times [2021-12-06 18:29:45,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:45,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307144310] [2021-12-06 18:29:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:45,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:46,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:46,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307144310] [2021-12-06 18:29:46,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307144310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:46,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:46,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:46,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238159941] [2021-12-06 18:29:46,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:46,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:46,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:46,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:46,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:46,001 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:46,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 229 transitions, 1462 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:46,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:46,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:46,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:46,444 INFO L129 PetriNetUnfolder]: 301/1653 cut-off events. [2021-12-06 18:29:46,444 INFO L130 PetriNetUnfolder]: For 8160/8232 co-relation queries the response was YES. [2021-12-06 18:29:46,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5987 conditions, 1653 events. 301/1653 cut-off events. For 8160/8232 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12808 event pairs, 228 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 5894. Up to 717 conditions per place. [2021-12-06 18:29:46,459 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 77 selfloop transitions, 25 changer transitions 42/293 dead transitions. [2021-12-06 18:29:46,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 293 transitions, 2560 flow [2021-12-06 18:29:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 18:29:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-06 18:29:46,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3572 transitions. [2021-12-06 18:29:46,461 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603235419327373 [2021-12-06 18:29:46,461 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3572 transitions. [2021-12-06 18:29:46,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3572 transitions. [2021-12-06 18:29:46,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:46,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3572 transitions. [2021-12-06 18:29:46,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.2962962962963) internal successors, (3572), 27 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:46,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:46,466 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:46,466 INFO L186 Difference]: Start difference. First operand has 302 places, 229 transitions, 1462 flow. Second operand 27 states and 3572 transitions. [2021-12-06 18:29:46,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 293 transitions, 2560 flow [2021-12-06 18:29:46,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 293 transitions, 2398 flow, removed 73 selfloop flow, removed 17 redundant places. [2021-12-06 18:29:46,501 INFO L242 Difference]: Finished difference. Result has 313 places, 233 transitions, 1608 flow [2021-12-06 18:29:46,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1608, PETRI_PLACES=313, PETRI_TRANSITIONS=233} [2021-12-06 18:29:46,501 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 156 predicate places. [2021-12-06 18:29:46,501 INFO L470 AbstractCegarLoop]: Abstraction has has 313 places, 233 transitions, 1608 flow [2021-12-06 18:29:46,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:46,502 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:46,502 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] [2021-12-06 18:29:46,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 18:29:46,502 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:46,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:46,502 INFO L85 PathProgramCache]: Analyzing trace with hash 802245668, now seen corresponding path program 25 times [2021-12-06 18:29:46,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:46,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441494898] [2021-12-06 18:29:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:46,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:46,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:46,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441494898] [2021-12-06 18:29:46,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441494898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:46,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:46,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:46,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000794980] [2021-12-06 18:29:46,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:46,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:46,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:46,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:46,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:46,578 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:46,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 233 transitions, 1608 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:46,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:46,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:46,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:47,030 INFO L129 PetriNetUnfolder]: 296/1647 cut-off events. [2021-12-06 18:29:47,030 INFO L130 PetriNetUnfolder]: For 8851/8923 co-relation queries the response was YES. [2021-12-06 18:29:47,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6047 conditions, 1647 events. 296/1647 cut-off events. For 8851/8923 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12773 event pairs, 223 based on Foata normal form. 1/1586 useless extension candidates. Maximal degree in co-relation 5948. Up to 719 conditions per place. [2021-12-06 18:29:47,044 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 79 selfloop transitions, 27 changer transitions 37/292 dead transitions. [2021-12-06 18:29:47,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 292 transitions, 2659 flow [2021-12-06 18:29:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 18:29:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 18:29:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2021-12-06 18:29:47,047 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2021-12-06 18:29:47,047 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2021-12-06 18:29:47,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2021-12-06 18:29:47,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:47,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2021-12-06 18:29:47,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:47,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:47,051 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:47,051 INFO L186 Difference]: Start difference. First operand has 313 places, 233 transitions, 1608 flow. Second operand 24 states and 3183 transitions. [2021-12-06 18:29:47,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 292 transitions, 2659 flow [2021-12-06 18:29:47,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 292 transitions, 2435 flow, removed 93 selfloop flow, removed 20 redundant places. [2021-12-06 18:29:47,088 INFO L242 Difference]: Finished difference. Result has 312 places, 240 transitions, 1718 flow [2021-12-06 18:29:47,088 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1718, PETRI_PLACES=312, PETRI_TRANSITIONS=240} [2021-12-06 18:29:47,089 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 155 predicate places. [2021-12-06 18:29:47,089 INFO L470 AbstractCegarLoop]: Abstraction has has 312 places, 240 transitions, 1718 flow [2021-12-06 18:29:47,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:47,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:47,089 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] [2021-12-06 18:29:47,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 18:29:47,089 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:47,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash 25809774, now seen corresponding path program 26 times [2021-12-06 18:29:47,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:47,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653104308] [2021-12-06 18:29:47,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:47,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:47,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:47,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653104308] [2021-12-06 18:29:47,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653104308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:47,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:47,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:47,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380973201] [2021-12-06 18:29:47,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:47,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:47,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:47,158 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:47,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 240 transitions, 1718 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:47,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:47,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:47,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:47,595 INFO L129 PetriNetUnfolder]: 305/1669 cut-off events. [2021-12-06 18:29:47,595 INFO L130 PetriNetUnfolder]: For 8134/8206 co-relation queries the response was YES. [2021-12-06 18:29:47,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 1669 events. 305/1669 cut-off events. For 8134/8206 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12962 event pairs, 231 based on Foata normal form. 1/1606 useless extension candidates. Maximal degree in co-relation 6048. Up to 725 conditions per place. [2021-12-06 18:29:47,611 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 76 selfloop transitions, 37 changer transitions 36/298 dead transitions. [2021-12-06 18:29:47,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 298 transitions, 2788 flow [2021-12-06 18:29:47,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 18:29:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-06 18:29:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3050 transitions. [2021-12-06 18:29:47,613 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621189405297352 [2021-12-06 18:29:47,613 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3050 transitions. [2021-12-06 18:29:47,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3050 transitions. [2021-12-06 18:29:47,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:47,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3050 transitions. [2021-12-06 18:29:47,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.6086956521739) internal successors, (3050), 23 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:47,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:47,617 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:47,617 INFO L186 Difference]: Start difference. First operand has 312 places, 240 transitions, 1718 flow. Second operand 23 states and 3050 transitions. [2021-12-06 18:29:47,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 298 transitions, 2788 flow [2021-12-06 18:29:47,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 298 transitions, 2608 flow, removed 73 selfloop flow, removed 13 redundant places. [2021-12-06 18:29:47,655 INFO L242 Difference]: Finished difference. Result has 322 places, 250 transitions, 1926 flow [2021-12-06 18:29:47,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1926, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2021-12-06 18:29:47,656 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2021-12-06 18:29:47,656 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 1926 flow [2021-12-06 18:29:47,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:47,656 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:47,656 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] [2021-12-06 18:29:47,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 18:29:47,657 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:47,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:47,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1822088480, now seen corresponding path program 27 times [2021-12-06 18:29:47,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:47,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475943659] [2021-12-06 18:29:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:47,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:47,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:47,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:47,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475943659] [2021-12-06 18:29:47,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475943659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:47,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:47,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:47,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198135721] [2021-12-06 18:29:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:47,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:47,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:47,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:47,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:47,737 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:47,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 1926 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:47,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:47,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:47,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:48,187 INFO L129 PetriNetUnfolder]: 302/1653 cut-off events. [2021-12-06 18:29:48,187 INFO L130 PetriNetUnfolder]: For 8380/8452 co-relation queries the response was YES. [2021-12-06 18:29:48,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 1653 events. 302/1653 cut-off events. For 8380/8452 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12786 event pairs, 226 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 6073. Up to 723 conditions per place. [2021-12-06 18:29:48,202 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 33 changer transitions 37/304 dead transitions. [2021-12-06 18:29:48,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 304 transitions, 3005 flow [2021-12-06 18:29:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 18:29:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 18:29:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2021-12-06 18:29:48,204 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2021-12-06 18:29:48,204 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2021-12-06 18:29:48,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2021-12-06 18:29:48,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:48,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2021-12-06 18:29:48,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:48,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:48,208 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:48,208 INFO L186 Difference]: Start difference. First operand has 322 places, 250 transitions, 1926 flow. Second operand 24 states and 3183 transitions. [2021-12-06 18:29:48,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 304 transitions, 3005 flow [2021-12-06 18:29:48,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 304 transitions, 2797 flow, removed 74 selfloop flow, removed 15 redundant places. [2021-12-06 18:29:48,247 INFO L242 Difference]: Finished difference. Result has 331 places, 254 transitions, 2023 flow [2021-12-06 18:29:48,247 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2023, PETRI_PLACES=331, PETRI_TRANSITIONS=254} [2021-12-06 18:29:48,247 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2021-12-06 18:29:48,248 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 254 transitions, 2023 flow [2021-12-06 18:29:48,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:48,248 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:48,248 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] [2021-12-06 18:29:48,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 18:29:48,248 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:48,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:48,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1024266032, now seen corresponding path program 28 times [2021-12-06 18:29:48,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:48,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888145000] [2021-12-06 18:29:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:48,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:48,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:48,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:48,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888145000] [2021-12-06 18:29:48,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888145000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:48,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:48,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:48,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783189700] [2021-12-06 18:29:48,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:48,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:48,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:48,314 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:48,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 254 transitions, 2023 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:48,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:48,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:48,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:48,709 INFO L129 PetriNetUnfolder]: 297/1660 cut-off events. [2021-12-06 18:29:48,709 INFO L130 PetriNetUnfolder]: For 7967/8039 co-relation queries the response was YES. [2021-12-06 18:29:48,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6061 conditions, 1660 events. 297/1660 cut-off events. For 7967/8039 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12866 event pairs, 223 based on Foata normal form. 1/1599 useless extension candidates. Maximal degree in co-relation 5957. Up to 725 conditions per place. [2021-12-06 18:29:48,725 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 82 selfloop transitions, 35 changer transitions 32/298 dead transitions. [2021-12-06 18:29:48,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 298 transitions, 2863 flow [2021-12-06 18:29:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:29:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:29:48,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2021-12-06 18:29:48,727 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2021-12-06 18:29:48,727 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2021-12-06 18:29:48,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2021-12-06 18:29:48,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:48,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2021-12-06 18:29:48,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:48,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:48,731 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:48,731 INFO L186 Difference]: Start difference. First operand has 331 places, 254 transitions, 2023 flow. Second operand 20 states and 2661 transitions. [2021-12-06 18:29:48,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 298 transitions, 2863 flow [2021-12-06 18:29:48,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 298 transitions, 2721 flow, removed 56 selfloop flow, removed 12 redundant places. [2021-12-06 18:29:48,767 INFO L242 Difference]: Finished difference. Result has 332 places, 261 transitions, 2146 flow [2021-12-06 18:29:48,768 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2146, PETRI_PLACES=332, PETRI_TRANSITIONS=261} [2021-12-06 18:29:48,768 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 175 predicate places. [2021-12-06 18:29:48,768 INFO L470 AbstractCegarLoop]: Abstraction has has 332 places, 261 transitions, 2146 flow [2021-12-06 18:29:48,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:48,768 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:48,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:29:48,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 18:29:48,769 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:48,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:48,769 INFO L85 PathProgramCache]: Analyzing trace with hash -422218140, now seen corresponding path program 29 times [2021-12-06 18:29:48,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:48,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038902199] [2021-12-06 18:29:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:48,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:48,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:48,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038902199] [2021-12-06 18:29:48,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038902199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:48,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:48,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:48,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66601617] [2021-12-06 18:29:48,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:48,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:48,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:48,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:48,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:48,835 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:48,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 261 transitions, 2146 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:48,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:48,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:48,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:49,275 INFO L129 PetriNetUnfolder]: 300/1672 cut-off events. [2021-12-06 18:29:49,275 INFO L130 PetriNetUnfolder]: For 7401/7473 co-relation queries the response was YES. [2021-12-06 18:29:49,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 1672 events. 300/1672 cut-off events. For 7401/7473 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12989 event pairs, 224 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 5983. Up to 727 conditions per place. [2021-12-06 18:29:49,290 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 78 selfloop transitions, 48 changer transitions 31/306 dead transitions. [2021-12-06 18:29:49,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 306 transitions, 3084 flow [2021-12-06 18:29:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:29:49,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 18:29:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2528 transitions. [2021-12-06 18:29:49,292 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764670296430732 [2021-12-06 18:29:49,292 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2528 transitions. [2021-12-06 18:29:49,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2528 transitions. [2021-12-06 18:29:49,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:49,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2528 transitions. [2021-12-06 18:29:49,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.05263157894737) internal successors, (2528), 19 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:49,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:29:49,296 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:29:49,296 INFO L186 Difference]: Start difference. First operand has 332 places, 261 transitions, 2146 flow. Second operand 19 states and 2528 transitions. [2021-12-06 18:29:49,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 306 transitions, 3084 flow [2021-12-06 18:29:49,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 306 transitions, 2950 flow, removed 45 selfloop flow, removed 8 redundant places. [2021-12-06 18:29:49,334 INFO L242 Difference]: Finished difference. Result has 342 places, 269 transitions, 2339 flow [2021-12-06 18:29:49,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2339, PETRI_PLACES=342, PETRI_TRANSITIONS=269} [2021-12-06 18:29:49,335 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 185 predicate places. [2021-12-06 18:29:49,335 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 269 transitions, 2339 flow [2021-12-06 18:29:49,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:49,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:49,335 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] [2021-12-06 18:29:49,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 18:29:49,335 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1883314836, now seen corresponding path program 30 times [2021-12-06 18:29:49,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:49,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709285980] [2021-12-06 18:29:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:49,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:49,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:49,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709285980] [2021-12-06 18:29:49,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709285980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:49,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:49,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:49,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292146924] [2021-12-06 18:29:49,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:49,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:49,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:49,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:49,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:49,405 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:49,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 269 transitions, 2339 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:49,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:49,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:49,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:49,826 INFO L129 PetriNetUnfolder]: 297/1657 cut-off events. [2021-12-06 18:29:49,826 INFO L130 PetriNetUnfolder]: For 7493/7565 co-relation queries the response was YES. [2021-12-06 18:29:49,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6093 conditions, 1657 events. 297/1657 cut-off events. For 7493/7565 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12925 event pairs, 223 based on Foata normal form. 1/1595 useless extension candidates. Maximal degree in co-relation 5985. Up to 725 conditions per place. [2021-12-06 18:29:49,842 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 44 changer transitions 31/309 dead transitions. [2021-12-06 18:29:49,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 309 transitions, 3209 flow [2021-12-06 18:29:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:29:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:29:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2659 transitions. [2021-12-06 18:29:49,844 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764080459770115 [2021-12-06 18:29:49,844 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2659 transitions. [2021-12-06 18:29:49,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2659 transitions. [2021-12-06 18:29:49,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:49,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2659 transitions. [2021-12-06 18:29:49,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.95) internal successors, (2659), 20 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:49,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:49,847 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:49,847 INFO L186 Difference]: Start difference. First operand has 342 places, 269 transitions, 2339 flow. Second operand 20 states and 2659 transitions. [2021-12-06 18:29:49,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 309 transitions, 3209 flow [2021-12-06 18:29:49,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 309 transitions, 3066 flow, removed 25 selfloop flow, removed 9 redundant places. [2021-12-06 18:29:49,890 INFO L242 Difference]: Finished difference. Result has 353 places, 275 transitions, 2472 flow [2021-12-06 18:29:49,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2472, PETRI_PLACES=353, PETRI_TRANSITIONS=275} [2021-12-06 18:29:49,891 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 196 predicate places. [2021-12-06 18:29:49,891 INFO L470 AbstractCegarLoop]: Abstraction has has 353 places, 275 transitions, 2472 flow [2021-12-06 18:29:49,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:49,891 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:49,891 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] [2021-12-06 18:29:49,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 18:29:49,891 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:49,892 INFO L85 PathProgramCache]: Analyzing trace with hash 75503528, now seen corresponding path program 31 times [2021-12-06 18:29:49,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:49,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720248569] [2021-12-06 18:29:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:49,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:49,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:49,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720248569] [2021-12-06 18:29:49,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720248569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:49,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:49,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:49,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760909451] [2021-12-06 18:29:49,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:49,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:49,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:49,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:49,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:49,966 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:49,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 275 transitions, 2472 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:49,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:49,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:49,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:50,427 INFO L129 PetriNetUnfolder]: 294/1662 cut-off events. [2021-12-06 18:29:50,427 INFO L130 PetriNetUnfolder]: For 7600/7672 co-relation queries the response was YES. [2021-12-06 18:29:50,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 1662 events. 294/1662 cut-off events. For 7600/7672 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13018 event pairs, 220 based on Foata normal form. 1/1600 useless extension candidates. Maximal degree in co-relation 5979. Up to 723 conditions per place. [2021-12-06 18:29:50,443 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 38 changer transitions 32/314 dead transitions. [2021-12-06 18:29:50,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 314 transitions, 3349 flow [2021-12-06 18:29:50,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:29:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:29:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2021-12-06 18:29:50,445 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2021-12-06 18:29:50,445 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2021-12-06 18:29:50,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2021-12-06 18:29:50,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:50,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2021-12-06 18:29:50,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:50,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:50,449 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:50,449 INFO L186 Difference]: Start difference. First operand has 353 places, 275 transitions, 2472 flow. Second operand 20 states and 2661 transitions. [2021-12-06 18:29:50,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 314 transitions, 3349 flow [2021-12-06 18:29:50,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 314 transitions, 3233 flow, removed 29 selfloop flow, removed 8 redundant places. [2021-12-06 18:29:50,495 INFO L242 Difference]: Finished difference. Result has 363 places, 279 transitions, 2566 flow [2021-12-06 18:29:50,495 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2566, PETRI_PLACES=363, PETRI_TRANSITIONS=279} [2021-12-06 18:29:50,496 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 206 predicate places. [2021-12-06 18:29:50,496 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 279 transitions, 2566 flow [2021-12-06 18:29:50,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:50,496 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:50,496 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] [2021-12-06 18:29:50,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 18:29:50,496 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:50,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2047896920, now seen corresponding path program 32 times [2021-12-06 18:29:50,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:50,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922011155] [2021-12-06 18:29:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:50,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:50,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:50,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922011155] [2021-12-06 18:29:50,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922011155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:50,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:50,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:50,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916933695] [2021-12-06 18:29:50,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:50,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:50,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:50,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:50,566 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:50,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 279 transitions, 2566 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:50,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:50,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:50,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:50,985 INFO L129 PetriNetUnfolder]: 286/1646 cut-off events. [2021-12-06 18:29:50,985 INFO L130 PetriNetUnfolder]: For 7315/7387 co-relation queries the response was YES. [2021-12-06 18:29:50,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5929 conditions, 1646 events. 286/1646 cut-off events. For 7315/7387 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12842 event pairs, 219 based on Foata normal form. 1/1585 useless extension candidates. Maximal degree in co-relation 5812. Up to 718 conditions per place. [2021-12-06 18:29:51,002 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 20 changer transitions 47/304 dead transitions. [2021-12-06 18:29:51,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 304 transitions, 3112 flow [2021-12-06 18:29:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:29:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 18:29:51,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2530 transitions. [2021-12-06 18:29:51,004 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652752571082879 [2021-12-06 18:29:51,004 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2530 transitions. [2021-12-06 18:29:51,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2530 transitions. [2021-12-06 18:29:51,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:51,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2530 transitions. [2021-12-06 18:29:51,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.1578947368421) internal successors, (2530), 19 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:51,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:29:51,007 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:29:51,007 INFO L186 Difference]: Start difference. First operand has 363 places, 279 transitions, 2566 flow. Second operand 19 states and 2530 transitions. [2021-12-06 18:29:51,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 304 transitions, 3112 flow [2021-12-06 18:29:51,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 304 transitions, 3009 flow, removed 33 selfloop flow, removed 7 redundant places. [2021-12-06 18:29:51,056 INFO L242 Difference]: Finished difference. Result has 369 places, 255 transitions, 2103 flow [2021-12-06 18:29:51,056 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2103, PETRI_PLACES=369, PETRI_TRANSITIONS=255} [2021-12-06 18:29:51,056 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 212 predicate places. [2021-12-06 18:29:51,056 INFO L470 AbstractCegarLoop]: Abstraction has has 369 places, 255 transitions, 2103 flow [2021-12-06 18:29:51,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:51,057 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:51,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:29:51,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-06 18:29:51,057 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:51,057 INFO L85 PathProgramCache]: Analyzing trace with hash 673875722, now seen corresponding path program 33 times [2021-12-06 18:29:51,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:51,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609430495] [2021-12-06 18:29:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:51,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:51,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:51,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609430495] [2021-12-06 18:29:51,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609430495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:51,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:51,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:51,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056823572] [2021-12-06 18:29:51,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:51,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:51,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:51,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:51,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:51,130 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:51,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 255 transitions, 2103 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:51,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:51,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:51,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:51,577 INFO L129 PetriNetUnfolder]: 282/1625 cut-off events. [2021-12-06 18:29:51,577 INFO L130 PetriNetUnfolder]: For 6687/6759 co-relation queries the response was YES. [2021-12-06 18:29:51,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 1625 events. 282/1625 cut-off events. For 6687/6759 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12617 event pairs, 220 based on Foata normal form. 1/1563 useless extension candidates. Maximal degree in co-relation 5573. Up to 716 conditions per place. [2021-12-06 18:29:51,593 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 76 selfloop transitions, 23 changer transitions 41/289 dead transitions. [2021-12-06 18:29:51,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 289 transitions, 2804 flow [2021-12-06 18:29:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:29:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 18:29:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2788 transitions. [2021-12-06 18:29:51,595 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629994526546251 [2021-12-06 18:29:51,595 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2788 transitions. [2021-12-06 18:29:51,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2788 transitions. [2021-12-06 18:29:51,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:51,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2788 transitions. [2021-12-06 18:29:51,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.76190476190476) internal successors, (2788), 21 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:51,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:51,599 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:51,599 INFO L186 Difference]: Start difference. First operand has 369 places, 255 transitions, 2103 flow. Second operand 21 states and 2788 transitions. [2021-12-06 18:29:51,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 289 transitions, 2804 flow [2021-12-06 18:29:51,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 289 transitions, 2592 flow, removed 31 selfloop flow, removed 24 redundant places. [2021-12-06 18:29:51,639 INFO L242 Difference]: Finished difference. Result has 345 places, 246 transitions, 1851 flow [2021-12-06 18:29:51,639 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1851, PETRI_PLACES=345, PETRI_TRANSITIONS=246} [2021-12-06 18:29:51,640 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2021-12-06 18:29:51,640 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 246 transitions, 1851 flow [2021-12-06 18:29:51,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:51,640 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:51,640 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] [2021-12-06 18:29:51,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-06 18:29:51,640 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:51,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1274527870, now seen corresponding path program 34 times [2021-12-06 18:29:51,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:51,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377854843] [2021-12-06 18:29:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:51,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:51,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:51,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377854843] [2021-12-06 18:29:51,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377854843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:51,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:51,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:51,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360343008] [2021-12-06 18:29:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:51,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:51,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:51,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:51,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:51,706 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:51,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 246 transitions, 1851 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:51,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:51,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:51,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:52,144 INFO L129 PetriNetUnfolder]: 275/1594 cut-off events. [2021-12-06 18:29:52,144 INFO L130 PetriNetUnfolder]: For 5770/5842 co-relation queries the response was YES. [2021-12-06 18:29:52,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5333 conditions, 1594 events. 275/1594 cut-off events. For 5770/5842 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12319 event pairs, 220 based on Foata normal form. 1/1532 useless extension candidates. Maximal degree in co-relation 5223. Up to 712 conditions per place. [2021-12-06 18:29:52,160 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 63 selfloop transitions, 18 changer transitions 42/272 dead transitions. [2021-12-06 18:29:52,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 272 transitions, 2349 flow [2021-12-06 18:29:52,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:29:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 18:29:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2914 transitions. [2021-12-06 18:29:52,162 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612330198537095 [2021-12-06 18:29:52,162 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2914 transitions. [2021-12-06 18:29:52,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2914 transitions. [2021-12-06 18:29:52,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:52,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2914 transitions. [2021-12-06 18:29:52,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.45454545454547) internal successors, (2914), 22 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:52,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:52,166 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:52,166 INFO L186 Difference]: Start difference. First operand has 345 places, 246 transitions, 1851 flow. Second operand 22 states and 2914 transitions. [2021-12-06 18:29:52,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 272 transitions, 2349 flow [2021-12-06 18:29:52,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 272 transitions, 2194 flow, removed 25 selfloop flow, removed 24 redundant places. [2021-12-06 18:29:52,200 INFO L242 Difference]: Finished difference. Result has 331 places, 229 transitions, 1518 flow [2021-12-06 18:29:52,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1518, PETRI_PLACES=331, PETRI_TRANSITIONS=229} [2021-12-06 18:29:52,201 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2021-12-06 18:29:52,201 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 229 transitions, 1518 flow [2021-12-06 18:29:52,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:52,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:52,201 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] [2021-12-06 18:29:52,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-06 18:29:52,202 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:52,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1378785850, now seen corresponding path program 35 times [2021-12-06 18:29:52,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:52,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796416946] [2021-12-06 18:29:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:52,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:52,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:52,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796416946] [2021-12-06 18:29:52,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796416946] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:52,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:52,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:52,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900842484] [2021-12-06 18:29:52,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:52,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:52,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:52,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:52,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:52,272 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:52,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 229 transitions, 1518 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:52,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:52,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:52,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:52,685 INFO L129 PetriNetUnfolder]: 263/1515 cut-off events. [2021-12-06 18:29:52,685 INFO L130 PetriNetUnfolder]: For 5066/5138 co-relation queries the response was YES. [2021-12-06 18:29:52,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 1515 events. 263/1515 cut-off events. For 5066/5138 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11532 event pairs, 218 based on Foata normal form. 1/1455 useless extension candidates. Maximal degree in co-relation 4814. Up to 690 conditions per place. [2021-12-06 18:29:52,698 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 51 selfloop transitions, 2 changer transitions 51/249 dead transitions. [2021-12-06 18:29:52,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 249 transitions, 1886 flow [2021-12-06 18:29:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:29:52,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:29:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2021-12-06 18:29:52,700 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2021-12-06 18:29:52,700 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2021-12-06 18:29:52,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2021-12-06 18:29:52,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:52,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2021-12-06 18:29:52,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:52,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:52,704 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:52,704 INFO L186 Difference]: Start difference. First operand has 331 places, 229 transitions, 1518 flow. Second operand 20 states and 2645 transitions. [2021-12-06 18:29:52,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 249 transitions, 1886 flow [2021-12-06 18:29:52,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 249 transitions, 1754 flow, removed 26 selfloop flow, removed 25 redundant places. [2021-12-06 18:29:52,730 INFO L242 Difference]: Finished difference. Result has 306 places, 198 transitions, 1011 flow [2021-12-06 18:29:52,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1011, PETRI_PLACES=306, PETRI_TRANSITIONS=198} [2021-12-06 18:29:52,730 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2021-12-06 18:29:52,730 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 198 transitions, 1011 flow [2021-12-06 18:29:52,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:52,731 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:52,731 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] [2021-12-06 18:29:52,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-06 18:29:52,731 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:52,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1278179584, now seen corresponding path program 1 times [2021-12-06 18:29:52,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:52,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403914815] [2021-12-06 18:29:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:52,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:52,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:52,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403914815] [2021-12-06 18:29:52,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403914815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:52,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:52,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:52,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483526637] [2021-12-06 18:29:52,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:52,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:52,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:52,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:52,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:52,790 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:52,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 198 transitions, 1011 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:52,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:52,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:52,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:53,184 INFO L129 PetriNetUnfolder]: 327/1614 cut-off events. [2021-12-06 18:29:53,184 INFO L130 PetriNetUnfolder]: For 5252/5323 co-relation queries the response was YES. [2021-12-06 18:29:53,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5145 conditions, 1614 events. 327/1614 cut-off events. For 5252/5323 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11987 event pairs, 181 based on Foata normal form. 2/1544 useless extension candidates. Maximal degree in co-relation 5057. Up to 597 conditions per place. [2021-12-06 18:29:53,198 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 80 selfloop transitions, 14 changer transitions 32/272 dead transitions. [2021-12-06 18:29:53,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 272 transitions, 1942 flow [2021-12-06 18:29:53,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:29:53,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 18:29:53,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2021-12-06 18:29:53,200 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2021-12-06 18:29:53,200 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2021-12-06 18:29:53,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2021-12-06 18:29:53,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:53,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2021-12-06 18:29:53,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:53,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:53,204 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:53,204 INFO L186 Difference]: Start difference. First operand has 306 places, 198 transitions, 1011 flow. Second operand 22 states and 2926 transitions. [2021-12-06 18:29:53,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 272 transitions, 1942 flow [2021-12-06 18:29:53,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 272 transitions, 1870 flow, removed 24 selfloop flow, removed 27 redundant places. [2021-12-06 18:29:53,223 INFO L242 Difference]: Finished difference. Result has 278 places, 211 transitions, 1151 flow [2021-12-06 18:29:53,224 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1151, PETRI_PLACES=278, PETRI_TRANSITIONS=211} [2021-12-06 18:29:53,224 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 121 predicate places. [2021-12-06 18:29:53,224 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 211 transitions, 1151 flow [2021-12-06 18:29:53,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:53,224 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:53,224 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] [2021-12-06 18:29:53,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-06 18:29:53,224 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:53,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:53,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1783627810, now seen corresponding path program 2 times [2021-12-06 18:29:53,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:53,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083658278] [2021-12-06 18:29:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:53,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:53,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:53,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083658278] [2021-12-06 18:29:53,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083658278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:53,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:53,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:53,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568729540] [2021-12-06 18:29:53,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:53,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:53,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:53,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:53,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:53,281 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:53,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 211 transitions, 1151 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:53,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:53,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:53,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:53,709 INFO L129 PetriNetUnfolder]: 323/1608 cut-off events. [2021-12-06 18:29:53,709 INFO L130 PetriNetUnfolder]: For 11051/11116 co-relation queries the response was YES. [2021-12-06 18:29:53,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 1608 events. 323/1608 cut-off events. For 11051/11116 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11984 event pairs, 170 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 6215. Up to 542 conditions per place. [2021-12-06 18:29:53,722 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 122 selfloop transitions, 12 changer transitions 46/326 dead transitions. [2021-12-06 18:29:53,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 326 transitions, 2691 flow [2021-12-06 18:29:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 18:29:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-06 18:29:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4111 transitions. [2021-12-06 18:29:53,724 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621431219873934 [2021-12-06 18:29:53,724 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4111 transitions. [2021-12-06 18:29:53,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4111 transitions. [2021-12-06 18:29:53,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:53,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4111 transitions. [2021-12-06 18:29:53,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.61290322580646) internal successors, (4111), 31 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:53,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:53,729 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:53,729 INFO L186 Difference]: Start difference. First operand has 278 places, 211 transitions, 1151 flow. Second operand 31 states and 4111 transitions. [2021-12-06 18:29:53,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 326 transitions, 2691 flow [2021-12-06 18:29:53,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 326 transitions, 2253 flow, removed 219 selfloop flow, removed 14 redundant places. [2021-12-06 18:29:53,757 INFO L242 Difference]: Finished difference. Result has 307 places, 214 transitions, 1196 flow [2021-12-06 18:29:53,757 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1196, PETRI_PLACES=307, PETRI_TRANSITIONS=214} [2021-12-06 18:29:53,757 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 150 predicate places. [2021-12-06 18:29:53,757 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 214 transitions, 1196 flow [2021-12-06 18:29:53,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:53,757 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:53,757 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] [2021-12-06 18:29:53,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-06 18:29:53,758 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:53,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:53,758 INFO L85 PathProgramCache]: Analyzing trace with hash -758953314, now seen corresponding path program 3 times [2021-12-06 18:29:53,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:53,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357738520] [2021-12-06 18:29:53,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:53,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:53,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:53,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357738520] [2021-12-06 18:29:53,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357738520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:53,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:53,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:53,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459089130] [2021-12-06 18:29:53,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:53,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:53,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:53,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:53,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:53,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:53,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 214 transitions, 1196 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:53,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:53,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:53,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:54,312 INFO L129 PetriNetUnfolder]: 334/1742 cut-off events. [2021-12-06 18:29:54,312 INFO L130 PetriNetUnfolder]: For 10613/10678 co-relation queries the response was YES. [2021-12-06 18:29:54,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 1742 events. 334/1742 cut-off events. For 10613/10678 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13342 event pairs, 157 based on Foata normal form. 2/1688 useless extension candidates. Maximal degree in co-relation 6472. Up to 540 conditions per place. [2021-12-06 18:29:54,328 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 148 selfloop transitions, 10 changer transitions 46/350 dead transitions. [2021-12-06 18:29:54,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 350 transitions, 3074 flow [2021-12-06 18:29:54,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 18:29:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-06 18:29:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2021-12-06 18:29:54,331 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2021-12-06 18:29:54,331 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2021-12-06 18:29:54,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2021-12-06 18:29:54,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:54,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2021-12-06 18:29:54,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:54,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:54,336 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:54,336 INFO L186 Difference]: Start difference. First operand has 307 places, 214 transitions, 1196 flow. Second operand 30 states and 3982 transitions. [2021-12-06 18:29:54,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 350 transitions, 3074 flow [2021-12-06 18:29:54,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 350 transitions, 2790 flow, removed 120 selfloop flow, removed 21 redundant places. [2021-12-06 18:29:54,370 INFO L242 Difference]: Finished difference. Result has 321 places, 218 transitions, 1296 flow [2021-12-06 18:29:54,370 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1296, PETRI_PLACES=321, PETRI_TRANSITIONS=218} [2021-12-06 18:29:54,371 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 164 predicate places. [2021-12-06 18:29:54,371 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 218 transitions, 1296 flow [2021-12-06 18:29:54,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:54,371 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:54,371 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:29:54,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-06 18:29:54,371 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1874127164, now seen corresponding path program 4 times [2021-12-06 18:29:54,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:54,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919816287] [2021-12-06 18:29:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:54,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:54,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:54,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919816287] [2021-12-06 18:29:54,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919816287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:54,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:54,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:54,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336763348] [2021-12-06 18:29:54,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:54,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:54,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:54,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:54,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:54,444 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:54,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 218 transitions, 1296 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:54,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:54,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:54,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:54,863 INFO L129 PetriNetUnfolder]: 319/1623 cut-off events. [2021-12-06 18:29:54,863 INFO L130 PetriNetUnfolder]: For 14413/14478 co-relation queries the response was YES. [2021-12-06 18:29:54,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6952 conditions, 1623 events. 319/1623 cut-off events. For 14413/14478 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12162 event pairs, 194 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 6847. Up to 653 conditions per place. [2021-12-06 18:29:54,878 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 22 changer transitions 23/287 dead transitions. [2021-12-06 18:29:54,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 287 transitions, 2562 flow [2021-12-06 18:29:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:29:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 18:29:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2021-12-06 18:29:54,880 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2021-12-06 18:29:54,880 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2021-12-06 18:29:54,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2021-12-06 18:29:54,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:54,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2021-12-06 18:29:54,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:54,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:29:54,883 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:29:54,883 INFO L186 Difference]: Start difference. First operand has 321 places, 218 transitions, 1296 flow. Second operand 19 states and 2529 transitions. [2021-12-06 18:29:54,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 287 transitions, 2562 flow [2021-12-06 18:29:54,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 287 transitions, 2280 flow, removed 140 selfloop flow, removed 21 redundant places. [2021-12-06 18:29:54,921 INFO L242 Difference]: Finished difference. Result has 309 places, 232 transitions, 1515 flow [2021-12-06 18:29:54,922 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1515, PETRI_PLACES=309, PETRI_TRANSITIONS=232} [2021-12-06 18:29:54,922 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 152 predicate places. [2021-12-06 18:29:54,922 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 232 transitions, 1515 flow [2021-12-06 18:29:54,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:54,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:54,922 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] [2021-12-06 18:29:54,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-06 18:29:54,922 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:54,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:54,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1190615182, now seen corresponding path program 5 times [2021-12-06 18:29:54,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:54,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531928152] [2021-12-06 18:29:54,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:54,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:54,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:54,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531928152] [2021-12-06 18:29:54,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531928152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:54,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:54,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:54,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258969769] [2021-12-06 18:29:54,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:54,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:54,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:54,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:54,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:54,986 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:54,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 232 transitions, 1515 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:54,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:54,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:54,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:55,475 INFO L129 PetriNetUnfolder]: 358/1746 cut-off events. [2021-12-06 18:29:55,476 INFO L130 PetriNetUnfolder]: For 11884/11952 co-relation queries the response was YES. [2021-12-06 18:29:55,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7334 conditions, 1746 events. 358/1746 cut-off events. For 11884/11952 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13351 event pairs, 199 based on Foata normal form. 2/1681 useless extension candidates. Maximal degree in co-relation 7235. Up to 604 conditions per place. [2021-12-06 18:29:55,492 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 19 changer transitions 40/315 dead transitions. [2021-12-06 18:29:55,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 315 transitions, 3032 flow [2021-12-06 18:29:55,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 18:29:55,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-06 18:29:55,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3449 transitions. [2021-12-06 18:29:55,494 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623784261715296 [2021-12-06 18:29:55,495 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3449 transitions. [2021-12-06 18:29:55,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3449 transitions. [2021-12-06 18:29:55,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:55,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3449 transitions. [2021-12-06 18:29:55,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.65384615384616) internal successors, (3449), 26 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:55,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:55,499 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:55,499 INFO L186 Difference]: Start difference. First operand has 309 places, 232 transitions, 1515 flow. Second operand 26 states and 3449 transitions. [2021-12-06 18:29:55,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 315 transitions, 3032 flow [2021-12-06 18:29:55,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 315 transitions, 2825 flow, removed 80 selfloop flow, removed 8 redundant places. [2021-12-06 18:29:55,539 INFO L242 Difference]: Finished difference. Result has 341 places, 242 transitions, 1659 flow [2021-12-06 18:29:55,539 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1659, PETRI_PLACES=341, PETRI_TRANSITIONS=242} [2021-12-06 18:29:55,539 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2021-12-06 18:29:55,540 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 242 transitions, 1659 flow [2021-12-06 18:29:55,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:55,540 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:55,540 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] [2021-12-06 18:29:55,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-06 18:29:55,540 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:55,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1360729800, now seen corresponding path program 6 times [2021-12-06 18:29:55,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:55,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221006821] [2021-12-06 18:29:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:55,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:55,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:55,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221006821] [2021-12-06 18:29:55,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221006821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:55,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:55,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:55,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298839876] [2021-12-06 18:29:55,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:55,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:55,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:55,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:55,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:55,621 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:55,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 242 transitions, 1659 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:55,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:55,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:55,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:56,110 INFO L129 PetriNetUnfolder]: 357/1765 cut-off events. [2021-12-06 18:29:56,110 INFO L130 PetriNetUnfolder]: For 17289/17376 co-relation queries the response was YES. [2021-12-06 18:29:56,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7995 conditions, 1765 events. 357/1765 cut-off events. For 17289/17376 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13483 event pairs, 226 based on Foata normal form. 3/1695 useless extension candidates. Maximal degree in co-relation 7879. Up to 683 conditions per place. [2021-12-06 18:29:56,129 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 113 selfloop transitions, 27 changer transitions 33/319 dead transitions. [2021-12-06 18:29:56,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 319 transitions, 3487 flow [2021-12-06 18:29:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 18:29:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-06 18:29:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3312 transitions. [2021-12-06 18:29:56,131 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613793103448275 [2021-12-06 18:29:56,131 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3312 transitions. [2021-12-06 18:29:56,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3312 transitions. [2021-12-06 18:29:56,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:56,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3312 transitions. [2021-12-06 18:29:56,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.48) internal successors, (3312), 25 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:56,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:56,135 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:56,135 INFO L186 Difference]: Start difference. First operand has 341 places, 242 transitions, 1659 flow. Second operand 25 states and 3312 transitions. [2021-12-06 18:29:56,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 319 transitions, 3487 flow [2021-12-06 18:29:56,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 319 transitions, 3026 flow, removed 223 selfloop flow, removed 18 redundant places. [2021-12-06 18:29:56,189 INFO L242 Difference]: Finished difference. Result has 351 places, 256 transitions, 1945 flow [2021-12-06 18:29:56,189 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1945, PETRI_PLACES=351, PETRI_TRANSITIONS=256} [2021-12-06 18:29:56,190 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 194 predicate places. [2021-12-06 18:29:56,190 INFO L470 AbstractCegarLoop]: Abstraction has has 351 places, 256 transitions, 1945 flow [2021-12-06 18:29:56,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:56,190 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:56,190 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] [2021-12-06 18:29:56,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-06 18:29:56,191 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:56,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:56,191 INFO L85 PathProgramCache]: Analyzing trace with hash 32559886, now seen corresponding path program 7 times [2021-12-06 18:29:56,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:56,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571104118] [2021-12-06 18:29:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:56,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:56,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:56,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571104118] [2021-12-06 18:29:56,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571104118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:56,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:56,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:56,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178132796] [2021-12-06 18:29:56,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:56,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:56,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:56,262 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:56,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 256 transitions, 1945 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:56,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:56,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:56,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:56,806 INFO L129 PetriNetUnfolder]: 375/1819 cut-off events. [2021-12-06 18:29:56,806 INFO L130 PetriNetUnfolder]: For 17908/17998 co-relation queries the response was YES. [2021-12-06 18:29:56,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8446 conditions, 1819 events. 375/1819 cut-off events. For 17908/17998 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 14062 event pairs, 215 based on Foata normal form. 10/1756 useless extension candidates. Maximal degree in co-relation 8325. Up to 686 conditions per place. [2021-12-06 18:29:56,826 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 124 selfloop transitions, 35 changer transitions 46/351 dead transitions. [2021-12-06 18:29:56,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 351 transitions, 3808 flow [2021-12-06 18:29:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 18:29:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-06 18:29:56,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2021-12-06 18:29:56,829 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2021-12-06 18:29:56,829 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2021-12-06 18:29:56,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2021-12-06 18:29:56,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:56,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2021-12-06 18:29:56,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:56,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:56,833 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:56,834 INFO L186 Difference]: Start difference. First operand has 351 places, 256 transitions, 1945 flow. Second operand 28 states and 3707 transitions. [2021-12-06 18:29:56,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 351 transitions, 3808 flow [2021-12-06 18:29:56,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 351 transitions, 3345 flow, removed 219 selfloop flow, removed 14 redundant places. [2021-12-06 18:29:56,897 INFO L242 Difference]: Finished difference. Result has 370 places, 263 transitions, 2014 flow [2021-12-06 18:29:56,897 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2014, PETRI_PLACES=370, PETRI_TRANSITIONS=263} [2021-12-06 18:29:56,898 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 213 predicate places. [2021-12-06 18:29:56,898 INFO L470 AbstractCegarLoop]: Abstraction has has 370 places, 263 transitions, 2014 flow [2021-12-06 18:29:56,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:56,898 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:56,898 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] [2021-12-06 18:29:56,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-06 18:29:56,898 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:56,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:56,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1770588758, now seen corresponding path program 8 times [2021-12-06 18:29:56,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:56,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178073008] [2021-12-06 18:29:56,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:56,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:56,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:56,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178073008] [2021-12-06 18:29:56,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178073008] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:56,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:56,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:56,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721084851] [2021-12-06 18:29:56,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:56,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:56,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:56,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:56,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:56,969 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:56,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 263 transitions, 2014 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:56,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:56,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:56,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:57,526 INFO L129 PetriNetUnfolder]: 362/1775 cut-off events. [2021-12-06 18:29:57,526 INFO L130 PetriNetUnfolder]: For 15224/15298 co-relation queries the response was YES. [2021-12-06 18:29:57,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8055 conditions, 1775 events. 362/1775 cut-off events. For 15224/15298 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13676 event pairs, 214 based on Foata normal form. 5/1713 useless extension candidates. Maximal degree in co-relation 7926. Up to 679 conditions per place. [2021-12-06 18:29:57,547 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 125 selfloop transitions, 28 changer transitions 42/341 dead transitions. [2021-12-06 18:29:57,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 341 transitions, 3579 flow [2021-12-06 18:29:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 18:29:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-06 18:29:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3580 transitions. [2021-12-06 18:29:57,549 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620263942103023 [2021-12-06 18:29:57,549 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3580 transitions. [2021-12-06 18:29:57,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3580 transitions. [2021-12-06 18:29:57,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:57,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3580 transitions. [2021-12-06 18:29:57,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.59259259259258) internal successors, (3580), 27 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:57,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:57,553 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:57,553 INFO L186 Difference]: Start difference. First operand has 370 places, 263 transitions, 2014 flow. Second operand 27 states and 3580 transitions. [2021-12-06 18:29:57,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 341 transitions, 3579 flow [2021-12-06 18:29:57,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 341 transitions, 3382 flow, removed 79 selfloop flow, removed 21 redundant places. [2021-12-06 18:29:57,615 INFO L242 Difference]: Finished difference. Result has 377 places, 268 transitions, 2173 flow [2021-12-06 18:29:57,615 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2173, PETRI_PLACES=377, PETRI_TRANSITIONS=268} [2021-12-06 18:29:57,616 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 220 predicate places. [2021-12-06 18:29:57,616 INFO L470 AbstractCegarLoop]: Abstraction has has 377 places, 268 transitions, 2173 flow [2021-12-06 18:29:57,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:57,616 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:57,616 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] [2021-12-06 18:29:57,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-06 18:29:57,616 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:57,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:57,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1462652886, now seen corresponding path program 9 times [2021-12-06 18:29:57,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:57,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012246201] [2021-12-06 18:29:57,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:57,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:57,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:57,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012246201] [2021-12-06 18:29:57,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012246201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:57,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:57,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:57,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729267969] [2021-12-06 18:29:57,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:57,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:57,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:57,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:57,687 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:57,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 268 transitions, 2173 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:57,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:57,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:57,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:58,232 INFO L129 PetriNetUnfolder]: 363/1819 cut-off events. [2021-12-06 18:29:58,232 INFO L130 PetriNetUnfolder]: For 16314/16423 co-relation queries the response was YES. [2021-12-06 18:29:58,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8110 conditions, 1819 events. 363/1819 cut-off events. For 16314/16423 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 14095 event pairs, 210 based on Foata normal form. 16/1764 useless extension candidates. Maximal degree in co-relation 7978. Up to 687 conditions per place. [2021-12-06 18:29:58,250 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 122 selfloop transitions, 36 changer transitions 39/343 dead transitions. [2021-12-06 18:29:58,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 343 transitions, 3611 flow [2021-12-06 18:29:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 18:29:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 18:29:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2021-12-06 18:29:58,252 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2021-12-06 18:29:58,252 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2021-12-06 18:29:58,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2021-12-06 18:29:58,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:58,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2021-12-06 18:29:58,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:58,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:58,256 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:58,256 INFO L186 Difference]: Start difference. First operand has 377 places, 268 transitions, 2173 flow. Second operand 24 states and 3183 transitions. [2021-12-06 18:29:58,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 343 transitions, 3611 flow [2021-12-06 18:29:58,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 343 transitions, 3385 flow, removed 81 selfloop flow, removed 21 redundant places. [2021-12-06 18:29:58,316 INFO L242 Difference]: Finished difference. Result has 374 places, 268 transitions, 2181 flow [2021-12-06 18:29:58,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2181, PETRI_PLACES=374, PETRI_TRANSITIONS=268} [2021-12-06 18:29:58,317 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 217 predicate places. [2021-12-06 18:29:58,317 INFO L470 AbstractCegarLoop]: Abstraction has has 374 places, 268 transitions, 2181 flow [2021-12-06 18:29:58,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:58,317 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:58,317 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] [2021-12-06 18:29:58,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-06 18:29:58,318 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:58,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:58,318 INFO L85 PathProgramCache]: Analyzing trace with hash -794662840, now seen corresponding path program 10 times [2021-12-06 18:29:58,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:58,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544823951] [2021-12-06 18:29:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:58,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:58,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:58,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544823951] [2021-12-06 18:29:58,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544823951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:58,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:58,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:58,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175988913] [2021-12-06 18:29:58,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:58,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:58,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:58,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:58,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:58,388 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:58,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 268 transitions, 2181 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:58,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:58,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:58,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:58,867 INFO L129 PetriNetUnfolder]: 343/1724 cut-off events. [2021-12-06 18:29:58,867 INFO L130 PetriNetUnfolder]: For 14644/14749 co-relation queries the response was YES. [2021-12-06 18:29:58,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7583 conditions, 1724 events. 343/1724 cut-off events. For 14644/14749 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13133 event pairs, 202 based on Foata normal form. 10/1665 useless extension candidates. Maximal degree in co-relation 7456. Up to 679 conditions per place. [2021-12-06 18:29:58,887 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 20 changer transitions 36/314 dead transitions. [2021-12-06 18:29:58,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 314 transitions, 3105 flow [2021-12-06 18:29:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:29:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:29:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2651 transitions. [2021-12-06 18:29:58,889 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617816091954023 [2021-12-06 18:29:58,889 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2651 transitions. [2021-12-06 18:29:58,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2651 transitions. [2021-12-06 18:29:58,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:58,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2651 transitions. [2021-12-06 18:29:58,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.55) internal successors, (2651), 20 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:58,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:58,892 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:58,893 INFO L186 Difference]: Start difference. First operand has 374 places, 268 transitions, 2181 flow. Second operand 20 states and 2651 transitions. [2021-12-06 18:29:58,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 314 transitions, 3105 flow [2021-12-06 18:29:58,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 314 transitions, 2967 flow, removed 45 selfloop flow, removed 17 redundant places. [2021-12-06 18:29:58,948 INFO L242 Difference]: Finished difference. Result has 368 places, 247 transitions, 1830 flow [2021-12-06 18:29:58,949 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1830, PETRI_PLACES=368, PETRI_TRANSITIONS=247} [2021-12-06 18:29:58,949 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 211 predicate places. [2021-12-06 18:29:58,949 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 247 transitions, 1830 flow [2021-12-06 18:29:58,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:58,949 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:58,949 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] [2021-12-06 18:29:58,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-06 18:29:58,950 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:58,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:58,950 INFO L85 PathProgramCache]: Analyzing trace with hash -777947780, now seen corresponding path program 11 times [2021-12-06 18:29:58,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:58,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830783905] [2021-12-06 18:29:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:58,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:59,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:59,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830783905] [2021-12-06 18:29:59,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830783905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:59,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:59,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:59,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969707081] [2021-12-06 18:29:59,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:59,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:59,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:59,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:59,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:59,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:59,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 247 transitions, 1830 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:59,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:59,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:59,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:29:59,515 INFO L129 PetriNetUnfolder]: 345/1726 cut-off events. [2021-12-06 18:29:59,516 INFO L130 PetriNetUnfolder]: For 14520/14607 co-relation queries the response was YES. [2021-12-06 18:29:59,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7613 conditions, 1726 events. 345/1726 cut-off events. For 14520/14607 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13127 event pairs, 231 based on Foata normal form. 4/1657 useless extension candidates. Maximal degree in co-relation 7491. Up to 679 conditions per place. [2021-12-06 18:29:59,534 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 30 changer transitions 27/303 dead transitions. [2021-12-06 18:29:59,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 303 transitions, 3047 flow [2021-12-06 18:29:59,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:29:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 18:29:59,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2021-12-06 18:29:59,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2021-12-06 18:29:59,536 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2021-12-06 18:29:59,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2021-12-06 18:29:59,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:29:59,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2021-12-06 18:29:59,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:59,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:59,539 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:59,540 INFO L186 Difference]: Start difference. First operand has 368 places, 247 transitions, 1830 flow. Second operand 22 states and 2919 transitions. [2021-12-06 18:29:59,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 303 transitions, 3047 flow [2021-12-06 18:29:59,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 303 transitions, 2782 flow, removed 48 selfloop flow, removed 22 redundant places. [2021-12-06 18:29:59,586 INFO L242 Difference]: Finished difference. Result has 348 places, 259 transitions, 2021 flow [2021-12-06 18:29:59,586 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2021, PETRI_PLACES=348, PETRI_TRANSITIONS=259} [2021-12-06 18:29:59,587 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2021-12-06 18:29:59,587 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 259 transitions, 2021 flow [2021-12-06 18:29:59,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:59,587 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:29:59,587 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] [2021-12-06 18:29:59,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-06 18:29:59,587 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:29:59,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1480501564, now seen corresponding path program 12 times [2021-12-06 18:29:59,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:59,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492821580] [2021-12-06 18:29:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:59,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:59,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:59,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492821580] [2021-12-06 18:29:59,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492821580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:59,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:59,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:29:59,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026979642] [2021-12-06 18:29:59,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:59,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:29:59,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:59,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:29:59,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:29:59,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:29:59,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 259 transitions, 2021 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:29:59,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:29:59,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:29:59,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:00,125 INFO L129 PetriNetUnfolder]: 344/1703 cut-off events. [2021-12-06 18:30:00,126 INFO L130 PetriNetUnfolder]: For 12576/12650 co-relation queries the response was YES. [2021-12-06 18:30:00,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7475 conditions, 1703 events. 344/1703 cut-off events. For 12576/12650 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12881 event pairs, 215 based on Foata normal form. 4/1639 useless extension candidates. Maximal degree in co-relation 7359. Up to 677 conditions per place. [2021-12-06 18:30:00,144 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 38 changer transitions 27/317 dead transitions. [2021-12-06 18:30:00,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 317 transitions, 3256 flow [2021-12-06 18:30:00,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:30:00,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:30:00,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2662 transitions. [2021-12-06 18:30:00,146 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649425287356322 [2021-12-06 18:30:00,146 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2662 transitions. [2021-12-06 18:30:00,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2662 transitions. [2021-12-06 18:30:00,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:00,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2662 transitions. [2021-12-06 18:30:00,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.1) internal successors, (2662), 20 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,149 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,149 INFO L186 Difference]: Start difference. First operand has 348 places, 259 transitions, 2021 flow. Second operand 20 states and 2662 transitions. [2021-12-06 18:30:00,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 317 transitions, 3256 flow [2021-12-06 18:30:00,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 317 transitions, 3056 flow, removed 92 selfloop flow, removed 5 redundant places. [2021-12-06 18:30:00,200 INFO L242 Difference]: Finished difference. Result has 364 places, 271 transitions, 2237 flow [2021-12-06 18:30:00,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2237, PETRI_PLACES=364, PETRI_TRANSITIONS=271} [2021-12-06 18:30:00,201 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 207 predicate places. [2021-12-06 18:30:00,201 INFO L470 AbstractCegarLoop]: Abstraction has has 364 places, 271 transitions, 2237 flow [2021-12-06 18:30:00,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:00,202 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] [2021-12-06 18:30:00,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-06 18:30:00,202 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1038218676, now seen corresponding path program 13 times [2021-12-06 18:30:00,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:00,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918774407] [2021-12-06 18:30:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:00,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:00,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:00,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918774407] [2021-12-06 18:30:00,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918774407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:00,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:00,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:00,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352064851] [2021-12-06 18:30:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:00,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:00,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:00,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:00,288 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:00,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 271 transitions, 2237 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:00,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:00,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:00,773 INFO L129 PetriNetUnfolder]: 346/1752 cut-off events. [2021-12-06 18:30:00,773 INFO L130 PetriNetUnfolder]: For 13295/13382 co-relation queries the response was YES. [2021-12-06 18:30:00,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 1752 events. 346/1752 cut-off events. For 13295/13382 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13363 event pairs, 229 based on Foata normal form. 4/1683 useless extension candidates. Maximal degree in co-relation 7426. Up to 679 conditions per place. [2021-12-06 18:30:00,792 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 37 changer transitions 29/322 dead transitions. [2021-12-06 18:30:00,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 322 transitions, 3400 flow [2021-12-06 18:30:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:30:00,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 18:30:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2021-12-06 18:30:00,795 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2021-12-06 18:30:00,795 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2021-12-06 18:30:00,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2021-12-06 18:30:00,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:00,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2021-12-06 18:30:00,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,799 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,799 INFO L186 Difference]: Start difference. First operand has 364 places, 271 transitions, 2237 flow. Second operand 21 states and 2792 transitions. [2021-12-06 18:30:00,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 322 transitions, 3400 flow [2021-12-06 18:30:00,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 322 transitions, 3278 flow, removed 37 selfloop flow, removed 8 redundant places. [2021-12-06 18:30:00,854 INFO L242 Difference]: Finished difference. Result has 379 places, 278 transitions, 2418 flow [2021-12-06 18:30:00,855 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2418, PETRI_PLACES=379, PETRI_TRANSITIONS=278} [2021-12-06 18:30:00,855 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 222 predicate places. [2021-12-06 18:30:00,855 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 278 transitions, 2418 flow [2021-12-06 18:30:00,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:00,855 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] [2021-12-06 18:30:00,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-06 18:30:00,855 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:00,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash -94379138, now seen corresponding path program 14 times [2021-12-06 18:30:00,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:00,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818953813] [2021-12-06 18:30:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:00,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:00,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:00,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818953813] [2021-12-06 18:30:00,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818953813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:00,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:00,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:00,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136749522] [2021-12-06 18:30:00,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:00,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:00,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:00,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:00,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:00,929 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:00,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 278 transitions, 2418 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:00,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:00,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:01,468 INFO L129 PetriNetUnfolder]: 351/1747 cut-off events. [2021-12-06 18:30:01,468 INFO L130 PetriNetUnfolder]: For 13730/13802 co-relation queries the response was YES. [2021-12-06 18:30:01,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7782 conditions, 1747 events. 351/1747 cut-off events. For 13730/13802 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13432 event pairs, 214 based on Foata normal form. 4/1684 useless extension candidates. Maximal degree in co-relation 7651. Up to 680 conditions per place. [2021-12-06 18:30:01,486 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 114 selfloop transitions, 41 changer transitions 38/339 dead transitions. [2021-12-06 18:30:01,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 339 transitions, 3667 flow [2021-12-06 18:30:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 18:30:01,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 18:30:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2021-12-06 18:30:01,488 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2021-12-06 18:30:01,488 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2021-12-06 18:30:01,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2021-12-06 18:30:01,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:01,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2021-12-06 18:30:01,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:01,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:01,493 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:01,493 INFO L186 Difference]: Start difference. First operand has 379 places, 278 transitions, 2418 flow. Second operand 24 states and 3187 transitions. [2021-12-06 18:30:01,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 339 transitions, 3667 flow [2021-12-06 18:30:01,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 339 transitions, 3533 flow, removed 40 selfloop flow, removed 7 redundant places. [2021-12-06 18:30:01,562 INFO L242 Difference]: Finished difference. Result has 400 places, 283 transitions, 2559 flow [2021-12-06 18:30:01,562 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2559, PETRI_PLACES=400, PETRI_TRANSITIONS=283} [2021-12-06 18:30:01,562 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 243 predicate places. [2021-12-06 18:30:01,562 INFO L470 AbstractCegarLoop]: Abstraction has has 400 places, 283 transitions, 2559 flow [2021-12-06 18:30:01,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:01,563 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:01,563 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] [2021-12-06 18:30:01,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-06 18:30:01,563 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:01,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1645913830, now seen corresponding path program 15 times [2021-12-06 18:30:01,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:01,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566526297] [2021-12-06 18:30:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:01,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:01,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:01,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566526297] [2021-12-06 18:30:01,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566526297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:01,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:01,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:01,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790524804] [2021-12-06 18:30:01,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:01,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:01,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:01,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:01,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:01,632 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:01,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 283 transitions, 2559 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:01,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:01,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:01,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:02,145 INFO L129 PetriNetUnfolder]: 346/1748 cut-off events. [2021-12-06 18:30:02,145 INFO L130 PetriNetUnfolder]: For 15071/15143 co-relation queries the response was YES. [2021-12-06 18:30:02,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7860 conditions, 1748 events. 346/1748 cut-off events. For 15071/15143 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13404 event pairs, 208 based on Foata normal form. 4/1685 useless extension candidates. Maximal degree in co-relation 7720. Up to 675 conditions per place. [2021-12-06 18:30:02,168 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 36 changer transitions 43/343 dead transitions. [2021-12-06 18:30:02,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 343 transitions, 3854 flow [2021-12-06 18:30:02,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 18:30:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-06 18:30:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2021-12-06 18:30:02,170 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2021-12-06 18:30:02,170 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2021-12-06 18:30:02,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2021-12-06 18:30:02,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:02,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2021-12-06 18:30:02,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:02,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:02,174 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:02,174 INFO L186 Difference]: Start difference. First operand has 400 places, 283 transitions, 2559 flow. Second operand 23 states and 3056 transitions. [2021-12-06 18:30:02,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 343 transitions, 3854 flow [2021-12-06 18:30:02,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 343 transitions, 3683 flow, removed 56 selfloop flow, removed 15 redundant places. [2021-12-06 18:30:02,247 INFO L242 Difference]: Finished difference. Result has 405 places, 282 transitions, 2561 flow [2021-12-06 18:30:02,247 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2451, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2561, PETRI_PLACES=405, PETRI_TRANSITIONS=282} [2021-12-06 18:30:02,248 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 248 predicate places. [2021-12-06 18:30:02,248 INFO L470 AbstractCegarLoop]: Abstraction has has 405 places, 282 transitions, 2561 flow [2021-12-06 18:30:02,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:02,248 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:02,248 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] [2021-12-06 18:30:02,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-06 18:30:02,248 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:02,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1995123918, now seen corresponding path program 16 times [2021-12-06 18:30:02,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:02,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196559955] [2021-12-06 18:30:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:02,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:02,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:02,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196559955] [2021-12-06 18:30:02,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196559955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:02,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:02,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:02,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394488151] [2021-12-06 18:30:02,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:02,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:02,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:02,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:02,319 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:02,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 282 transitions, 2561 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:02,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:02,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:02,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:02,832 INFO L129 PetriNetUnfolder]: 335/1729 cut-off events. [2021-12-06 18:30:02,832 INFO L130 PetriNetUnfolder]: For 14305/14385 co-relation queries the response was YES. [2021-12-06 18:30:02,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7510 conditions, 1729 events. 335/1729 cut-off events. For 14305/14385 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13171 event pairs, 226 based on Foata normal form. 4/1660 useless extension candidates. Maximal degree in co-relation 7369. Up to 674 conditions per place. [2021-12-06 18:30:02,854 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 25 changer transitions 36/313 dead transitions. [2021-12-06 18:30:02,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 313 transitions, 3273 flow [2021-12-06 18:30:02,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:30:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:30:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2658 transitions. [2021-12-06 18:30:02,856 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637931034482759 [2021-12-06 18:30:02,856 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2658 transitions. [2021-12-06 18:30:02,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2658 transitions. [2021-12-06 18:30:02,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:02,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2658 transitions. [2021-12-06 18:30:02,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.9) internal successors, (2658), 20 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:02,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:02,860 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:02,860 INFO L186 Difference]: Start difference. First operand has 405 places, 282 transitions, 2561 flow. Second operand 20 states and 2658 transitions. [2021-12-06 18:30:02,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 313 transitions, 3273 flow [2021-12-06 18:30:02,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 313 transitions, 3085 flow, removed 38 selfloop flow, removed 21 redundant places. [2021-12-06 18:30:02,932 INFO L242 Difference]: Finished difference. Result has 396 places, 264 transitions, 2163 flow [2021-12-06 18:30:02,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2163, PETRI_PLACES=396, PETRI_TRANSITIONS=264} [2021-12-06 18:30:02,932 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 239 predicate places. [2021-12-06 18:30:02,932 INFO L470 AbstractCegarLoop]: Abstraction has has 396 places, 264 transitions, 2163 flow [2021-12-06 18:30:02,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:02,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:02,933 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] [2021-12-06 18:30:02,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-06 18:30:02,933 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:02,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:02,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1235536464, now seen corresponding path program 17 times [2021-12-06 18:30:02,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:02,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587528272] [2021-12-06 18:30:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:02,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:03,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:03,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587528272] [2021-12-06 18:30:03,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587528272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:03,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:03,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:03,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111519733] [2021-12-06 18:30:03,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:03,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:03,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:03,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:03,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:03,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:03,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 264 transitions, 2163 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:03,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:03,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:03,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:03,482 INFO L129 PetriNetUnfolder]: 323/1662 cut-off events. [2021-12-06 18:30:03,482 INFO L130 PetriNetUnfolder]: For 12889/12961 co-relation queries the response was YES. [2021-12-06 18:30:03,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7157 conditions, 1662 events. 323/1662 cut-off events. For 12889/12961 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12567 event pairs, 210 based on Foata normal form. 4/1598 useless extension candidates. Maximal degree in co-relation 7024. Up to 672 conditions per place. [2021-12-06 18:30:03,502 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 99 selfloop transitions, 21 changer transitions 34/300 dead transitions. [2021-12-06 18:30:03,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 300 transitions, 2936 flow [2021-12-06 18:30:03,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:30:03,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:30:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2021-12-06 18:30:03,504 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2021-12-06 18:30:03,504 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2021-12-06 18:30:03,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2021-12-06 18:30:03,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:03,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2021-12-06 18:30:03,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:03,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:03,507 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:03,508 INFO L186 Difference]: Start difference. First operand has 396 places, 264 transitions, 2163 flow. Second operand 20 states and 2656 transitions. [2021-12-06 18:30:03,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 300 transitions, 2936 flow [2021-12-06 18:30:03,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 300 transitions, 2748 flow, removed 24 selfloop flow, removed 22 redundant places. [2021-12-06 18:30:03,565 INFO L242 Difference]: Finished difference. Result has 376 places, 253 transitions, 1905 flow [2021-12-06 18:30:03,565 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1905, PETRI_PLACES=376, PETRI_TRANSITIONS=253} [2021-12-06 18:30:03,565 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 219 predicate places. [2021-12-06 18:30:03,566 INFO L470 AbstractCegarLoop]: Abstraction has has 376 places, 253 transitions, 1905 flow [2021-12-06 18:30:03,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:03,566 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:03,566 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] [2021-12-06 18:30:03,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-06 18:30:03,566 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:03,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:03,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1227930286, now seen corresponding path program 18 times [2021-12-06 18:30:03,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:03,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413875148] [2021-12-06 18:30:03,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:03,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:03,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:03,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413875148] [2021-12-06 18:30:03,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413875148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:03,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:03,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:03,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880315978] [2021-12-06 18:30:03,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:03,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:03,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:03,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:03,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:03,641 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:03,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 253 transitions, 1905 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:03,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:03,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:03,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:04,093 INFO L129 PetriNetUnfolder]: 307/1599 cut-off events. [2021-12-06 18:30:04,094 INFO L130 PetriNetUnfolder]: For 11550/11622 co-relation queries the response was YES. [2021-12-06 18:30:04,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6687 conditions, 1599 events. 307/1599 cut-off events. For 11550/11622 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12010 event pairs, 202 based on Foata normal form. 4/1538 useless extension candidates. Maximal degree in co-relation 6560. Up to 651 conditions per place. [2021-12-06 18:30:04,112 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 6 changer transitions 38/279 dead transitions. [2021-12-06 18:30:04,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 279 transitions, 2456 flow [2021-12-06 18:30:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:30:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 18:30:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2516 transitions. [2021-12-06 18:30:04,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610405323653963 [2021-12-06 18:30:04,114 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2516 transitions. [2021-12-06 18:30:04,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2516 transitions. [2021-12-06 18:30:04,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:04,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2516 transitions. [2021-12-06 18:30:04,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.42105263157896) internal successors, (2516), 19 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:04,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:30:04,117 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:30:04,117 INFO L186 Difference]: Start difference. First operand has 376 places, 253 transitions, 1905 flow. Second operand 19 states and 2516 transitions. [2021-12-06 18:30:04,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 279 transitions, 2456 flow [2021-12-06 18:30:04,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 279 transitions, 2326 flow, removed 24 selfloop flow, removed 23 redundant places. [2021-12-06 18:30:04,168 INFO L242 Difference]: Finished difference. Result has 357 places, 228 transitions, 1466 flow [2021-12-06 18:30:04,168 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1466, PETRI_PLACES=357, PETRI_TRANSITIONS=228} [2021-12-06 18:30:04,169 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 200 predicate places. [2021-12-06 18:30:04,169 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 228 transitions, 1466 flow [2021-12-06 18:30:04,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:04,169 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:04,169 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] [2021-12-06 18:30:04,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-06 18:30:04,169 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:04,170 INFO L85 PathProgramCache]: Analyzing trace with hash 704008232, now seen corresponding path program 19 times [2021-12-06 18:30:04,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:04,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297717076] [2021-12-06 18:30:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:04,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:04,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:04,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297717076] [2021-12-06 18:30:04,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297717076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:04,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:04,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:04,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906072034] [2021-12-06 18:30:04,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:04,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:04,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:04,231 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:04,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 228 transitions, 1466 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:04,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:04,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:04,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:04,738 INFO L129 PetriNetUnfolder]: 321/1643 cut-off events. [2021-12-06 18:30:04,738 INFO L130 PetriNetUnfolder]: For 11922/11990 co-relation queries the response was YES. [2021-12-06 18:30:04,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 1643 events. 321/1643 cut-off events. For 11922/11990 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12417 event pairs, 183 based on Foata normal form. 2/1583 useless extension candidates. Maximal degree in co-relation 6752. Up to 596 conditions per place. [2021-12-06 18:30:04,756 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 30 changer transitions 38/321 dead transitions. [2021-12-06 18:30:04,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 321 transitions, 3113 flow [2021-12-06 18:30:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 18:30:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-06 18:30:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2021-12-06 18:30:04,758 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2021-12-06 18:30:04,758 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2021-12-06 18:30:04,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2021-12-06 18:30:04,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:04,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2021-12-06 18:30:04,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:04,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:04,787 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:04,787 INFO L186 Difference]: Start difference. First operand has 357 places, 228 transitions, 1466 flow. Second operand 28 states and 3703 transitions. [2021-12-06 18:30:04,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 321 transitions, 3113 flow [2021-12-06 18:30:04,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 321 transitions, 2933 flow, removed 39 selfloop flow, removed 20 redundant places. [2021-12-06 18:30:04,824 INFO L242 Difference]: Finished difference. Result has 345 places, 243 transitions, 1747 flow [2021-12-06 18:30:04,825 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1747, PETRI_PLACES=345, PETRI_TRANSITIONS=243} [2021-12-06 18:30:04,825 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2021-12-06 18:30:04,825 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 243 transitions, 1747 flow [2021-12-06 18:30:04,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:04,825 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:04,825 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] [2021-12-06 18:30:04,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-06 18:30:04,825 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash 231690870, now seen corresponding path program 20 times [2021-12-06 18:30:04,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:04,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257458104] [2021-12-06 18:30:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:04,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:04,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:04,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257458104] [2021-12-06 18:30:04,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257458104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:04,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:04,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:04,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011139781] [2021-12-06 18:30:04,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:04,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:04,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:04,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:04,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:04,895 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:04,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 243 transitions, 1747 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:04,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:04,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:04,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:05,382 INFO L129 PetriNetUnfolder]: 322/1627 cut-off events. [2021-12-06 18:30:05,382 INFO L130 PetriNetUnfolder]: For 11069/11137 co-relation queries the response was YES. [2021-12-06 18:30:05,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 1627 events. 322/1627 cut-off events. For 11069/11137 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12275 event pairs, 196 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 6830. Up to 603 conditions per place. [2021-12-06 18:30:05,401 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 34 changer transitions 35/315 dead transitions. [2021-12-06 18:30:05,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 315 transitions, 3222 flow [2021-12-06 18:30:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 18:30:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-06 18:30:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2021-12-06 18:30:05,403 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2021-12-06 18:30:05,403 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2021-12-06 18:30:05,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2021-12-06 18:30:05,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:05,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2021-12-06 18:30:05,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:05,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:05,407 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:05,407 INFO L186 Difference]: Start difference. First operand has 345 places, 243 transitions, 1747 flow. Second operand 26 states and 3446 transitions. [2021-12-06 18:30:05,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 315 transitions, 3222 flow [2021-12-06 18:30:05,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 315 transitions, 3052 flow, removed 77 selfloop flow, removed 16 redundant places. [2021-12-06 18:30:05,453 INFO L242 Difference]: Finished difference. Result has 357 places, 257 transitions, 2074 flow [2021-12-06 18:30:05,453 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2074, PETRI_PLACES=357, PETRI_TRANSITIONS=257} [2021-12-06 18:30:05,453 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 200 predicate places. [2021-12-06 18:30:05,453 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 257 transitions, 2074 flow [2021-12-06 18:30:05,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:05,453 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:05,454 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] [2021-12-06 18:30:05,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-06 18:30:05,454 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:05,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:05,454 INFO L85 PathProgramCache]: Analyzing trace with hash -948438850, now seen corresponding path program 21 times [2021-12-06 18:30:05,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:05,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336364715] [2021-12-06 18:30:05,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:05,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:05,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:05,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336364715] [2021-12-06 18:30:05,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336364715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:05,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:05,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:05,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270682528] [2021-12-06 18:30:05,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:05,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:05,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:05,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:05,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:05,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 257 transitions, 2074 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:05,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:05,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:05,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:06,050 INFO L129 PetriNetUnfolder]: 318/1627 cut-off events. [2021-12-06 18:30:06,050 INFO L130 PetriNetUnfolder]: For 12773/12841 co-relation queries the response was YES. [2021-12-06 18:30:06,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7158 conditions, 1627 events. 318/1627 cut-off events. For 12773/12841 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12240 event pairs, 190 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 7032. Up to 601 conditions per place. [2021-12-06 18:30:06,068 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 36 changer transitions 39/325 dead transitions. [2021-12-06 18:30:06,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 325 transitions, 3501 flow [2021-12-06 18:30:06,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 18:30:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-06 18:30:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3575 transitions. [2021-12-06 18:30:06,070 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609621115368241 [2021-12-06 18:30:06,070 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3575 transitions. [2021-12-06 18:30:06,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3575 transitions. [2021-12-06 18:30:06,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:06,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3575 transitions. [2021-12-06 18:30:06,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.40740740740742) internal successors, (3575), 27 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:06,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:06,075 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:06,075 INFO L186 Difference]: Start difference. First operand has 357 places, 257 transitions, 2074 flow. Second operand 27 states and 3575 transitions. [2021-12-06 18:30:06,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 325 transitions, 3501 flow [2021-12-06 18:30:06,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 325 transitions, 3245 flow, removed 108 selfloop flow, removed 16 redundant places. [2021-12-06 18:30:06,135 INFO L242 Difference]: Finished difference. Result has 370 places, 260 transitions, 2142 flow [2021-12-06 18:30:06,135 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2142, PETRI_PLACES=370, PETRI_TRANSITIONS=260} [2021-12-06 18:30:06,135 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 213 predicate places. [2021-12-06 18:30:06,135 INFO L470 AbstractCegarLoop]: Abstraction has has 370 places, 260 transitions, 2142 flow [2021-12-06 18:30:06,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:06,136 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:06,136 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] [2021-12-06 18:30:06,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-06 18:30:06,136 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:06,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:06,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1366905276, now seen corresponding path program 22 times [2021-12-06 18:30:06,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:06,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108992712] [2021-12-06 18:30:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:06,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:06,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:06,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108992712] [2021-12-06 18:30:06,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108992712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:06,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:06,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:06,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678304732] [2021-12-06 18:30:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:06,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:06,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:06,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:06,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:06,195 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:06,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 260 transitions, 2142 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:06,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:06,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:06,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:06,640 INFO L129 PetriNetUnfolder]: 311/1589 cut-off events. [2021-12-06 18:30:06,640 INFO L130 PetriNetUnfolder]: For 12309/12377 co-relation queries the response was YES. [2021-12-06 18:30:06,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6980 conditions, 1589 events. 311/1589 cut-off events. For 12309/12377 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11834 event pairs, 181 based on Foata normal form. 2/1528 useless extension candidates. Maximal degree in co-relation 6849. Up to 603 conditions per place. [2021-12-06 18:30:06,659 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 39 changer transitions 31/325 dead transitions. [2021-12-06 18:30:06,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 325 transitions, 3439 flow [2021-12-06 18:30:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:30:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 18:30:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2021-12-06 18:30:06,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2021-12-06 18:30:06,661 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2021-12-06 18:30:06,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2021-12-06 18:30:06,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:06,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2021-12-06 18:30:06,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 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) [2021-12-06 18:30:06,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:06,665 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:06,665 INFO L186 Difference]: Start difference. First operand has 370 places, 260 transitions, 2142 flow. Second operand 22 states and 2920 transitions. [2021-12-06 18:30:06,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 325 transitions, 3439 flow [2021-12-06 18:30:06,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 325 transitions, 3189 flow, removed 87 selfloop flow, removed 19 redundant places. [2021-12-06 18:30:06,726 INFO L242 Difference]: Finished difference. Result has 366 places, 267 transitions, 2238 flow [2021-12-06 18:30:06,726 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2238, PETRI_PLACES=366, PETRI_TRANSITIONS=267} [2021-12-06 18:30:06,727 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 209 predicate places. [2021-12-06 18:30:06,727 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 267 transitions, 2238 flow [2021-12-06 18:30:06,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:06,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:06,727 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] [2021-12-06 18:30:06,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-06 18:30:06,727 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:06,728 INFO L85 PathProgramCache]: Analyzing trace with hash -97855530, now seen corresponding path program 23 times [2021-12-06 18:30:06,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:06,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572763499] [2021-12-06 18:30:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:06,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:06,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:06,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572763499] [2021-12-06 18:30:06,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572763499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:06,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:06,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:06,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485546122] [2021-12-06 18:30:06,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:06,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:06,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:06,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:06,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:06,791 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:06,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 267 transitions, 2238 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:06,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:06,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:06,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:07,234 INFO L129 PetriNetUnfolder]: 315/1608 cut-off events. [2021-12-06 18:30:07,234 INFO L130 PetriNetUnfolder]: For 11335/11403 co-relation queries the response was YES. [2021-12-06 18:30:07,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7016 conditions, 1608 events. 315/1608 cut-off events. For 11335/11403 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12048 event pairs, 188 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 6891. Up to 605 conditions per place. [2021-12-06 18:30:07,252 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 46 changer transitions 30/325 dead transitions. [2021-12-06 18:30:07,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 325 transitions, 3441 flow [2021-12-06 18:30:07,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:30:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 18:30:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2021-12-06 18:30:07,254 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2021-12-06 18:30:07,254 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2021-12-06 18:30:07,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2021-12-06 18:30:07,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:07,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2021-12-06 18:30:07,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:07,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:07,257 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:07,258 INFO L186 Difference]: Start difference. First operand has 366 places, 267 transitions, 2238 flow. Second operand 21 states and 2792 transitions. [2021-12-06 18:30:07,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 325 transitions, 3441 flow [2021-12-06 18:30:07,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 325 transitions, 3330 flow, removed 40 selfloop flow, removed 7 redundant places. [2021-12-06 18:30:07,316 INFO L242 Difference]: Finished difference. Result has 380 places, 277 transitions, 2486 flow [2021-12-06 18:30:07,316 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2486, PETRI_PLACES=380, PETRI_TRANSITIONS=277} [2021-12-06 18:30:07,316 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 223 predicate places. [2021-12-06 18:30:07,316 INFO L470 AbstractCegarLoop]: Abstraction has has 380 places, 277 transitions, 2486 flow [2021-12-06 18:30:07,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:07,317 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:07,317 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] [2021-12-06 18:30:07,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-06 18:30:07,317 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash 221173704, now seen corresponding path program 24 times [2021-12-06 18:30:07,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:07,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927723169] [2021-12-06 18:30:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:07,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:07,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:07,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927723169] [2021-12-06 18:30:07,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927723169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:07,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:07,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:07,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508017184] [2021-12-06 18:30:07,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:07,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:07,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:07,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:07,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:07,388 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:07,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 277 transitions, 2486 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:07,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:07,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:07,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:07,849 INFO L129 PetriNetUnfolder]: 311/1604 cut-off events. [2021-12-06 18:30:07,849 INFO L130 PetriNetUnfolder]: For 11630/11698 co-relation queries the response was YES. [2021-12-06 18:30:07,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7073 conditions, 1604 events. 311/1604 cut-off events. For 11630/11698 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12079 event pairs, 186 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 6941. Up to 603 conditions per place. [2021-12-06 18:30:07,868 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 111 selfloop transitions, 41 changer transitions 31/329 dead transitions. [2021-12-06 18:30:07,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 329 transitions, 3666 flow [2021-12-06 18:30:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:30:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 18:30:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2021-12-06 18:30:07,870 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2021-12-06 18:30:07,870 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2021-12-06 18:30:07,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2021-12-06 18:30:07,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:07,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2021-12-06 18:30:07,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:07,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:07,874 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:07,874 INFO L186 Difference]: Start difference. First operand has 380 places, 277 transitions, 2486 flow. Second operand 22 states and 2923 transitions. [2021-12-06 18:30:07,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 329 transitions, 3666 flow [2021-12-06 18:30:07,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 329 transitions, 3515 flow, removed 46 selfloop flow, removed 9 redundant places. [2021-12-06 18:30:07,942 INFO L242 Difference]: Finished difference. Result has 393 places, 281 transitions, 2595 flow [2021-12-06 18:30:07,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2595, PETRI_PLACES=393, PETRI_TRANSITIONS=281} [2021-12-06 18:30:07,943 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 236 predicate places. [2021-12-06 18:30:07,943 INFO L470 AbstractCegarLoop]: Abstraction has has 393 places, 281 transitions, 2595 flow [2021-12-06 18:30:07,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:07,943 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:07,943 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] [2021-12-06 18:30:07,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-12-06 18:30:07,943 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:07,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:07,944 INFO L85 PathProgramCache]: Analyzing trace with hash -468030578, now seen corresponding path program 25 times [2021-12-06 18:30:07,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:07,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008234508] [2021-12-06 18:30:07,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:07,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:08,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:08,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008234508] [2021-12-06 18:30:08,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008234508] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:08,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:08,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:08,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245527778] [2021-12-06 18:30:08,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:08,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:08,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:08,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:08,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:08,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:08,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 281 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:08,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:08,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:08,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:08,481 INFO L129 PetriNetUnfolder]: 317/1617 cut-off events. [2021-12-06 18:30:08,481 INFO L130 PetriNetUnfolder]: For 12243/12311 co-relation queries the response was YES. [2021-12-06 18:30:08,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7315 conditions, 1617 events. 317/1617 cut-off events. For 12243/12311 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12158 event pairs, 189 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 7178. Up to 605 conditions per place. [2021-12-06 18:30:08,501 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 56 changer transitions 28/333 dead transitions. [2021-12-06 18:30:08,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 333 transitions, 3854 flow [2021-12-06 18:30:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:30:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:30:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2021-12-06 18:30:08,503 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2021-12-06 18:30:08,503 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2021-12-06 18:30:08,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2021-12-06 18:30:08,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:08,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2021-12-06 18:30:08,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:08,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:08,506 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:08,507 INFO L186 Difference]: Start difference. First operand has 393 places, 281 transitions, 2595 flow. Second operand 20 states and 2663 transitions. [2021-12-06 18:30:08,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 333 transitions, 3854 flow [2021-12-06 18:30:08,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 333 transitions, 3703 flow, removed 58 selfloop flow, removed 7 redundant places. [2021-12-06 18:30:08,583 INFO L242 Difference]: Finished difference. Result has 407 places, 293 transitions, 2931 flow [2021-12-06 18:30:08,584 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2931, PETRI_PLACES=407, PETRI_TRANSITIONS=293} [2021-12-06 18:30:08,584 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 250 predicate places. [2021-12-06 18:30:08,584 INFO L470 AbstractCegarLoop]: Abstraction has has 407 places, 293 transitions, 2931 flow [2021-12-06 18:30:08,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:08,584 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:08,584 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] [2021-12-06 18:30:08,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-12-06 18:30:08,585 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:08,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:08,585 INFO L85 PathProgramCache]: Analyzing trace with hash 966015638, now seen corresponding path program 26 times [2021-12-06 18:30:08,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:08,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052927894] [2021-12-06 18:30:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:08,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:08,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:08,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052927894] [2021-12-06 18:30:08,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052927894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:08,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:08,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:08,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176946684] [2021-12-06 18:30:08,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:08,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:08,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:08,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:08,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:08,646 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:08,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 293 transitions, 2931 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:08,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:08,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:08,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:09,160 INFO L129 PetriNetUnfolder]: 321/1638 cut-off events. [2021-12-06 18:30:09,160 INFO L130 PetriNetUnfolder]: For 13428/13496 co-relation queries the response was YES. [2021-12-06 18:30:09,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7613 conditions, 1638 events. 321/1638 cut-off events. For 13428/13496 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12368 event pairs, 185 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 7468. Up to 607 conditions per place. [2021-12-06 18:30:09,178 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 46 changer transitions 28/343 dead transitions. [2021-12-06 18:30:09,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 343 transitions, 4256 flow [2021-12-06 18:30:09,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 18:30:09,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-06 18:30:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2924 transitions. [2021-12-06 18:30:09,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638453500522466 [2021-12-06 18:30:09,180 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2924 transitions. [2021-12-06 18:30:09,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2924 transitions. [2021-12-06 18:30:09,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:09,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2924 transitions. [2021-12-06 18:30:09,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.9090909090909) internal successors, (2924), 22 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) [2021-12-06 18:30:09,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:09,184 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:09,184 INFO L186 Difference]: Start difference. First operand has 407 places, 293 transitions, 2931 flow. Second operand 22 states and 2924 transitions. [2021-12-06 18:30:09,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 343 transitions, 4256 flow [2021-12-06 18:30:09,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 343 transitions, 4020 flow, removed 70 selfloop flow, removed 9 redundant places. [2021-12-06 18:30:09,269 INFO L242 Difference]: Finished difference. Result has 420 places, 305 transitions, 3167 flow [2021-12-06 18:30:09,269 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3167, PETRI_PLACES=420, PETRI_TRANSITIONS=305} [2021-12-06 18:30:09,269 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 263 predicate places. [2021-12-06 18:30:09,270 INFO L470 AbstractCegarLoop]: Abstraction has has 420 places, 305 transitions, 3167 flow [2021-12-06 18:30:09,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:09,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:09,270 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] [2021-12-06 18:30:09,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-12-06 18:30:09,270 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:09,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:09,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1795056482, now seen corresponding path program 27 times [2021-12-06 18:30:09,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:09,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577167696] [2021-12-06 18:30:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:09,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:09,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:09,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577167696] [2021-12-06 18:30:09,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577167696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:09,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:09,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:09,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099271182] [2021-12-06 18:30:09,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:09,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:09,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:09,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:09,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:09,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:09,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 305 transitions, 3167 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:09,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:09,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:09,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:09,829 INFO L129 PetriNetUnfolder]: 316/1633 cut-off events. [2021-12-06 18:30:09,829 INFO L130 PetriNetUnfolder]: For 13535/13603 co-relation queries the response was YES. [2021-12-06 18:30:09,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7561 conditions, 1633 events. 316/1633 cut-off events. For 13535/13603 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12396 event pairs, 182 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 7412. Up to 605 conditions per place. [2021-12-06 18:30:09,850 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 126 selfloop transitions, 48 changer transitions 30/350 dead transitions. [2021-12-06 18:30:09,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 350 transitions, 4435 flow [2021-12-06 18:30:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:30:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 18:30:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2797 transitions. [2021-12-06 18:30:09,852 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654625068418172 [2021-12-06 18:30:09,852 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2797 transitions. [2021-12-06 18:30:09,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2797 transitions. [2021-12-06 18:30:09,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:09,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2797 transitions. [2021-12-06 18:30:09,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.1904761904762) internal successors, (2797), 21 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:09,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:09,856 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:09,856 INFO L186 Difference]: Start difference. First operand has 420 places, 305 transitions, 3167 flow. Second operand 21 states and 2797 transitions. [2021-12-06 18:30:09,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 350 transitions, 4435 flow [2021-12-06 18:30:09,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 350 transitions, 4164 flow, removed 116 selfloop flow, removed 6 redundant places. [2021-12-06 18:30:09,946 INFO L242 Difference]: Finished difference. Result has 435 places, 312 transitions, 3294 flow [2021-12-06 18:30:09,947 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3294, PETRI_PLACES=435, PETRI_TRANSITIONS=312} [2021-12-06 18:30:09,947 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 278 predicate places. [2021-12-06 18:30:09,947 INFO L470 AbstractCegarLoop]: Abstraction has has 435 places, 312 transitions, 3294 flow [2021-12-06 18:30:09,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:09,947 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:09,947 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] [2021-12-06 18:30:09,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-12-06 18:30:09,947 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:09,948 INFO L85 PathProgramCache]: Analyzing trace with hash -979037408, now seen corresponding path program 28 times [2021-12-06 18:30:09,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:09,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724881207] [2021-12-06 18:30:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:09,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:10,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:10,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724881207] [2021-12-06 18:30:10,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724881207] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:10,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:10,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:10,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031703593] [2021-12-06 18:30:10,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:10,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:10,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:10,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:10,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:10,005 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:10,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 312 transitions, 3294 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:10,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:10,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:10,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:10,553 INFO L129 PetriNetUnfolder]: 308/1622 cut-off events. [2021-12-06 18:30:10,553 INFO L130 PetriNetUnfolder]: For 12784/12852 co-relation queries the response was YES. [2021-12-06 18:30:10,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 1622 events. 308/1622 cut-off events. For 12784/12852 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12295 event pairs, 177 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 7187. Up to 602 conditions per place. [2021-12-06 18:30:10,574 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 129 selfloop transitions, 36 changer transitions 40/351 dead transitions. [2021-12-06 18:30:10,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 351 transitions, 4167 flow [2021-12-06 18:30:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 18:30:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 18:30:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2021-12-06 18:30:10,576 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2021-12-06 18:30:10,576 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2021-12-06 18:30:10,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2021-12-06 18:30:10,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:10,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2021-12-06 18:30:10,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:10,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:10,579 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:10,579 INFO L186 Difference]: Start difference. First operand has 435 places, 312 transitions, 3294 flow. Second operand 18 states and 2400 transitions. [2021-12-06 18:30:10,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 351 transitions, 4167 flow [2021-12-06 18:30:10,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 351 transitions, 4039 flow, removed 43 selfloop flow, removed 10 redundant places. [2021-12-06 18:30:10,667 INFO L242 Difference]: Finished difference. Result has 437 places, 292 transitions, 2869 flow [2021-12-06 18:30:10,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3172, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2869, PETRI_PLACES=437, PETRI_TRANSITIONS=292} [2021-12-06 18:30:10,668 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 280 predicate places. [2021-12-06 18:30:10,668 INFO L470 AbstractCegarLoop]: Abstraction has has 437 places, 292 transitions, 2869 flow [2021-12-06 18:30:10,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:10,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:10,668 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] [2021-12-06 18:30:10,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-12-06 18:30:10,669 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1410945988, now seen corresponding path program 29 times [2021-12-06 18:30:10,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:10,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425675476] [2021-12-06 18:30:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:10,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:10,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:10,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425675476] [2021-12-06 18:30:10,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425675476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:10,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:10,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:10,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103547214] [2021-12-06 18:30:10,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:10,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:10,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:10,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:10,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:10,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:10,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 292 transitions, 2869 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:10,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:10,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:10,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:11,244 INFO L129 PetriNetUnfolder]: 303/1597 cut-off events. [2021-12-06 18:30:11,244 INFO L130 PetriNetUnfolder]: For 12218/12286 co-relation queries the response was YES. [2021-12-06 18:30:11,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7176 conditions, 1597 events. 303/1597 cut-off events. For 12218/12286 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12093 event pairs, 184 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 7022. Up to 600 conditions per place. [2021-12-06 18:30:11,265 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 119 selfloop transitions, 28 changer transitions 37/330 dead transitions. [2021-12-06 18:30:11,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 330 transitions, 3737 flow [2021-12-06 18:30:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:30:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:30:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2660 transitions. [2021-12-06 18:30:11,267 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2021-12-06 18:30:11,267 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2660 transitions. [2021-12-06 18:30:11,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2660 transitions. [2021-12-06 18:30:11,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:11,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2660 transitions. [2021-12-06 18:30:11,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.0) internal successors, (2660), 20 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:11,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:11,271 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:11,271 INFO L186 Difference]: Start difference. First operand has 437 places, 292 transitions, 2869 flow. Second operand 20 states and 2660 transitions. [2021-12-06 18:30:11,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 330 transitions, 3737 flow [2021-12-06 18:30:11,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 330 transitions, 3466 flow, removed 27 selfloop flow, removed 23 redundant places. [2021-12-06 18:30:11,356 INFO L242 Difference]: Finished difference. Result has 417 places, 281 transitions, 2529 flow [2021-12-06 18:30:11,356 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2651, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2529, PETRI_PLACES=417, PETRI_TRANSITIONS=281} [2021-12-06 18:30:11,357 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 260 predicate places. [2021-12-06 18:30:11,357 INFO L470 AbstractCegarLoop]: Abstraction has has 417 places, 281 transitions, 2529 flow [2021-12-06 18:30:11,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:11,357 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:11,357 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] [2021-12-06 18:30:11,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-12-06 18:30:11,357 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:11,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:11,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1743370204, now seen corresponding path program 30 times [2021-12-06 18:30:11,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:11,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223331916] [2021-12-06 18:30:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:11,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:11,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:11,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223331916] [2021-12-06 18:30:11,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223331916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:11,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:11,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:11,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318564586] [2021-12-06 18:30:11,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:11,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:11,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:11,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:11,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:11,423 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:11,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 281 transitions, 2529 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:11,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:11,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:11,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:11,900 INFO L129 PetriNetUnfolder]: 288/1552 cut-off events. [2021-12-06 18:30:11,900 INFO L130 PetriNetUnfolder]: For 10441/10509 co-relation queries the response was YES. [2021-12-06 18:30:11,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6512 conditions, 1552 events. 288/1552 cut-off events. For 10441/10509 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11596 event pairs, 179 based on Foata normal form. 2/1489 useless extension candidates. Maximal degree in co-relation 6364. Up to 596 conditions per place. [2021-12-06 18:30:11,919 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 15 changer transitions 40/310 dead transitions. [2021-12-06 18:30:11,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 310 transitions, 3159 flow [2021-12-06 18:30:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:30:11,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 18:30:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2523 transitions. [2021-12-06 18:30:11,921 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2021-12-06 18:30:11,921 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2523 transitions. [2021-12-06 18:30:11,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2523 transitions. [2021-12-06 18:30:11,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:11,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2523 transitions. [2021-12-06 18:30:11,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.78947368421052) internal successors, (2523), 19 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:11,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:30:11,924 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:30:11,924 INFO L186 Difference]: Start difference. First operand has 417 places, 281 transitions, 2529 flow. Second operand 19 states and 2523 transitions. [2021-12-06 18:30:11,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 310 transitions, 3159 flow [2021-12-06 18:30:11,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 310 transitions, 3009 flow, removed 23 selfloop flow, removed 22 redundant places. [2021-12-06 18:30:11,987 INFO L242 Difference]: Finished difference. Result has 399 places, 258 transitions, 2065 flow [2021-12-06 18:30:11,987 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2065, PETRI_PLACES=399, PETRI_TRANSITIONS=258} [2021-12-06 18:30:11,987 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 242 predicate places. [2021-12-06 18:30:11,987 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 258 transitions, 2065 flow [2021-12-06 18:30:11,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:11,987 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:11,988 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] [2021-12-06 18:30:11,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-12-06 18:30:11,988 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:11,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:11,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1932406374, now seen corresponding path program 31 times [2021-12-06 18:30:11,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:11,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153395497] [2021-12-06 18:30:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:11,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:12,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:12,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153395497] [2021-12-06 18:30:12,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153395497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:12,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:12,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:12,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832472499] [2021-12-06 18:30:12,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:12,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:12,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:12,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:12,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 258 transitions, 2065 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:12,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:12,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:12,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:12,541 INFO L129 PetriNetUnfolder]: 299/1584 cut-off events. [2021-12-06 18:30:12,541 INFO L130 PetriNetUnfolder]: For 10600/10668 co-relation queries the response was YES. [2021-12-06 18:30:12,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6618 conditions, 1584 events. 299/1584 cut-off events. For 10600/10668 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11923 event pairs, 182 based on Foata normal form. 2/1518 useless extension candidates. Maximal degree in co-relation 6480. Up to 596 conditions per place. [2021-12-06 18:30:12,560 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 91 selfloop transitions, 37 changer transitions 39/313 dead transitions. [2021-12-06 18:30:12,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 313 transitions, 3183 flow [2021-12-06 18:30:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 18:30:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-06 18:30:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3188 transitions. [2021-12-06 18:30:12,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634099616858238 [2021-12-06 18:30:12,562 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3188 transitions. [2021-12-06 18:30:12,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3188 transitions. [2021-12-06 18:30:12,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:12,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3188 transitions. [2021-12-06 18:30:12,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.83333333333334) internal successors, (3188), 24 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:12,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:12,566 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:12,567 INFO L186 Difference]: Start difference. First operand has 399 places, 258 transitions, 2065 flow. Second operand 24 states and 3188 transitions. [2021-12-06 18:30:12,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 313 transitions, 3183 flow [2021-12-06 18:30:12,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 313 transitions, 2985 flow, removed 24 selfloop flow, removed 20 redundant places. [2021-12-06 18:30:12,623 INFO L242 Difference]: Finished difference. Result has 384 places, 263 transitions, 2176 flow [2021-12-06 18:30:12,623 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2176, PETRI_PLACES=384, PETRI_TRANSITIONS=263} [2021-12-06 18:30:12,623 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 227 predicate places. [2021-12-06 18:30:12,623 INFO L470 AbstractCegarLoop]: Abstraction has has 384 places, 263 transitions, 2176 flow [2021-12-06 18:30:12,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:12,624 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:12,624 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] [2021-12-06 18:30:12,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-12-06 18:30:12,624 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:12,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash 29485110, now seen corresponding path program 32 times [2021-12-06 18:30:12,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:12,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95995667] [2021-12-06 18:30:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:12,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:12,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:12,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95995667] [2021-12-06 18:30:12,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95995667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:12,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:12,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:12,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856607796] [2021-12-06 18:30:12,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:12,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:12,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:12,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:12,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:12,692 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:12,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 263 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:12,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:12,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:12,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:13,159 INFO L129 PetriNetUnfolder]: 294/1581 cut-off events. [2021-12-06 18:30:13,159 INFO L130 PetriNetUnfolder]: For 9973/10041 co-relation queries the response was YES. [2021-12-06 18:30:13,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6403 conditions, 1581 events. 294/1581 cut-off events. For 9973/10041 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11867 event pairs, 175 based on Foata normal form. 2/1516 useless extension candidates. Maximal degree in co-relation 6264. Up to 596 conditions per place. [2021-12-06 18:30:13,177 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 32 changer transitions 44/317 dead transitions. [2021-12-06 18:30:13,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 317 transitions, 3274 flow [2021-12-06 18:30:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 18:30:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-06 18:30:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2021-12-06 18:30:13,179 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2021-12-06 18:30:13,179 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2021-12-06 18:30:13,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2021-12-06 18:30:13,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:13,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2021-12-06 18:30:13,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:13,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:13,183 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:13,183 INFO L186 Difference]: Start difference. First operand has 384 places, 263 transitions, 2176 flow. Second operand 23 states and 3057 transitions. [2021-12-06 18:30:13,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 317 transitions, 3274 flow [2021-12-06 18:30:13,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 317 transitions, 3154 flow, removed 42 selfloop flow, removed 14 redundant places. [2021-12-06 18:30:13,238 INFO L242 Difference]: Finished difference. Result has 390 places, 262 transitions, 2194 flow [2021-12-06 18:30:13,238 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2194, PETRI_PLACES=390, PETRI_TRANSITIONS=262} [2021-12-06 18:30:13,238 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 233 predicate places. [2021-12-06 18:30:13,239 INFO L470 AbstractCegarLoop]: Abstraction has has 390 places, 262 transitions, 2194 flow [2021-12-06 18:30:13,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:13,239 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:13,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:30:13,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-12-06 18:30:13,239 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:13,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash 789651188, now seen corresponding path program 33 times [2021-12-06 18:30:13,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:13,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990077320] [2021-12-06 18:30:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:13,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:13,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:13,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990077320] [2021-12-06 18:30:13,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990077320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:13,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:13,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:13,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600212282] [2021-12-06 18:30:13,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:13,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:13,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:13,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:13,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:13,299 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:13,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 262 transitions, 2194 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:13,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:13,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:13,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:13,736 INFO L129 PetriNetUnfolder]: 276/1515 cut-off events. [2021-12-06 18:30:13,736 INFO L130 PetriNetUnfolder]: For 9179/9247 co-relation queries the response was YES. [2021-12-06 18:30:13,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6026 conditions, 1515 events. 276/1515 cut-off events. For 9179/9247 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11277 event pairs, 175 based on Foata normal form. 2/1450 useless extension candidates. Maximal degree in co-relation 5886. Up to 594 conditions per place. [2021-12-06 18:30:13,754 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 21 changer transitions 37/287 dead transitions. [2021-12-06 18:30:13,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 287 transitions, 2743 flow [2021-12-06 18:30:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:30:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:30:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2659 transitions. [2021-12-06 18:30:13,756 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764080459770115 [2021-12-06 18:30:13,756 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2659 transitions. [2021-12-06 18:30:13,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2659 transitions. [2021-12-06 18:30:13,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:13,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2659 transitions. [2021-12-06 18:30:13,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.95) internal successors, (2659), 20 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:13,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:13,760 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:13,760 INFO L186 Difference]: Start difference. First operand has 390 places, 262 transitions, 2194 flow. Second operand 20 states and 2659 transitions. [2021-12-06 18:30:13,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 287 transitions, 2743 flow [2021-12-06 18:30:13,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 287 transitions, 2572 flow, removed 33 selfloop flow, removed 21 redundant places. [2021-12-06 18:30:13,811 INFO L242 Difference]: Finished difference. Result has 381 places, 244 transitions, 1807 flow [2021-12-06 18:30:13,812 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1807, PETRI_PLACES=381, PETRI_TRANSITIONS=244} [2021-12-06 18:30:13,812 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 224 predicate places. [2021-12-06 18:30:13,812 INFO L470 AbstractCegarLoop]: Abstraction has has 381 places, 244 transitions, 1807 flow [2021-12-06 18:30:13,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:13,812 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:13,812 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] [2021-12-06 18:30:13,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-12-06 18:30:13,813 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:13,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:13,813 INFO L85 PathProgramCache]: Analyzing trace with hash -267571106, now seen corresponding path program 34 times [2021-12-06 18:30:13,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:13,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100297221] [2021-12-06 18:30:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:13,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:13,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:13,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100297221] [2021-12-06 18:30:13,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100297221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:13,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:13,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:13,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821493333] [2021-12-06 18:30:13,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:13,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:13,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:13,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:13,880 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:13,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 244 transitions, 1807 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:13,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:13,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:13,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:14,302 INFO L129 PetriNetUnfolder]: 271/1487 cut-off events. [2021-12-06 18:30:14,302 INFO L130 PetriNetUnfolder]: For 8409/8477 co-relation queries the response was YES. [2021-12-06 18:30:14,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5778 conditions, 1487 events. 271/1487 cut-off events. For 8409/8477 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11006 event pairs, 178 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 5647. Up to 592 conditions per place. [2021-12-06 18:30:14,317 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 77 selfloop transitions, 16 changer transitions 36/275 dead transitions. [2021-12-06 18:30:14,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 275 transitions, 2441 flow [2021-12-06 18:30:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:30:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 18:30:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2528 transitions. [2021-12-06 18:30:14,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764670296430732 [2021-12-06 18:30:14,318 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2528 transitions. [2021-12-06 18:30:14,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2528 transitions. [2021-12-06 18:30:14,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:14,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2528 transitions. [2021-12-06 18:30:14,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.05263157894737) internal successors, (2528), 19 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:14,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:30:14,322 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 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) [2021-12-06 18:30:14,322 INFO L186 Difference]: Start difference. First operand has 381 places, 244 transitions, 1807 flow. Second operand 19 states and 2528 transitions. [2021-12-06 18:30:14,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 275 transitions, 2441 flow [2021-12-06 18:30:14,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 275 transitions, 2267 flow, removed 21 selfloop flow, removed 22 redundant places. [2021-12-06 18:30:14,367 INFO L242 Difference]: Finished difference. Result has 359 places, 233 transitions, 1553 flow [2021-12-06 18:30:14,367 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1553, PETRI_PLACES=359, PETRI_TRANSITIONS=233} [2021-12-06 18:30:14,367 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 202 predicate places. [2021-12-06 18:30:14,367 INFO L470 AbstractCegarLoop]: Abstraction has has 359 places, 233 transitions, 1553 flow [2021-12-06 18:30:14,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:14,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:14,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:30:14,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-12-06 18:30:14,368 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:14,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:14,368 INFO L85 PathProgramCache]: Analyzing trace with hash -607432702, now seen corresponding path program 35 times [2021-12-06 18:30:14,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:14,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046383882] [2021-12-06 18:30:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:14,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:14,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:14,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046383882] [2021-12-06 18:30:14,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046383882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:14,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:14,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:30:14,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071692911] [2021-12-06 18:30:14,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:14,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:30:14,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:30:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:14,433 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-06 18:30:14,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 233 transitions, 1553 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:14,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:14,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-06 18:30:14,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:14,814 INFO L129 PetriNetUnfolder]: 256/1409 cut-off events. [2021-12-06 18:30:14,814 INFO L130 PetriNetUnfolder]: For 7447/7515 co-relation queries the response was YES. [2021-12-06 18:30:14,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5275 conditions, 1409 events. 256/1409 cut-off events. For 7447/7515 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 10301 event pairs, 171 based on Foata normal form. 2/1345 useless extension candidates. Maximal degree in co-relation 5151. Up to 571 conditions per place. [2021-12-06 18:30:14,830 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 66 selfloop transitions, 2 changer transitions 40/252 dead transitions. [2021-12-06 18:30:14,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 252 transitions, 1941 flow [2021-12-06 18:30:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 18:30:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 18:30:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2021-12-06 18:30:14,832 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2021-12-06 18:30:14,832 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2021-12-06 18:30:14,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2021-12-06 18:30:14,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:14,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2021-12-06 18:30:14,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:14,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:14,835 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:14,835 INFO L186 Difference]: Start difference. First operand has 359 places, 233 transitions, 1553 flow. Second operand 20 states and 2645 transitions. [2021-12-06 18:30:14,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 252 transitions, 1941 flow [2021-12-06 18:30:14,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 252 transitions, 1834 flow, removed 21 selfloop flow, removed 22 redundant places. [2021-12-06 18:30:14,870 INFO L242 Difference]: Finished difference. Result has 343 places, 206 transitions, 1141 flow [2021-12-06 18:30:14,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1141, PETRI_PLACES=343, PETRI_TRANSITIONS=206} [2021-12-06 18:30:14,870 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2021-12-06 18:30:14,870 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 206 transitions, 1141 flow [2021-12-06 18:30:14,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:14,871 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:14,871 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] [2021-12-06 18:30:14,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-12-06 18:30:14,871 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:14,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:14,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2121842797, now seen corresponding path program 1 times [2021-12-06 18:30:14,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:14,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863849031] [2021-12-06 18:30:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:14,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:15,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:15,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863849031] [2021-12-06 18:30:15,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863849031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:15,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:15,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-06 18:30:15,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874486210] [2021-12-06 18:30:15,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:15,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 18:30:15,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:15,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 18:30:15,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:30:15,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2021-12-06 18:30:15,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 206 transitions, 1141 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:15,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:15,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2021-12-06 18:30:15,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:16,335 INFO L129 PetriNetUnfolder]: 769/3125 cut-off events. [2021-12-06 18:30:16,335 INFO L130 PetriNetUnfolder]: For 14003/14037 co-relation queries the response was YES. [2021-12-06 18:30:16,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10237 conditions, 3125 events. 769/3125 cut-off events. For 14003/14037 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 25953 event pairs, 277 based on Foata normal form. 27/3034 useless extension candidates. Maximal degree in co-relation 10121. Up to 518 conditions per place. [2021-12-06 18:30:16,365 INFO L132 encePairwiseOnDemand]: 147/174 looper letters, 257 selfloop transitions, 35 changer transitions 60/439 dead transitions. [2021-12-06 18:30:16,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 439 transitions, 3413 flow [2021-12-06 18:30:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 18:30:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-06 18:30:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3042 transitions. [2021-12-06 18:30:16,367 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.624384236453202 [2021-12-06 18:30:16,367 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3042 transitions. [2021-12-06 18:30:16,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3042 transitions. [2021-12-06 18:30:16,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:16,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3042 transitions. [2021-12-06 18:30:16,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.64285714285714) internal successors, (3042), 28 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:16,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:16,372 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:16,372 INFO L186 Difference]: Start difference. First operand has 343 places, 206 transitions, 1141 flow. Second operand 28 states and 3042 transitions. [2021-12-06 18:30:16,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 439 transitions, 3413 flow [2021-12-06 18:30:16,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 439 transitions, 3223 flow, removed 73 selfloop flow, removed 28 redundant places. [2021-12-06 18:30:16,409 INFO L242 Difference]: Finished difference. Result has 329 places, 214 transitions, 1298 flow [2021-12-06 18:30:16,409 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1298, PETRI_PLACES=329, PETRI_TRANSITIONS=214} [2021-12-06 18:30:16,409 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 172 predicate places. [2021-12-06 18:30:16,409 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 214 transitions, 1298 flow [2021-12-06 18:30:16,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:16,410 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:16,410 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] [2021-12-06 18:30:16,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-12-06 18:30:16,410 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:16,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:16,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2074009625, now seen corresponding path program 2 times [2021-12-06 18:30:16,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:16,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380285402] [2021-12-06 18:30:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:16,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:16,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:16,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380285402] [2021-12-06 18:30:16,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380285402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:16,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:16,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-06 18:30:16,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478334299] [2021-12-06 18:30:16,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:16,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 18:30:16,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:16,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 18:30:16,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:30:16,600 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2021-12-06 18:30:16,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 214 transitions, 1298 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:16,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:16,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2021-12-06 18:30:16,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:18,251 INFO L129 PetriNetUnfolder]: 757/2988 cut-off events. [2021-12-06 18:30:18,251 INFO L130 PetriNetUnfolder]: For 19485/19514 co-relation queries the response was YES. [2021-12-06 18:30:18,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11471 conditions, 2988 events. 757/2988 cut-off events. For 19485/19514 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 24461 event pairs, 365 based on Foata normal form. 23/2907 useless extension candidates. Maximal degree in co-relation 11355. Up to 733 conditions per place. [2021-12-06 18:30:18,282 INFO L132 encePairwiseOnDemand]: 149/174 looper letters, 248 selfloop transitions, 23 changer transitions 90/448 dead transitions. [2021-12-06 18:30:18,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 448 transitions, 3623 flow [2021-12-06 18:30:18,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 18:30:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-12-06 18:30:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4029 transitions. [2021-12-06 18:30:18,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6093466424682396 [2021-12-06 18:30:18,285 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4029 transitions. [2021-12-06 18:30:18,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4029 transitions. [2021-12-06 18:30:18,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:18,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4029 transitions. [2021-12-06 18:30:18,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 106.02631578947368) internal successors, (4029), 38 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:18,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:18,291 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:18,291 INFO L186 Difference]: Start difference. First operand has 329 places, 214 transitions, 1298 flow. Second operand 38 states and 4029 transitions. [2021-12-06 18:30:18,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 448 transitions, 3623 flow [2021-12-06 18:30:18,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 448 transitions, 3264 flow, removed 155 selfloop flow, removed 27 redundant places. [2021-12-06 18:30:18,353 INFO L242 Difference]: Finished difference. Result has 344 places, 216 transitions, 1357 flow [2021-12-06 18:30:18,353 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1357, PETRI_PLACES=344, PETRI_TRANSITIONS=216} [2021-12-06 18:30:18,353 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 187 predicate places. [2021-12-06 18:30:18,353 INFO L470 AbstractCegarLoop]: Abstraction has has 344 places, 216 transitions, 1357 flow [2021-12-06 18:30:18,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:18,354 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:18,354 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] [2021-12-06 18:30:18,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-12-06 18:30:18,354 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:18,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2042869711, now seen corresponding path program 3 times [2021-12-06 18:30:18,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:18,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673855734] [2021-12-06 18:30:18,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:18,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:18,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:18,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673855734] [2021-12-06 18:30:18,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673855734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:18,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:18,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-06 18:30:18,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729365429] [2021-12-06 18:30:18,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:18,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 18:30:18,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:18,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 18:30:18,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:30:18,544 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2021-12-06 18:30:18,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 216 transitions, 1357 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:18,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:18,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2021-12-06 18:30:18,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:19,965 INFO L129 PetriNetUnfolder]: 905/3848 cut-off events. [2021-12-06 18:30:19,965 INFO L130 PetriNetUnfolder]: For 23844/23874 co-relation queries the response was YES. [2021-12-06 18:30:19,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14327 conditions, 3848 events. 905/3848 cut-off events. For 23844/23874 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 33863 event pairs, 292 based on Foata normal form. 24/3744 useless extension candidates. Maximal degree in co-relation 14202. Up to 898 conditions per place. [2021-12-06 18:30:20,005 INFO L132 encePairwiseOnDemand]: 144/174 looper letters, 278 selfloop transitions, 95 changer transitions 47/507 dead transitions. [2021-12-06 18:30:20,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 507 transitions, 4881 flow [2021-12-06 18:30:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 18:30:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-06 18:30:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2749 transitions. [2021-12-06 18:30:20,007 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6319540229885058 [2021-12-06 18:30:20,007 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2749 transitions. [2021-12-06 18:30:20,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2749 transitions. [2021-12-06 18:30:20,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:20,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2749 transitions. [2021-12-06 18:30:20,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 109.96) internal successors, (2749), 25 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,011 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,011 INFO L186 Difference]: Start difference. First operand has 344 places, 216 transitions, 1357 flow. Second operand 25 states and 2749 transitions. [2021-12-06 18:30:20,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 507 transitions, 4881 flow [2021-12-06 18:30:20,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 507 transitions, 4451 flow, removed 194 selfloop flow, removed 32 redundant places. [2021-12-06 18:30:20,083 INFO L242 Difference]: Finished difference. Result has 326 places, 291 transitions, 2550 flow [2021-12-06 18:30:20,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2550, PETRI_PLACES=326, PETRI_TRANSITIONS=291} [2021-12-06 18:30:20,083 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2021-12-06 18:30:20,083 INFO L470 AbstractCegarLoop]: Abstraction has has 326 places, 291 transitions, 2550 flow [2021-12-06 18:30:20,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:20,084 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] [2021-12-06 18:30:20,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-12-06 18:30:20,084 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:20,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:20,084 INFO L85 PathProgramCache]: Analyzing trace with hash 416877797, now seen corresponding path program 4 times [2021-12-06 18:30:20,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:20,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357429790] [2021-12-06 18:30:20,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:20,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:20,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:20,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357429790] [2021-12-06 18:30:20,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357429790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:20,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:20,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:30:20,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714903978] [2021-12-06 18:30:20,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:20,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:30:20,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:20,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:30:20,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:30:20,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2021-12-06 18:30:20,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 291 transitions, 2550 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:20,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2021-12-06 18:30:20,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:20,377 INFO L129 PetriNetUnfolder]: 143/1264 cut-off events. [2021-12-06 18:30:20,377 INFO L130 PetriNetUnfolder]: For 7888/7953 co-relation queries the response was YES. [2021-12-06 18:30:20,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4401 conditions, 1264 events. 143/1264 cut-off events. For 7888/7953 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8860 event pairs, 66 based on Foata normal form. 47/1266 useless extension candidates. Maximal degree in co-relation 4284. Up to 81 conditions per place. [2021-12-06 18:30:20,391 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 42 selfloop transitions, 6 changer transitions 34/261 dead transitions. [2021-12-06 18:30:20,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 261 transitions, 2127 flow [2021-12-06 18:30:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:30:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-06 18:30:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2021-12-06 18:30:20,392 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8574712643678161 [2021-12-06 18:30:20,392 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2021-12-06 18:30:20,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2021-12-06 18:30:20,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:20,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2021-12-06 18:30:20,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,394 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,394 INFO L186 Difference]: Start difference. First operand has 326 places, 291 transitions, 2550 flow. Second operand 5 states and 746 transitions. [2021-12-06 18:30:20,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 261 transitions, 2127 flow [2021-12-06 18:30:20,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 261 transitions, 1842 flow, removed 136 selfloop flow, removed 16 redundant places. [2021-12-06 18:30:20,432 INFO L242 Difference]: Finished difference. Result has 305 places, 222 transitions, 1386 flow [2021-12-06 18:30:20,432 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1386, PETRI_PLACES=305, PETRI_TRANSITIONS=222} [2021-12-06 18:30:20,432 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 148 predicate places. [2021-12-06 18:30:20,432 INFO L470 AbstractCegarLoop]: Abstraction has has 305 places, 222 transitions, 1386 flow [2021-12-06 18:30:20,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:20,433 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] [2021-12-06 18:30:20,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-12-06 18:30:20,433 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:20,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:20,433 INFO L85 PathProgramCache]: Analyzing trace with hash 271168019, now seen corresponding path program 1 times [2021-12-06 18:30:20,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:20,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267668126] [2021-12-06 18:30:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:20,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:20,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:20,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267668126] [2021-12-06 18:30:20,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267668126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:20,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:20,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:30:20,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020205651] [2021-12-06 18:30:20,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:20,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:30:20,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:20,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:30:20,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:30:20,498 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2021-12-06 18:30:20,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 222 transitions, 1386 flow. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:20,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2021-12-06 18:30:20,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:20,598 INFO L129 PetriNetUnfolder]: 42/474 cut-off events. [2021-12-06 18:30:20,598 INFO L130 PetriNetUnfolder]: For 1569/1569 co-relation queries the response was YES. [2021-12-06 18:30:20,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 474 events. 42/474 cut-off events. For 1569/1569 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1948 event pairs, 29 based on Foata normal form. 10/461 useless extension candidates. Maximal degree in co-relation 1184. Up to 65 conditions per place. [2021-12-06 18:30:20,602 INFO L132 encePairwiseOnDemand]: 170/174 looper letters, 27 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2021-12-06 18:30:20,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 148 transitions, 603 flow [2021-12-06 18:30:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:30:20,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 18:30:20,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2021-12-06 18:30:20,603 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8524904214559387 [2021-12-06 18:30:20,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2021-12-06 18:30:20,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2021-12-06 18:30:20,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:20,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2021-12-06 18:30:20,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,604 INFO L186 Difference]: Start difference. First operand has 305 places, 222 transitions, 1386 flow. Second operand 3 states and 445 transitions. [2021-12-06 18:30:20,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 148 transitions, 603 flow [2021-12-06 18:30:20,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 148 transitions, 489 flow, removed 38 selfloop flow, removed 37 redundant places. [2021-12-06 18:30:20,608 INFO L242 Difference]: Finished difference. Result has 216 places, 147 transitions, 432 flow [2021-12-06 18:30:20,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=216, PETRI_TRANSITIONS=147} [2021-12-06 18:30:20,609 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 59 predicate places. [2021-12-06 18:30:20,609 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 147 transitions, 432 flow [2021-12-06 18:30:20,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:20,609 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:20,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:30:20,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-12-06 18:30:20,609 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:20,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:20,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1847307151, now seen corresponding path program 1 times [2021-12-06 18:30:20,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:20,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505915904] [2021-12-06 18:30:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:20,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:21,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:21,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505915904] [2021-12-06 18:30:21,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505915904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:21,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:21,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:30:21,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909852048] [2021-12-06 18:30:21,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:21,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:30:21,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:21,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:30:21,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:30:21,080 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:30:21,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 147 transitions, 432 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:21,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:21,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:30:21,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:28,577 INFO L129 PetriNetUnfolder]: 586/1832 cut-off events. [2021-12-06 18:30:28,577 INFO L130 PetriNetUnfolder]: For 2204/2204 co-relation queries the response was YES. [2021-12-06 18:30:28,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4491 conditions, 1832 events. 586/1832 cut-off events. For 2204/2204 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11002 event pairs, 0 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 4422. Up to 135 conditions per place. [2021-12-06 18:30:28,588 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 342 selfloop transitions, 20 changer transitions 183/616 dead transitions. [2021-12-06 18:30:28,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 616 transitions, 3478 flow [2021-12-06 18:30:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-12-06 18:30:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-12-06 18:30:28,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7849 transitions. [2021-12-06 18:30:28,593 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5126044932079414 [2021-12-06 18:30:28,593 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7849 transitions. [2021-12-06 18:30:28,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7849 transitions. [2021-12-06 18:30:28,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:28,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7849 transitions. [2021-12-06 18:30:28,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.19318181818181) internal successors, (7849), 88 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:28,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:28,606 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:28,606 INFO L186 Difference]: Start difference. First operand has 216 places, 147 transitions, 432 flow. Second operand 88 states and 7849 transitions. [2021-12-06 18:30:28,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 616 transitions, 3478 flow [2021-12-06 18:30:28,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 616 transitions, 3472 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-06 18:30:28,616 INFO L242 Difference]: Finished difference. Result has 373 places, 147 transitions, 619 flow [2021-12-06 18:30:28,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=619, PETRI_PLACES=373, PETRI_TRANSITIONS=147} [2021-12-06 18:30:28,616 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 216 predicate places. [2021-12-06 18:30:28,616 INFO L470 AbstractCegarLoop]: Abstraction has has 373 places, 147 transitions, 619 flow [2021-12-06 18:30:28,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:28,616 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:28,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:30:28,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-12-06 18:30:28,617 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:28,617 INFO L85 PathProgramCache]: Analyzing trace with hash 111439229, now seen corresponding path program 2 times [2021-12-06 18:30:28,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:28,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056439084] [2021-12-06 18:30:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:28,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:29,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:29,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056439084] [2021-12-06 18:30:29,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056439084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:29,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:29,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:30:29,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100678640] [2021-12-06 18:30:29,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:29,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:30:29,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:29,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:30:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:30:29,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:30:29,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 147 transitions, 619 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:29,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:29,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:30:29,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:37,474 INFO L129 PetriNetUnfolder]: 889/2791 cut-off events. [2021-12-06 18:30:37,474 INFO L130 PetriNetUnfolder]: For 15764/15764 co-relation queries the response was YES. [2021-12-06 18:30:37,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10517 conditions, 2791 events. 889/2791 cut-off events. For 15764/15764 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19461 event pairs, 50 based on Foata normal form. 1/2734 useless extension candidates. Maximal degree in co-relation 10377. Up to 895 conditions per place. [2021-12-06 18:30:37,508 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 361 selfloop transitions, 20 changer transitions 160/612 dead transitions. [2021-12-06 18:30:37,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 612 transitions, 4872 flow [2021-12-06 18:30:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-12-06 18:30:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-12-06 18:30:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7845 transitions. [2021-12-06 18:30:37,513 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5123432601880877 [2021-12-06 18:30:37,513 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7845 transitions. [2021-12-06 18:30:37,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7845 transitions. [2021-12-06 18:30:37,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:37,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7845 transitions. [2021-12-06 18:30:37,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.14772727272727) internal successors, (7845), 88 states have internal predecessors, (7845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:37,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:37,525 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:37,525 INFO L186 Difference]: Start difference. First operand has 373 places, 147 transitions, 619 flow. Second operand 88 states and 7845 transitions. [2021-12-06 18:30:37,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 612 transitions, 4872 flow [2021-12-06 18:30:37,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 612 transitions, 3477 flow, removed 457 selfloop flow, removed 82 redundant places. [2021-12-06 18:30:37,556 INFO L242 Difference]: Finished difference. Result has 392 places, 160 transitions, 851 flow [2021-12-06 18:30:37,557 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=851, PETRI_PLACES=392, PETRI_TRANSITIONS=160} [2021-12-06 18:30:37,557 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 235 predicate places. [2021-12-06 18:30:37,557 INFO L470 AbstractCegarLoop]: Abstraction has has 392 places, 160 transitions, 851 flow [2021-12-06 18:30:37,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:37,557 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:37,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:30:37,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-12-06 18:30:37,558 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:37,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:37,558 INFO L85 PathProgramCache]: Analyzing trace with hash 278112939, now seen corresponding path program 3 times [2021-12-06 18:30:37,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:37,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158997953] [2021-12-06 18:30:37,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:37,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:38,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:38,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158997953] [2021-12-06 18:30:38,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158997953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:38,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:38,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:30:38,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305698948] [2021-12-06 18:30:38,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:38,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:30:38,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:38,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:30:38,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:30:38,021 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:30:38,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 160 transitions, 851 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:38,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:38,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:30:38,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:45,459 INFO L129 PetriNetUnfolder]: 983/3139 cut-off events. [2021-12-06 18:30:45,459 INFO L130 PetriNetUnfolder]: For 32552/32552 co-relation queries the response was YES. [2021-12-06 18:30:45,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13814 conditions, 3139 events. 983/3139 cut-off events. For 32552/32552 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 22804 event pairs, 10 based on Foata normal form. 1/3107 useless extension candidates. Maximal degree in co-relation 13656. Up to 262 conditions per place. [2021-12-06 18:30:45,497 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 461 selfloop transitions, 25 changer transitions 158/715 dead transitions. [2021-12-06 18:30:45,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 715 transitions, 7301 flow [2021-12-06 18:30:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 18:30:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-06 18:30:45,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7508 transitions. [2021-12-06 18:30:45,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5136836343732896 [2021-12-06 18:30:45,502 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7508 transitions. [2021-12-06 18:30:45,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7508 transitions. [2021-12-06 18:30:45,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:45,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7508 transitions. [2021-12-06 18:30:45,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.38095238095238) internal successors, (7508), 84 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:45,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:45,514 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:45,514 INFO L186 Difference]: Start difference. First operand has 392 places, 160 transitions, 851 flow. Second operand 84 states and 7508 transitions. [2021-12-06 18:30:45,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 715 transitions, 7301 flow [2021-12-06 18:30:45,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 715 transitions, 6734 flow, removed 278 selfloop flow, removed 32 redundant places. [2021-12-06 18:30:45,602 INFO L242 Difference]: Finished difference. Result has 441 places, 166 transitions, 1058 flow [2021-12-06 18:30:45,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1058, PETRI_PLACES=441, PETRI_TRANSITIONS=166} [2021-12-06 18:30:45,603 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 284 predicate places. [2021-12-06 18:30:45,603 INFO L470 AbstractCegarLoop]: Abstraction has has 441 places, 166 transitions, 1058 flow [2021-12-06 18:30:45,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:45,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:45,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:30:45,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-12-06 18:30:45,603 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:45,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:45,604 INFO L85 PathProgramCache]: Analyzing trace with hash -954862079, now seen corresponding path program 4 times [2021-12-06 18:30:45,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:45,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163494897] [2021-12-06 18:30:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:45,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:46,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:46,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163494897] [2021-12-06 18:30:46,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163494897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:46,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:46,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:30:46,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821348336] [2021-12-06 18:30:46,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:46,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:30:46,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:46,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:30:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:30:46,083 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:30:46,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 166 transitions, 1058 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:46,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:46,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:30:46,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:30:54,022 INFO L129 PetriNetUnfolder]: 1056/3405 cut-off events. [2021-12-06 18:30:54,022 INFO L130 PetriNetUnfolder]: For 38392/38392 co-relation queries the response was YES. [2021-12-06 18:30:54,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16901 conditions, 3405 events. 1056/3405 cut-off events. For 38392/38392 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 25346 event pairs, 66 based on Foata normal form. 1/3336 useless extension candidates. Maximal degree in co-relation 16704. Up to 895 conditions per place. [2021-12-06 18:30:54,081 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 412 selfloop transitions, 26 changer transitions 151/660 dead transitions. [2021-12-06 18:30:54,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 660 transitions, 7799 flow [2021-12-06 18:30:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 18:30:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-06 18:30:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7520 transitions. [2021-12-06 18:30:54,088 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5145046524356869 [2021-12-06 18:30:54,088 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7520 transitions. [2021-12-06 18:30:54,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7520 transitions. [2021-12-06 18:30:54,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:30:54,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7520 transitions. [2021-12-06 18:30:54,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.52380952380952) internal successors, (7520), 84 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:54,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:54,105 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:54,105 INFO L186 Difference]: Start difference. First operand has 441 places, 166 transitions, 1058 flow. Second operand 84 states and 7520 transitions. [2021-12-06 18:30:54,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 660 transitions, 7799 flow [2021-12-06 18:30:54,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 660 transitions, 6715 flow, removed 451 selfloop flow, removed 69 redundant places. [2021-12-06 18:30:54,223 INFO L242 Difference]: Finished difference. Result has 458 places, 172 transitions, 1142 flow [2021-12-06 18:30:54,223 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1142, PETRI_PLACES=458, PETRI_TRANSITIONS=172} [2021-12-06 18:30:54,224 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 301 predicate places. [2021-12-06 18:30:54,224 INFO L470 AbstractCegarLoop]: Abstraction has has 458 places, 172 transitions, 1142 flow [2021-12-06 18:30:54,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:54,224 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:30:54,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:30:54,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-12-06 18:30:54,224 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:30:54,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:54,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1969472343, now seen corresponding path program 5 times [2021-12-06 18:30:54,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:54,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056522907] [2021-12-06 18:30:54,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:54,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:54,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:54,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056522907] [2021-12-06 18:30:54,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056522907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:54,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:54,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:30:54,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742370032] [2021-12-06 18:30:54,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:54,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:30:54,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:54,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:30:54,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:30:54,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:30:54,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 172 transitions, 1142 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:54,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:30:54,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:30:54,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:31:02,731 INFO L129 PetriNetUnfolder]: 1179/3814 cut-off events. [2021-12-06 18:31:02,731 INFO L130 PetriNetUnfolder]: For 59592/59592 co-relation queries the response was YES. [2021-12-06 18:31:02,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20423 conditions, 3814 events. 1179/3814 cut-off events. For 59592/59592 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 29333 event pairs, 81 based on Foata normal form. 1/3765 useless extension candidates. Maximal degree in co-relation 20219. Up to 389 conditions per place. [2021-12-06 18:31:02,787 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 478 selfloop transitions, 29 changer transitions 163/741 dead transitions. [2021-12-06 18:31:02,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 741 transitions, 8722 flow [2021-12-06 18:31:02,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 18:31:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-06 18:31:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7507 transitions. [2021-12-06 18:31:02,791 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5136152162014231 [2021-12-06 18:31:02,791 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7507 transitions. [2021-12-06 18:31:02,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7507 transitions. [2021-12-06 18:31:02,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:31:02,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7507 transitions. [2021-12-06 18:31:02,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.36904761904762) internal successors, (7507), 84 states have internal predecessors, (7507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:02,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:02,803 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:02,803 INFO L186 Difference]: Start difference. First operand has 458 places, 172 transitions, 1142 flow. Second operand 84 states and 7507 transitions. [2021-12-06 18:31:02,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 741 transitions, 8722 flow [2021-12-06 18:31:02,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 741 transitions, 7848 flow, removed 346 selfloop flow, removed 69 redundant places. [2021-12-06 18:31:02,952 INFO L242 Difference]: Finished difference. Result has 477 places, 179 transitions, 1342 flow [2021-12-06 18:31:02,952 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1342, PETRI_PLACES=477, PETRI_TRANSITIONS=179} [2021-12-06 18:31:02,953 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 320 predicate places. [2021-12-06 18:31:02,953 INFO L470 AbstractCegarLoop]: Abstraction has has 477 places, 179 transitions, 1342 flow [2021-12-06 18:31:02,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:02,953 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:31:02,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:02,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-12-06 18:31:02,953 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:31:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:02,953 INFO L85 PathProgramCache]: Analyzing trace with hash -582153203, now seen corresponding path program 6 times [2021-12-06 18:31:02,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:02,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496507474] [2021-12-06 18:31:02,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:02,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:03,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:03,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496507474] [2021-12-06 18:31:03,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496507474] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:31:03,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:31:03,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:31:03,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147019731] [2021-12-06 18:31:03,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:31:03,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:31:03,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:31:03,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:31:03,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:31:03,428 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:31:03,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 179 transitions, 1342 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:03,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:31:03,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:31:03,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:31:14,521 INFO L129 PetriNetUnfolder]: 1270/4156 cut-off events. [2021-12-06 18:31:14,521 INFO L130 PetriNetUnfolder]: For 67510/67510 co-relation queries the response was YES. [2021-12-06 18:31:14,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23147 conditions, 4156 events. 1270/4156 cut-off events. For 67510/67510 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 32858 event pairs, 155 based on Foata normal form. 1/4071 useless extension candidates. Maximal degree in co-relation 22934. Up to 895 conditions per place. [2021-12-06 18:31:14,588 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 446 selfloop transitions, 30 changer transitions 156/703 dead transitions. [2021-12-06 18:31:14,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 703 transitions, 9750 flow [2021-12-06 18:31:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 18:31:14,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-06 18:31:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7522 transitions. [2021-12-06 18:31:14,592 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5146414887794198 [2021-12-06 18:31:14,592 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7522 transitions. [2021-12-06 18:31:14,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7522 transitions. [2021-12-06 18:31:14,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:31:14,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7522 transitions. [2021-12-06 18:31:14,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.54761904761905) internal successors, (7522), 84 states have internal predecessors, (7522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:14,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:14,605 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:14,605 INFO L186 Difference]: Start difference. First operand has 477 places, 179 transitions, 1342 flow. Second operand 84 states and 7522 transitions. [2021-12-06 18:31:14,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 703 transitions, 9750 flow [2021-12-06 18:31:14,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 703 transitions, 8431 flow, removed 565 selfloop flow, removed 64 redundant places. [2021-12-06 18:31:14,837 INFO L242 Difference]: Finished difference. Result has 501 places, 186 transitions, 1487 flow [2021-12-06 18:31:14,837 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1487, PETRI_PLACES=501, PETRI_TRANSITIONS=186} [2021-12-06 18:31:14,837 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 344 predicate places. [2021-12-06 18:31:14,837 INFO L470 AbstractCegarLoop]: Abstraction has has 501 places, 186 transitions, 1487 flow [2021-12-06 18:31:14,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:14,838 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:31:14,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:14,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-12-06 18:31:14,838 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:31:14,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:14,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1708664579, now seen corresponding path program 7 times [2021-12-06 18:31:14,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:14,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184128663] [2021-12-06 18:31:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:14,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:15,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:15,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184128663] [2021-12-06 18:31:15,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184128663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:31:15,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:31:15,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:31:15,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132005108] [2021-12-06 18:31:15,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:31:15,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:31:15,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:31:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:31:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:31:15,283 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:31:15,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 186 transitions, 1487 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:15,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:31:15,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:31:15,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:31:24,575 INFO L129 PetriNetUnfolder]: 1410/4535 cut-off events. [2021-12-06 18:31:24,575 INFO L130 PetriNetUnfolder]: For 99966/99970 co-relation queries the response was YES. [2021-12-06 18:31:24,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27862 conditions, 4535 events. 1410/4535 cut-off events. For 99966/99970 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 36565 event pairs, 213 based on Foata normal form. 1/4466 useless extension candidates. Maximal degree in co-relation 27635. Up to 618 conditions per place. [2021-12-06 18:31:24,651 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 494 selfloop transitions, 31 changer transitions 168/764 dead transitions. [2021-12-06 18:31:24,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 764 transitions, 10865 flow [2021-12-06 18:31:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 18:31:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-06 18:31:24,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7505 transitions. [2021-12-06 18:31:24,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5134783798576902 [2021-12-06 18:31:24,655 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7505 transitions. [2021-12-06 18:31:24,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7505 transitions. [2021-12-06 18:31:24,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:31:24,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7505 transitions. [2021-12-06 18:31:24,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.3452380952381) internal successors, (7505), 84 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:24,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:24,668 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:24,668 INFO L186 Difference]: Start difference. First operand has 501 places, 186 transitions, 1487 flow. Second operand 84 states and 7505 transitions. [2021-12-06 18:31:24,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 764 transitions, 10865 flow [2021-12-06 18:31:24,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 764 transitions, 9809 flow, removed 434 selfloop flow, removed 63 redundant places. [2021-12-06 18:31:24,990 INFO L242 Difference]: Finished difference. Result has 528 places, 194 transitions, 1772 flow [2021-12-06 18:31:24,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1772, PETRI_PLACES=528, PETRI_TRANSITIONS=194} [2021-12-06 18:31:24,990 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 371 predicate places. [2021-12-06 18:31:24,990 INFO L470 AbstractCegarLoop]: Abstraction has has 528 places, 194 transitions, 1772 flow [2021-12-06 18:31:24,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:24,991 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:31:24,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:24,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-12-06 18:31:24,991 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:31:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:24,991 INFO L85 PathProgramCache]: Analyzing trace with hash 222292237, now seen corresponding path program 8 times [2021-12-06 18:31:24,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:24,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591338822] [2021-12-06 18:31:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:24,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:25,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:25,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591338822] [2021-12-06 18:31:25,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591338822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:31:25,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:31:25,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:31:25,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758383651] [2021-12-06 18:31:25,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:31:25,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:31:25,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:31:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:31:25,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:31:25,401 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2021-12-06 18:31:25,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 194 transitions, 1772 flow. Second operand has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:25,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:31:25,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2021-12-06 18:31:25,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:31:33,168 INFO L129 PetriNetUnfolder]: 2067/6874 cut-off events. [2021-12-06 18:31:33,168 INFO L130 PetriNetUnfolder]: For 201673/201674 co-relation queries the response was YES. [2021-12-06 18:31:33,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45912 conditions, 6874 events. 2067/6874 cut-off events. For 201673/201674 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 63045 event pairs, 212 based on Foata normal form. 3/6734 useless extension candidates. Maximal degree in co-relation 45668. Up to 1815 conditions per place. [2021-12-06 18:31:33,294 INFO L132 encePairwiseOnDemand]: 139/174 looper letters, 419 selfloop transitions, 34 changer transitions 193/731 dead transitions. [2021-12-06 18:31:33,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 731 transitions, 13214 flow [2021-12-06 18:31:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-12-06 18:31:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-12-06 18:31:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 7681 transitions. [2021-12-06 18:31:33,299 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.580837870538415 [2021-12-06 18:31:33,299 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 7681 transitions. [2021-12-06 18:31:33,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 7681 transitions. [2021-12-06 18:31:33,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:31:33,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 7681 transitions. [2021-12-06 18:31:33,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 101.0657894736842) internal successors, (7681), 76 states have internal predecessors, (7681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:33,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 174.0) internal successors, (13398), 77 states have internal predecessors, (13398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:33,311 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 174.0) internal successors, (13398), 77 states have internal predecessors, (13398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:33,311 INFO L186 Difference]: Start difference. First operand has 528 places, 194 transitions, 1772 flow. Second operand 76 states and 7681 transitions. [2021-12-06 18:31:33,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 731 transitions, 13214 flow [2021-12-06 18:31:33,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 731 transitions, 11410 flow, removed 841 selfloop flow, removed 64 redundant places. [2021-12-06 18:31:33,785 INFO L242 Difference]: Finished difference. Result has 546 places, 217 transitions, 2358 flow [2021-12-06 18:31:33,785 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=2358, PETRI_PLACES=546, PETRI_TRANSITIONS=217} [2021-12-06 18:31:33,785 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 389 predicate places. [2021-12-06 18:31:33,785 INFO L470 AbstractCegarLoop]: Abstraction has has 546 places, 217 transitions, 2358 flow [2021-12-06 18:31:33,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:33,786 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:31:33,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:33,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-12-06 18:31:33,786 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:31:33,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:33,786 INFO L85 PathProgramCache]: Analyzing trace with hash 541617191, now seen corresponding path program 9 times [2021-12-06 18:31:33,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:33,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494487005] [2021-12-06 18:31:33,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:33,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:34,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:34,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494487005] [2021-12-06 18:31:34,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494487005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:31:34,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:31:34,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:31:34,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769062294] [2021-12-06 18:31:34,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:31:34,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:31:34,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:31:34,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:31:34,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:31:34,279 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:31:34,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 217 transitions, 2358 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:34,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:31:34,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:31:34,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:31:52,026 INFO L129 PetriNetUnfolder]: 2307/7302 cut-off events. [2021-12-06 18:31:52,026 INFO L130 PetriNetUnfolder]: For 287340/287344 co-relation queries the response was YES. [2021-12-06 18:31:52,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55873 conditions, 7302 events. 2307/7302 cut-off events. For 287340/287344 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 66870 event pairs, 447 based on Foata normal form. 1/7202 useless extension candidates. Maximal degree in co-relation 55613. Up to 1791 conditions per place. [2021-12-06 18:31:52,176 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 527 selfloop transitions, 33 changer transitions 178/809 dead transitions. [2021-12-06 18:31:52,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 809 transitions, 15275 flow [2021-12-06 18:31:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 18:31:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-06 18:31:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7504 transitions. [2021-12-06 18:31:52,181 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5134099616858238 [2021-12-06 18:31:52,181 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7504 transitions. [2021-12-06 18:31:52,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7504 transitions. [2021-12-06 18:31:52,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:31:52,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7504 transitions. [2021-12-06 18:31:52,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.33333333333333) internal successors, (7504), 84 states have internal predecessors, (7504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:52,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:52,193 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:52,193 INFO L186 Difference]: Start difference. First operand has 546 places, 217 transitions, 2358 flow. Second operand 84 states and 7504 transitions. [2021-12-06 18:31:52,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 809 transitions, 15275 flow [2021-12-06 18:31:53,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 809 transitions, 14028 flow, removed 578 selfloop flow, removed 37 redundant places. [2021-12-06 18:31:53,048 INFO L242 Difference]: Finished difference. Result has 608 places, 226 transitions, 2768 flow [2021-12-06 18:31:53,048 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2768, PETRI_PLACES=608, PETRI_TRANSITIONS=226} [2021-12-06 18:31:53,048 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 451 predicate places. [2021-12-06 18:31:53,048 INFO L470 AbstractCegarLoop]: Abstraction has has 608 places, 226 transitions, 2768 flow [2021-12-06 18:31:53,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:53,049 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:31:53,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:31:53,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-12-06 18:31:53,049 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:31:53,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:31:53,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1439845311, now seen corresponding path program 10 times [2021-12-06 18:31:53,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:31:53,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840591436] [2021-12-06 18:31:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:31:53,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:31:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:31:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:31:53,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:31:53,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840591436] [2021-12-06 18:31:53,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840591436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:31:53,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:31:53,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:31:53,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413876360] [2021-12-06 18:31:53,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:31:53,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:31:53,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:31:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:31:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:31:53,435 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:31:53,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 226 transitions, 2768 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:53,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:31:53,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:31:53,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:32:08,186 INFO L129 PetriNetUnfolder]: 2542/8037 cut-off events. [2021-12-06 18:32:08,186 INFO L130 PetriNetUnfolder]: For 434442/434454 co-relation queries the response was YES. [2021-12-06 18:32:08,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68956 conditions, 8037 events. 2542/8037 cut-off events. For 434442/434454 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 74568 event pairs, 1320 based on Foata normal form. 1/7834 useless extension candidates. Maximal degree in co-relation 68656. Up to 1719 conditions per place. [2021-12-06 18:32:08,371 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 472 selfloop transitions, 28 changer transitions 166/737 dead transitions. [2021-12-06 18:32:08,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 737 transitions, 16083 flow [2021-12-06 18:32:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 18:32:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-06 18:32:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7543 transitions. [2021-12-06 18:32:08,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5160782703886152 [2021-12-06 18:32:08,376 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7543 transitions. [2021-12-06 18:32:08,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7543 transitions. [2021-12-06 18:32:08,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:32:08,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7543 transitions. [2021-12-06 18:32:08,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.79761904761905) internal successors, (7543), 84 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:08,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:08,388 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:08,389 INFO L186 Difference]: Start difference. First operand has 608 places, 226 transitions, 2768 flow. Second operand 84 states and 7543 transitions. [2021-12-06 18:32:08,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 737 transitions, 16083 flow [2021-12-06 18:32:09,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 737 transitions, 13683 flow, removed 1104 selfloop flow, removed 67 redundant places. [2021-12-06 18:32:09,690 INFO L242 Difference]: Finished difference. Result has 637 places, 239 transitions, 3124 flow [2021-12-06 18:32:09,691 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2487, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3124, PETRI_PLACES=637, PETRI_TRANSITIONS=239} [2021-12-06 18:32:09,691 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 480 predicate places. [2021-12-06 18:32:09,691 INFO L470 AbstractCegarLoop]: Abstraction has has 637 places, 239 transitions, 3124 flow [2021-12-06 18:32:09,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:09,691 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:32:09,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:09,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-12-06 18:32:09,692 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:32:09,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:09,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2083302891, now seen corresponding path program 11 times [2021-12-06 18:32:09,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:09,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200974315] [2021-12-06 18:32:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:09,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:32:10,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:10,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200974315] [2021-12-06 18:32:10,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200974315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:32:10,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:32:10,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:32:10,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943536809] [2021-12-06 18:32:10,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:32:10,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:32:10,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:10,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:32:10,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:32:10,140 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:32:10,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 239 transitions, 3124 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:10,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:32:10,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:32:10,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:32:25,234 INFO L129 PetriNetUnfolder]: 2733/8673 cut-off events. [2021-12-06 18:32:25,234 INFO L130 PetriNetUnfolder]: For 523617/523617 co-relation queries the response was YES. [2021-12-06 18:32:25,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77774 conditions, 8673 events. 2733/8673 cut-off events. For 523617/523617 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 82705 event pairs, 774 based on Foata normal form. 1/8569 useless extension candidates. Maximal degree in co-relation 77455. Up to 2841 conditions per place. [2021-12-06 18:32:25,453 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 546 selfloop transitions, 32 changer transitions 183/832 dead transitions. [2021-12-06 18:32:25,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 832 transitions, 18645 flow [2021-12-06 18:32:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 18:32:25,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-06 18:32:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7516 transitions. [2021-12-06 18:32:25,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5142309797482211 [2021-12-06 18:32:25,458 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7516 transitions. [2021-12-06 18:32:25,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7516 transitions. [2021-12-06 18:32:25,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:32:25,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7516 transitions. [2021-12-06 18:32:25,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.47619047619048) internal successors, (7516), 84 states have internal predecessors, (7516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:25,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:25,470 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:25,470 INFO L186 Difference]: Start difference. First operand has 637 places, 239 transitions, 3124 flow. Second operand 84 states and 7516 transitions. [2021-12-06 18:32:25,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 832 transitions, 18645 flow [2021-12-06 18:32:27,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 832 transitions, 15998 flow, removed 1300 selfloop flow, removed 67 redundant places. [2021-12-06 18:32:27,118 INFO L242 Difference]: Finished difference. Result has 664 places, 249 transitions, 3528 flow [2021-12-06 18:32:27,119 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3528, PETRI_PLACES=664, PETRI_TRANSITIONS=249} [2021-12-06 18:32:27,119 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 507 predicate places. [2021-12-06 18:32:27,119 INFO L470 AbstractCegarLoop]: Abstraction has has 664 places, 249 transitions, 3528 flow [2021-12-06 18:32:27,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:27,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:32:27,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:27,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-12-06 18:32:27,120 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:32:27,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:27,120 INFO L85 PathProgramCache]: Analyzing trace with hash -392905301, now seen corresponding path program 12 times [2021-12-06 18:32:27,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:27,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634232006] [2021-12-06 18:32:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:27,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:32:27,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:27,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634232006] [2021-12-06 18:32:27,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634232006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:32:27,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:32:27,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:32:27,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587451254] [2021-12-06 18:32:27,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:32:27,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:32:27,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:27,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:32:27,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:32:27,538 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:32:27,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 249 transitions, 3528 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:27,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:32:27,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:32:27,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:32:43,122 INFO L129 PetriNetUnfolder]: 3022/9315 cut-off events. [2021-12-06 18:32:43,122 INFO L130 PetriNetUnfolder]: For 634230/634234 co-relation queries the response was YES. [2021-12-06 18:32:43,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88548 conditions, 9315 events. 3022/9315 cut-off events. For 634230/634234 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 87914 event pairs, 2020 based on Foata normal form. 1/9121 useless extension candidates. Maximal degree in co-relation 88215. Up to 2317 conditions per place. [2021-12-06 18:32:43,379 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 487 selfloop transitions, 30 changer transitions 146/734 dead transitions. [2021-12-06 18:32:43,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 734 transitions, 17749 flow [2021-12-06 18:32:43,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 18:32:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-06 18:32:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7545 transitions. [2021-12-06 18:32:43,383 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5162151067323482 [2021-12-06 18:32:43,383 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7545 transitions. [2021-12-06 18:32:43,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7545 transitions. [2021-12-06 18:32:43,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:32:43,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7545 transitions. [2021-12-06 18:32:43,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.82142857142857) internal successors, (7545), 84 states have internal predecessors, (7545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:43,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:43,396 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:43,396 INFO L186 Difference]: Start difference. First operand has 664 places, 249 transitions, 3528 flow. Second operand 84 states and 7545 transitions. [2021-12-06 18:32:43,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 734 transitions, 17749 flow [2021-12-06 18:32:45,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 734 transitions, 15075 flow, removed 1274 selfloop flow, removed 65 redundant places. [2021-12-06 18:32:45,658 INFO L242 Difference]: Finished difference. Result has 696 places, 262 transitions, 3945 flow [2021-12-06 18:32:45,658 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3945, PETRI_PLACES=696, PETRI_TRANSITIONS=262} [2021-12-06 18:32:45,658 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 539 predicate places. [2021-12-06 18:32:45,658 INFO L470 AbstractCegarLoop]: Abstraction has has 696 places, 262 transitions, 3945 flow [2021-12-06 18:32:45,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:45,659 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:32:45,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:32:45,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-12-06 18:32:45,659 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:32:45,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:32:45,659 INFO L85 PathProgramCache]: Analyzing trace with hash -822799289, now seen corresponding path program 13 times [2021-12-06 18:32:45,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:32:45,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759240458] [2021-12-06 18:32:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:32:45,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:32:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:32:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:32:46,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:32:46,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759240458] [2021-12-06 18:32:46,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759240458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:32:46,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:32:46,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:32:46,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051534809] [2021-12-06 18:32:46,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:32:46,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:32:46,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:32:46,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:32:46,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:32:46,090 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:32:46,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 262 transitions, 3945 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:46,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:32:46,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:32:46,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:32:58,755 INFO L129 PetriNetUnfolder]: 3601/11490 cut-off events. [2021-12-06 18:32:58,755 INFO L130 PetriNetUnfolder]: For 895291/895300 co-relation queries the response was YES. [2021-12-06 18:32:59,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115171 conditions, 11490 events. 3601/11490 cut-off events. For 895291/895300 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 115957 event pairs, 593 based on Foata normal form. 4/11323 useless extension candidates. Maximal degree in co-relation 114817. Up to 4041 conditions per place. [2021-12-06 18:32:59,076 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 613 selfloop transitions, 55 changer transitions 123/862 dead transitions. [2021-12-06 18:32:59,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 862 transitions, 23405 flow [2021-12-06 18:32:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-06 18:32:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-12-06 18:32:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5448 transitions. [2021-12-06 18:32:59,080 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5218390804597701 [2021-12-06 18:32:59,080 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5448 transitions. [2021-12-06 18:32:59,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5448 transitions. [2021-12-06 18:32:59,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:32:59,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5448 transitions. [2021-12-06 18:32:59,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 90.8) internal successors, (5448), 60 states have internal predecessors, (5448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:59,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:59,091 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:32:59,091 INFO L186 Difference]: Start difference. First operand has 696 places, 262 transitions, 3945 flow. Second operand 60 states and 5448 transitions. [2021-12-06 18:32:59,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 862 transitions, 23405 flow [2021-12-06 18:33:01,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 862 transitions, 19818 flow, removed 1782 selfloop flow, removed 69 redundant places. [2021-12-06 18:33:01,907 INFO L242 Difference]: Finished difference. Result has 674 places, 294 transitions, 5166 flow [2021-12-06 18:33:01,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3635, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=5166, PETRI_PLACES=674, PETRI_TRANSITIONS=294} [2021-12-06 18:33:01,908 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 517 predicate places. [2021-12-06 18:33:01,908 INFO L470 AbstractCegarLoop]: Abstraction has has 674 places, 294 transitions, 5166 flow [2021-12-06 18:33:01,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:01,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:33:01,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:01,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-12-06 18:33:01,909 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:33:01,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:01,910 INFO L85 PathProgramCache]: Analyzing trace with hash -714346219, now seen corresponding path program 14 times [2021-12-06 18:33:01,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:01,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640879911] [2021-12-06 18:33:01,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:01,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:33:02,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:02,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640879911] [2021-12-06 18:33:02,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640879911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:33:02,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:33:02,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:33:02,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152088377] [2021-12-06 18:33:02,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:33:02,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:33:02,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:02,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:33:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:33:02,359 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:33:02,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 294 transitions, 5166 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:02,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:33:02,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:33:02,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:33:14,920 INFO L129 PetriNetUnfolder]: 3628/11181 cut-off events. [2021-12-06 18:33:14,920 INFO L130 PetriNetUnfolder]: For 844565/844569 co-relation queries the response was YES. [2021-12-06 18:33:15,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113404 conditions, 11181 events. 3628/11181 cut-off events. For 844565/844569 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 111509 event pairs, 1533 based on Foata normal form. 1/10887 useless extension candidates. Maximal degree in co-relation 113062. Up to 4166 conditions per place. [2021-12-06 18:33:15,228 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 895 selfloop transitions, 51 changer transitions 176/1193 dead transitions. [2021-12-06 18:33:15,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 721 places, 1193 transitions, 30471 flow [2021-12-06 18:33:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 18:33:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-06 18:33:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7490 transitions. [2021-12-06 18:33:15,233 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5124521072796935 [2021-12-06 18:33:15,233 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7490 transitions. [2021-12-06 18:33:15,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7490 transitions. [2021-12-06 18:33:15,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:33:15,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7490 transitions. [2021-12-06 18:33:15,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.16666666666667) internal successors, (7490), 84 states have internal predecessors, (7490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:15,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:15,245 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:15,245 INFO L186 Difference]: Start difference. First operand has 674 places, 294 transitions, 5166 flow. Second operand 84 states and 7490 transitions. [2021-12-06 18:33:15,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 721 places, 1193 transitions, 30471 flow [2021-12-06 18:33:18,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 1193 transitions, 27545 flow, removed 1424 selfloop flow, removed 42 redundant places. [2021-12-06 18:33:18,369 INFO L242 Difference]: Finished difference. Result has 758 places, 307 transitions, 5329 flow [2021-12-06 18:33:18,369 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4444, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=5329, PETRI_PLACES=758, PETRI_TRANSITIONS=307} [2021-12-06 18:33:18,369 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 601 predicate places. [2021-12-06 18:33:18,369 INFO L470 AbstractCegarLoop]: Abstraction has has 758 places, 307 transitions, 5329 flow [2021-12-06 18:33:18,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:18,370 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:33:18,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:18,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-12-06 18:33:18,370 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:33:18,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash 443723611, now seen corresponding path program 15 times [2021-12-06 18:33:18,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:18,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783165139] [2021-12-06 18:33:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:18,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:33:18,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:18,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783165139] [2021-12-06 18:33:18,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783165139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:33:18,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:33:18,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:33:18,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829818202] [2021-12-06 18:33:18,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:33:18,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:33:18,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:18,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:33:18,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:33:18,813 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:33:18,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 307 transitions, 5329 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:18,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:33:18,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:33:18,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:33:32,264 INFO L129 PetriNetUnfolder]: 3633/11229 cut-off events. [2021-12-06 18:33:32,264 INFO L130 PetriNetUnfolder]: For 890864/890868 co-relation queries the response was YES. [2021-12-06 18:33:32,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116554 conditions, 11229 events. 3633/11229 cut-off events. For 890864/890868 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 111815 event pairs, 1138 based on Foata normal form. 1/11106 useless extension candidates. Maximal degree in co-relation 116169. Up to 4041 conditions per place. [2021-12-06 18:33:32,650 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 671 selfloop transitions, 47 changer transitions 188/977 dead transitions. [2021-12-06 18:33:32,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 776 places, 977 transitions, 25365 flow [2021-12-06 18:33:32,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-06 18:33:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-06 18:33:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7515 transitions. [2021-12-06 18:33:32,654 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5141625615763546 [2021-12-06 18:33:32,654 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7515 transitions. [2021-12-06 18:33:32,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7515 transitions. [2021-12-06 18:33:32,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:33:32,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7515 transitions. [2021-12-06 18:33:32,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.46428571428571) internal successors, (7515), 84 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:32,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:32,666 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:32,666 INFO L186 Difference]: Start difference. First operand has 758 places, 307 transitions, 5329 flow. Second operand 84 states and 7515 transitions. [2021-12-06 18:33:32,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 776 places, 977 transitions, 25365 flow [2021-12-06 18:33:36,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 707 places, 977 transitions, 23152 flow, removed 1096 selfloop flow, removed 69 redundant places. [2021-12-06 18:33:36,521 INFO L242 Difference]: Finished difference. Result has 783 places, 317 transitions, 5784 flow [2021-12-06 18:33:36,522 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5018, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=5784, PETRI_PLACES=783, PETRI_TRANSITIONS=317} [2021-12-06 18:33:36,522 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 626 predicate places. [2021-12-06 18:33:36,522 INFO L470 AbstractCegarLoop]: Abstraction has has 783 places, 317 transitions, 5784 flow [2021-12-06 18:33:36,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:36,522 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:33:36,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:36,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-12-06 18:33:36,523 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:33:36,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash -650216599, now seen corresponding path program 16 times [2021-12-06 18:33:36,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:36,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560693432] [2021-12-06 18:33:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:36,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:33:37,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:37,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560693432] [2021-12-06 18:33:37,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560693432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:33:37,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:33:37,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:33:37,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189128938] [2021-12-06 18:33:37,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:33:37,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:33:37,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:37,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:33:37,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:33:37,017 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:33:37,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 783 places, 317 transitions, 5784 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:37,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:33:37,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:33:37,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:33:52,805 INFO L129 PetriNetUnfolder]: 3687/11329 cut-off events. [2021-12-06 18:33:52,805 INFO L130 PetriNetUnfolder]: For 983139/983175 co-relation queries the response was YES. [2021-12-06 18:33:53,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121159 conditions, 11329 events. 3687/11329 cut-off events. For 983139/983175 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 113205 event pairs, 1633 based on Foata normal form. 3/11037 useless extension candidates. Maximal degree in co-relation 120763. Up to 4166 conditions per place. [2021-12-06 18:33:53,203 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 796 selfloop transitions, 55 changer transitions 162/1084 dead transitions. [2021-12-06 18:33:53,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 797 places, 1084 transitions, 29949 flow [2021-12-06 18:33:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:33:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:33:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7167 transitions. [2021-12-06 18:33:53,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5148706896551725 [2021-12-06 18:33:53,207 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7167 transitions. [2021-12-06 18:33:53,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7167 transitions. [2021-12-06 18:33:53,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:33:53,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7167 transitions. [2021-12-06 18:33:53,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.5875) internal successors, (7167), 80 states have internal predecessors, (7167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:53,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:53,219 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:53,219 INFO L186 Difference]: Start difference. First operand has 783 places, 317 transitions, 5784 flow. Second operand 80 states and 7167 transitions. [2021-12-06 18:33:53,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 797 places, 1084 transitions, 29949 flow [2021-12-06 18:33:57,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 1084 transitions, 26427 flow, removed 1718 selfloop flow, removed 72 redundant places. [2021-12-06 18:33:57,227 INFO L242 Difference]: Finished difference. Result has 788 places, 323 transitions, 5930 flow [2021-12-06 18:33:57,227 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5414, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=5930, PETRI_PLACES=788, PETRI_TRANSITIONS=323} [2021-12-06 18:33:57,227 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 631 predicate places. [2021-12-06 18:33:57,227 INFO L470 AbstractCegarLoop]: Abstraction has has 788 places, 323 transitions, 5930 flow [2021-12-06 18:33:57,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:57,228 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:33:57,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:57,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-12-06 18:33:57,228 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:33:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash 868374881, now seen corresponding path program 17 times [2021-12-06 18:33:57,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:57,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048073268] [2021-12-06 18:33:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:57,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:33:57,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:57,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048073268] [2021-12-06 18:33:57,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048073268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:33:57,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:33:57,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:33:57,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393634423] [2021-12-06 18:33:57,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:33:57,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:33:57,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:57,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:33:57,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:33:57,655 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:33:57,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 788 places, 323 transitions, 5930 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:33:57,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:33:57,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:33:57,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:34:13,505 INFO L129 PetriNetUnfolder]: 3774/11661 cut-off events. [2021-12-06 18:34:13,505 INFO L130 PetriNetUnfolder]: For 822960/822985 co-relation queries the response was YES. [2021-12-06 18:34:13,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116837 conditions, 11661 events. 3774/11661 cut-off events. For 822960/822985 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 117090 event pairs, 1259 based on Foata normal form. 3/11531 useless extension candidates. Maximal degree in co-relation 116443. Up to 4214 conditions per place. [2021-12-06 18:34:13,936 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 648 selfloop transitions, 53 changer transitions 168/940 dead transitions. [2021-12-06 18:34:13,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 940 transitions, 22495 flow [2021-12-06 18:34:13,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:34:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:34:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7191 transitions. [2021-12-06 18:34:13,941 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5165948275862069 [2021-12-06 18:34:13,941 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7191 transitions. [2021-12-06 18:34:13,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7191 transitions. [2021-12-06 18:34:13,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:34:13,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7191 transitions. [2021-12-06 18:34:13,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.8875) internal successors, (7191), 80 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:13,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:13,955 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:13,955 INFO L186 Difference]: Start difference. First operand has 788 places, 323 transitions, 5930 flow. Second operand 80 states and 7191 transitions. [2021-12-06 18:34:13,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 940 transitions, 22495 flow [2021-12-06 18:34:17,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 742 places, 940 transitions, 22074 flow, removed 116 selfloop flow, removed 65 redundant places. [2021-12-06 18:34:17,580 INFO L242 Difference]: Finished difference. Result has 805 places, 329 transitions, 6200 flow [2021-12-06 18:34:17,580 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5692, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=6200, PETRI_PLACES=805, PETRI_TRANSITIONS=329} [2021-12-06 18:34:17,581 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 648 predicate places. [2021-12-06 18:34:17,581 INFO L470 AbstractCegarLoop]: Abstraction has has 805 places, 329 transitions, 6200 flow [2021-12-06 18:34:17,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:17,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:34:17,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:34:17,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-12-06 18:34:17,581 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:34:17,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:34:17,583 INFO L85 PathProgramCache]: Analyzing trace with hash 614967945, now seen corresponding path program 18 times [2021-12-06 18:34:17,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:34:17,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395432120] [2021-12-06 18:34:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:34:17,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:34:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:34:18,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:34:18,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395432120] [2021-12-06 18:34:18,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395432120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:34:18,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:34:18,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:34:18,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992465801] [2021-12-06 18:34:18,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:34:18,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:34:18,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:34:18,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:34:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:34:18,026 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:34:18,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 329 transitions, 6200 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:18,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:34:18,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:34:18,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:34:34,679 INFO L129 PetriNetUnfolder]: 3848/11902 cut-off events. [2021-12-06 18:34:34,679 INFO L130 PetriNetUnfolder]: For 812051/812097 co-relation queries the response was YES. [2021-12-06 18:34:35,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120613 conditions, 11902 events. 3848/11902 cut-off events. For 812051/812097 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 120238 event pairs, 1602 based on Foata normal form. 3/11597 useless extension candidates. Maximal degree in co-relation 120212. Up to 4166 conditions per place. [2021-12-06 18:34:35,063 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 779 selfloop transitions, 55 changer transitions 167/1072 dead transitions. [2021-12-06 18:34:35,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 824 places, 1072 transitions, 28054 flow [2021-12-06 18:34:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:34:35,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:34:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7168 transitions. [2021-12-06 18:34:35,068 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2021-12-06 18:34:35,068 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7168 transitions. [2021-12-06 18:34:35,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7168 transitions. [2021-12-06 18:34:35,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:34:35,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7168 transitions. [2021-12-06 18:34:35,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.6) internal successors, (7168), 80 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:35,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:35,080 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:35,080 INFO L186 Difference]: Start difference. First operand has 805 places, 329 transitions, 6200 flow. Second operand 80 states and 7168 transitions. [2021-12-06 18:34:35,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 824 places, 1072 transitions, 28054 flow [2021-12-06 18:34:38,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 1072 transitions, 27161 flow, removed 382 selfloop flow, removed 65 redundant places. [2021-12-06 18:34:38,972 INFO L242 Difference]: Finished difference. Result has 824 places, 336 transitions, 6543 flow [2021-12-06 18:34:38,973 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5959, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=6543, PETRI_PLACES=824, PETRI_TRANSITIONS=336} [2021-12-06 18:34:38,973 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 667 predicate places. [2021-12-06 18:34:38,973 INFO L470 AbstractCegarLoop]: Abstraction has has 824 places, 336 transitions, 6543 flow [2021-12-06 18:34:38,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:38,973 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:34:38,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:34:38,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-12-06 18:34:38,974 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:34:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:34:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash -978116519, now seen corresponding path program 19 times [2021-12-06 18:34:38,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:34:38,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404510308] [2021-12-06 18:34:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:34:38,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:34:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:34:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:34:39,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:34:39,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404510308] [2021-12-06 18:34:39,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404510308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:34:39,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:34:39,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:34:39,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611469488] [2021-12-06 18:34:39,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:34:39,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:34:39,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:34:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:34:39,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:34:39,391 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:34:39,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 336 transitions, 6543 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:39,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:34:39,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:34:39,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:34:56,074 INFO L129 PetriNetUnfolder]: 3949/12228 cut-off events. [2021-12-06 18:34:56,074 INFO L130 PetriNetUnfolder]: For 951400/951438 co-relation queries the response was YES. [2021-12-06 18:34:56,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128490 conditions, 12228 events. 3949/12228 cut-off events. For 951400/951438 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 124207 event pairs, 1378 based on Foata normal form. 3/12080 useless extension candidates. Maximal degree in co-relation 128080. Up to 4417 conditions per place. [2021-12-06 18:34:56,467 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 641 selfloop transitions, 57 changer transitions 173/942 dead transitions. [2021-12-06 18:34:56,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 942 transitions, 23860 flow [2021-12-06 18:34:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:34:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:34:56,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7192 transitions. [2021-12-06 18:34:56,471 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2021-12-06 18:34:56,471 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7192 transitions. [2021-12-06 18:34:56,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7192 transitions. [2021-12-06 18:34:56,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:34:56,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7192 transitions. [2021-12-06 18:34:56,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.9) internal successors, (7192), 80 states have internal predecessors, (7192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:56,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:56,483 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:34:56,483 INFO L186 Difference]: Start difference. First operand has 824 places, 336 transitions, 6543 flow. Second operand 80 states and 7192 transitions. [2021-12-06 18:34:56,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 942 transitions, 23860 flow [2021-12-06 18:35:01,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 777 places, 942 transitions, 22999 flow, removed 337 selfloop flow, removed 66 redundant places. [2021-12-06 18:35:01,187 INFO L242 Difference]: Finished difference. Result has 842 places, 343 transitions, 6861 flow [2021-12-06 18:35:01,187 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6280, PETRI_DIFFERENCE_MINUEND_PLACES=698, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=6861, PETRI_PLACES=842, PETRI_TRANSITIONS=343} [2021-12-06 18:35:01,188 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 685 predicate places. [2021-12-06 18:35:01,188 INFO L470 AbstractCegarLoop]: Abstraction has has 842 places, 343 transitions, 6861 flow [2021-12-06 18:35:01,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:01,188 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:35:01,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:35:01,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-12-06 18:35:01,188 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:35:01,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:01,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1035899759, now seen corresponding path program 20 times [2021-12-06 18:35:01,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:01,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616248969] [2021-12-06 18:35:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:01,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:35:01,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:35:01,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616248969] [2021-12-06 18:35:01,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616248969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:35:01,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:35:01,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:35:01,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625238280] [2021-12-06 18:35:01,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:35:01,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:35:01,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:35:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:35:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:35:01,650 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:35:01,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 842 places, 343 transitions, 6861 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:01,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:35:01,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:35:01,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:35:18,364 INFO L129 PetriNetUnfolder]: 4038/12496 cut-off events. [2021-12-06 18:35:18,364 INFO L130 PetriNetUnfolder]: For 928589/928653 co-relation queries the response was YES. [2021-12-06 18:35:18,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132150 conditions, 12496 events. 4038/12496 cut-off events. For 928589/928653 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 127578 event pairs, 1800 based on Foata normal form. 3/12171 useless extension candidates. Maximal degree in co-relation 131732. Up to 4166 conditions per place. [2021-12-06 18:35:18,826 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 759 selfloop transitions, 54 changer transitions 172/1056 dead transitions. [2021-12-06 18:35:18,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 861 places, 1056 transitions, 28740 flow [2021-12-06 18:35:18,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:35:18,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:35:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7168 transitions. [2021-12-06 18:35:18,830 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2021-12-06 18:35:18,830 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7168 transitions. [2021-12-06 18:35:18,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7168 transitions. [2021-12-06 18:35:18,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:35:18,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7168 transitions. [2021-12-06 18:35:18,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.6) internal successors, (7168), 80 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:18,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:18,842 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:18,842 INFO L186 Difference]: Start difference. First operand has 842 places, 343 transitions, 6861 flow. Second operand 80 states and 7168 transitions. [2021-12-06 18:35:18,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 861 places, 1056 transitions, 28740 flow [2021-12-06 18:35:23,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 795 places, 1056 transitions, 27708 flow, removed 452 selfloop flow, removed 66 redundant places. [2021-12-06 18:35:23,382 INFO L242 Difference]: Finished difference. Result has 862 places, 351 transitions, 7252 flow [2021-12-06 18:35:23,382 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6595, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=7252, PETRI_PLACES=862, PETRI_TRANSITIONS=351} [2021-12-06 18:35:23,382 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 705 predicate places. [2021-12-06 18:35:23,383 INFO L470 AbstractCegarLoop]: Abstraction has has 862 places, 351 transitions, 7252 flow [2021-12-06 18:35:23,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:23,383 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:35:23,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:35:23,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-12-06 18:35:23,383 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:35:23,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:23,384 INFO L85 PathProgramCache]: Analyzing trace with hash -654598799, now seen corresponding path program 21 times [2021-12-06 18:35:23,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:23,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030664632] [2021-12-06 18:35:23,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:23,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:35:23,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:35:23,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030664632] [2021-12-06 18:35:23,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030664632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:35:23,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:35:23,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:35:23,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228723997] [2021-12-06 18:35:23,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:35:23,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:35:23,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:35:23,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:35:23,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:35:23,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:35:23,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 862 places, 351 transitions, 7252 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:23,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:35:23,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:35:23,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:35:46,875 INFO L129 PetriNetUnfolder]: 4153/12890 cut-off events. [2021-12-06 18:35:46,875 INFO L130 PetriNetUnfolder]: For 1102420/1102479 co-relation queries the response was YES. [2021-12-06 18:35:47,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141848 conditions, 12890 events. 4153/12890 cut-off events. For 1102420/1102479 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 132550 event pairs, 1540 based on Foata normal form. 3/12716 useless extension candidates. Maximal degree in co-relation 141420. Up to 4650 conditions per place. [2021-12-06 18:35:47,319 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 639 selfloop transitions, 59 changer transitions 178/947 dead transitions. [2021-12-06 18:35:47,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 947 transitions, 25343 flow [2021-12-06 18:35:47,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:35:47,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:35:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7192 transitions. [2021-12-06 18:35:47,324 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2021-12-06 18:35:47,324 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7192 transitions. [2021-12-06 18:35:47,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7192 transitions. [2021-12-06 18:35:47,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:35:47,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7192 transitions. [2021-12-06 18:35:47,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.9) internal successors, (7192), 80 states have internal predecessors, (7192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:47,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:47,336 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:47,336 INFO L186 Difference]: Start difference. First operand has 862 places, 351 transitions, 7252 flow. Second operand 80 states and 7192 transitions. [2021-12-06 18:35:47,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 947 transitions, 25343 flow [2021-12-06 18:35:53,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 814 places, 947 transitions, 24034 flow, removed 562 selfloop flow, removed 67 redundant places. [2021-12-06 18:35:53,605 INFO L242 Difference]: Finished difference. Result has 881 places, 359 transitions, 7633 flow [2021-12-06 18:35:53,606 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6960, PETRI_DIFFERENCE_MINUEND_PLACES=735, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=7633, PETRI_PLACES=881, PETRI_TRANSITIONS=359} [2021-12-06 18:35:53,606 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 724 predicate places. [2021-12-06 18:35:53,606 INFO L470 AbstractCegarLoop]: Abstraction has has 881 places, 359 transitions, 7633 flow [2021-12-06 18:35:53,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:53,606 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:35:53,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:35:53,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-12-06 18:35:53,606 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:35:53,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:53,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2097142613, now seen corresponding path program 22 times [2021-12-06 18:35:53,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:53,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340639204] [2021-12-06 18:35:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:53,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:35:54,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:35:54,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340639204] [2021-12-06 18:35:54,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340639204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:35:54,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:35:54,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:35:54,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188862215] [2021-12-06 18:35:54,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:35:54,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:35:54,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:35:54,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:35:54,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:35:54,061 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:35:54,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 881 places, 359 transitions, 7633 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:54,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:35:54,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:35:54,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:36:11,666 INFO L129 PetriNetUnfolder]: 4272/13269 cut-off events. [2021-12-06 18:36:11,666 INFO L130 PetriNetUnfolder]: For 1076249/1076296 co-relation queries the response was YES. [2021-12-06 18:36:12,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145504 conditions, 13269 events. 4272/13269 cut-off events. For 1076249/1076296 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 137407 event pairs, 1982 based on Foata normal form. 3/12923 useless extension candidates. Maximal degree in co-relation 145067. Up to 4166 conditions per place. [2021-12-06 18:36:12,132 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 735 selfloop transitions, 51 changer transitions 177/1034 dead transitions. [2021-12-06 18:36:12,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 900 places, 1034 transitions, 29120 flow [2021-12-06 18:36:12,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:36:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:36:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7169 transitions. [2021-12-06 18:36:12,137 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.515014367816092 [2021-12-06 18:36:12,137 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7169 transitions. [2021-12-06 18:36:12,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7169 transitions. [2021-12-06 18:36:12,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:36:12,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7169 transitions. [2021-12-06 18:36:12,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.6125) internal successors, (7169), 80 states have internal predecessors, (7169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:36:12,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:36:12,149 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:36:12,149 INFO L186 Difference]: Start difference. First operand has 881 places, 359 transitions, 7633 flow. Second operand 80 states and 7169 transitions. [2021-12-06 18:36:12,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 900 places, 1034 transitions, 29120 flow [2021-12-06 18:36:17,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 833 places, 1034 transitions, 27975 flow, removed 510 selfloop flow, removed 67 redundant places. [2021-12-06 18:36:17,821 INFO L242 Difference]: Finished difference. Result has 902 places, 368 transitions, 8066 flow [2021-12-06 18:36:17,821 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=7336, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=8066, PETRI_PLACES=902, PETRI_TRANSITIONS=368} [2021-12-06 18:36:17,821 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 745 predicate places. [2021-12-06 18:36:17,821 INFO L470 AbstractCegarLoop]: Abstraction has has 902 places, 368 transitions, 8066 flow [2021-12-06 18:36:17,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:36:17,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:36:17,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:36:17,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-12-06 18:36:17,822 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:36:17,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:36:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1216274075, now seen corresponding path program 23 times [2021-12-06 18:36:17,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:36:17,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992289569] [2021-12-06 18:36:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:36:17,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:36:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:36:18,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:36:18,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992289569] [2021-12-06 18:36:18,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992289569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:36:18,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:36:18,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:36:18,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390455703] [2021-12-06 18:36:18,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:36:18,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:36:18,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:36:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:36:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:36:18,263 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:36:18,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 902 places, 368 transitions, 8066 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:36:18,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:36:18,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:36:18,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:36:40,256 INFO L129 PetriNetUnfolder]: 4415/13673 cut-off events. [2021-12-06 18:36:40,256 INFO L130 PetriNetUnfolder]: For 1289850/1289913 co-relation queries the response was YES. [2021-12-06 18:36:40,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157469 conditions, 13673 events. 4415/13673 cut-off events. For 1289850/1289913 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 142417 event pairs, 1809 based on Foata normal form. 3/13481 useless extension candidates. Maximal degree in co-relation 157021. Up to 4943 conditions per place. [2021-12-06 18:36:40,744 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 656 selfloop transitions, 52 changer transitions 183/962 dead transitions. [2021-12-06 18:36:40,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 921 places, 962 transitions, 27151 flow [2021-12-06 18:36:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:36:40,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:36:40,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7193 transitions. [2021-12-06 18:36:40,749 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5167385057471264 [2021-12-06 18:36:40,749 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7193 transitions. [2021-12-06 18:36:40,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7193 transitions. [2021-12-06 18:36:40,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:36:40,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7193 transitions. [2021-12-06 18:36:40,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.9125) internal successors, (7193), 80 states have internal predecessors, (7193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:36:40,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:36:40,760 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:36:40,761 INFO L186 Difference]: Start difference. First operand has 902 places, 368 transitions, 8066 flow. Second operand 80 states and 7193 transitions. [2021-12-06 18:36:40,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 921 places, 962 transitions, 27151 flow [2021-12-06 18:36:47,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 853 places, 962 transitions, 25385 flow, removed 791 selfloop flow, removed 68 redundant places. [2021-12-06 18:36:47,792 INFO L242 Difference]: Finished difference. Result has 922 places, 377 transitions, 8477 flow [2021-12-06 18:36:47,792 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=7741, PETRI_DIFFERENCE_MINUEND_PLACES=774, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=8477, PETRI_PLACES=922, PETRI_TRANSITIONS=377} [2021-12-06 18:36:47,793 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 765 predicate places. [2021-12-06 18:36:47,793 INFO L470 AbstractCegarLoop]: Abstraction has has 922 places, 377 transitions, 8477 flow [2021-12-06 18:36:47,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:36:47,793 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:36:47,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:36:47,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-12-06 18:36:47,793 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:36:47,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:36:47,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1320148783, now seen corresponding path program 24 times [2021-12-06 18:36:47,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:36:47,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649067429] [2021-12-06 18:36:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:36:47,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:36:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:36:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:36:48,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:36:48,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649067429] [2021-12-06 18:36:48,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649067429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:36:48,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:36:48,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:36:48,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144273956] [2021-12-06 18:36:48,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:36:48,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:36:48,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:36:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:36:48,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:36:48,192 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:36:48,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 377 transitions, 8477 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:36:48,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:36:48,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:36:48,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:37:05,085 INFO L129 PetriNetUnfolder]: 4549/14155 cut-off events. [2021-12-06 18:37:05,085 INFO L130 PetriNetUnfolder]: For 1250147/1250202 co-relation queries the response was YES. [2021-12-06 18:37:05,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160479 conditions, 14155 events. 4549/14155 cut-off events. For 1250147/1250202 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 148659 event pairs, 2257 based on Foata normal form. 3/13783 useless extension candidates. Maximal degree in co-relation 160021. Up to 4166 conditions per place. [2021-12-06 18:37:05,721 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 719 selfloop transitions, 45 changer transitions 182/1017 dead transitions. [2021-12-06 18:37:05,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 941 places, 1017 transitions, 29094 flow [2021-12-06 18:37:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:37:05,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:37:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7182 transitions. [2021-12-06 18:37:05,726 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5159482758620689 [2021-12-06 18:37:05,726 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7182 transitions. [2021-12-06 18:37:05,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7182 transitions. [2021-12-06 18:37:05,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:37:05,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7182 transitions. [2021-12-06 18:37:05,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.775) internal successors, (7182), 80 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:05,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:05,739 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:05,739 INFO L186 Difference]: Start difference. First operand has 922 places, 377 transitions, 8477 flow. Second operand 80 states and 7182 transitions. [2021-12-06 18:37:05,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 941 places, 1017 transitions, 29094 flow [2021-12-06 18:37:13,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 1017 transitions, 27878 flow, removed 547 selfloop flow, removed 68 redundant places. [2021-12-06 18:37:13,652 INFO L242 Difference]: Finished difference. Result has 944 places, 387 transitions, 8933 flow [2021-12-06 18:37:13,653 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=8147, PETRI_DIFFERENCE_MINUEND_PLACES=794, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=8933, PETRI_PLACES=944, PETRI_TRANSITIONS=387} [2021-12-06 18:37:13,653 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 787 predicate places. [2021-12-06 18:37:13,653 INFO L470 AbstractCegarLoop]: Abstraction has has 944 places, 387 transitions, 8933 flow [2021-12-06 18:37:13,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:13,653 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:37:13,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:13,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-12-06 18:37:13,653 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:37:13,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:13,656 INFO L85 PathProgramCache]: Analyzing trace with hash -214757907, now seen corresponding path program 25 times [2021-12-06 18:37:13,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:37:13,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265780177] [2021-12-06 18:37:13,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:13,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:37:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:14,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:37:14,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265780177] [2021-12-06 18:37:14,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265780177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:14,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:14,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:37:14,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731842990] [2021-12-06 18:37:14,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:14,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:37:14,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:37:14,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:37:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:37:14,085 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:37:14,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 944 places, 387 transitions, 8933 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:14,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:37:14,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:37:14,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:37:30,684 INFO L129 PetriNetUnfolder]: 4706/14452 cut-off events. [2021-12-06 18:37:30,685 INFO L130 PetriNetUnfolder]: For 1487984/1488068 co-relation queries the response was YES. [2021-12-06 18:37:31,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174232 conditions, 14452 events. 4706/14452 cut-off events. For 1487984/1488068 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 151870 event pairs, 2385 based on Foata normal form. 6/14246 useless extension candidates. Maximal degree in co-relation 173762. Up to 5266 conditions per place. [2021-12-06 18:37:31,239 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 697 selfloop transitions, 45 changer transitions 188/1001 dead transitions. [2021-12-06 18:37:31,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 963 places, 1001 transitions, 29337 flow [2021-12-06 18:37:31,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:37:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:37:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7207 transitions. [2021-12-06 18:37:31,244 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5177442528735632 [2021-12-06 18:37:31,244 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7207 transitions. [2021-12-06 18:37:31,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7207 transitions. [2021-12-06 18:37:31,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:37:31,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7207 transitions. [2021-12-06 18:37:31,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 90.0875) internal successors, (7207), 80 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:31,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:31,255 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:31,256 INFO L186 Difference]: Start difference. First operand has 944 places, 387 transitions, 8933 flow. Second operand 80 states and 7207 transitions. [2021-12-06 18:37:31,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 963 places, 1001 transitions, 29337 flow [2021-12-06 18:37:40,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 895 places, 1001 transitions, 27161 flow, removed 1032 selfloop flow, removed 68 redundant places. [2021-12-06 18:37:40,942 INFO L242 Difference]: Finished difference. Result has 966 places, 397 transitions, 9371 flow [2021-12-06 18:37:40,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=8581, PETRI_DIFFERENCE_MINUEND_PLACES=816, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=9371, PETRI_PLACES=966, PETRI_TRANSITIONS=397} [2021-12-06 18:37:40,942 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 809 predicate places. [2021-12-06 18:37:40,942 INFO L470 AbstractCegarLoop]: Abstraction has has 966 places, 397 transitions, 9371 flow [2021-12-06 18:37:40,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:40,942 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:37:40,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:40,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-12-06 18:37:40,943 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:37:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1056727703, now seen corresponding path program 26 times [2021-12-06 18:37:40,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:37:40,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155934009] [2021-12-06 18:37:40,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:40,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:37:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:41,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:37:41,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155934009] [2021-12-06 18:37:41,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155934009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:41,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:41,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:37:41,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699472991] [2021-12-06 18:37:41,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:41,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:37:41,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:37:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:37:41,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:37:41,301 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2021-12-06 18:37:41,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 966 places, 397 transitions, 9371 flow. Second operand has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:41,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:37:41,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2021-12-06 18:37:41,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:37:56,637 INFO L129 PetriNetUnfolder]: 5024/16044 cut-off events. [2021-12-06 18:37:56,637 INFO L130 PetriNetUnfolder]: For 1530224/1530322 co-relation queries the response was YES. [2021-12-06 18:37:57,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187067 conditions, 16044 events. 5024/16044 cut-off events. For 1530224/1530322 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 174509 event pairs, 2660 based on Foata normal form. 6/15654 useless extension candidates. Maximal degree in co-relation 186586. Up to 4332 conditions per place. [2021-12-06 18:37:57,423 INFO L132 encePairwiseOnDemand]: 139/174 looper letters, 662 selfloop transitions, 41 changer transitions 187/975 dead transitions. [2021-12-06 18:37:57,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 977 places, 975 transitions, 30465 flow [2021-12-06 18:37:57,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-12-06 18:37:57,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-12-06 18:37:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7322 transitions. [2021-12-06 18:37:57,428 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5844508301404853 [2021-12-06 18:37:57,428 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7322 transitions. [2021-12-06 18:37:57,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7322 transitions. [2021-12-06 18:37:57,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:37:57,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7322 transitions. [2021-12-06 18:37:57,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 101.69444444444444) internal successors, (7322), 72 states have internal predecessors, (7322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:57,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 174.0) internal successors, (12702), 73 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:57,441 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 174.0) internal successors, (12702), 73 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:37:57,442 INFO L186 Difference]: Start difference. First operand has 966 places, 397 transitions, 9371 flow. Second operand 72 states and 7322 transitions. [2021-12-06 18:37:57,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 977 places, 975 transitions, 30465 flow [2021-12-06 18:38:07,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 975 transitions, 28245 flow, removed 1072 selfloop flow, removed 68 redundant places. [2021-12-06 18:38:07,191 INFO L242 Difference]: Finished difference. Result has 976 places, 410 transitions, 9901 flow [2021-12-06 18:38:07,191 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=9017, PETRI_DIFFERENCE_MINUEND_PLACES=838, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=9901, PETRI_PLACES=976, PETRI_TRANSITIONS=410} [2021-12-06 18:38:07,191 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 819 predicate places. [2021-12-06 18:38:07,191 INFO L470 AbstractCegarLoop]: Abstraction has has 976 places, 410 transitions, 9901 flow [2021-12-06 18:38:07,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:38:07,192 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:38:07,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:38:07,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-12-06 18:38:07,192 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:38:07,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:38:07,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2009242383, now seen corresponding path program 27 times [2021-12-06 18:38:07,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:38:07,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243586120] [2021-12-06 18:38:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:38:07,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:38:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:38:07,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:38:07,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243586120] [2021-12-06 18:38:07,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243586120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:38:07,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:38:07,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:38:07,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320921826] [2021-12-06 18:38:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:38:07,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:38:07,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:38:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:38:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:38:07,688 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:38:07,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 976 places, 410 transitions, 9901 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:38:07,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:38:07,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:38:07,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:38:28,711 INFO L129 PetriNetUnfolder]: 5136/16274 cut-off events. [2021-12-06 18:38:28,711 INFO L130 PetriNetUnfolder]: For 1726168/1726261 co-relation queries the response was YES. [2021-12-06 18:38:29,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195467 conditions, 16274 events. 5136/16274 cut-off events. For 1726168/1726261 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 177151 event pairs, 2150 based on Foata normal form. 6/16036 useless extension candidates. Maximal degree in co-relation 194979. Up to 6249 conditions per place. [2021-12-06 18:38:29,547 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 759 selfloop transitions, 60 changer transitions 224/1114 dead transitions. [2021-12-06 18:38:29,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1002 places, 1114 transitions, 34007 flow [2021-12-06 18:38:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:38:29,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:38:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7157 transitions. [2021-12-06 18:38:29,552 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5141522988505747 [2021-12-06 18:38:29,552 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7157 transitions. [2021-12-06 18:38:29,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7157 transitions. [2021-12-06 18:38:29,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:38:29,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7157 transitions. [2021-12-06 18:38:29,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.4625) internal successors, (7157), 80 states have internal predecessors, (7157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:38:29,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:38:29,565 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:38:29,565 INFO L186 Difference]: Start difference. First operand has 976 places, 410 transitions, 9901 flow. Second operand 80 states and 7157 transitions. [2021-12-06 18:38:29,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1002 places, 1114 transitions, 34007 flow [2021-12-06 18:38:39,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 1114 transitions, 32067 flow, removed 939 selfloop flow, removed 57 redundant places. [2021-12-06 18:38:39,759 INFO L242 Difference]: Finished difference. Result has 1011 places, 415 transitions, 9925 flow [2021-12-06 18:38:39,759 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=9465, PETRI_DIFFERENCE_MINUEND_PLACES=866, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=9925, PETRI_PLACES=1011, PETRI_TRANSITIONS=415} [2021-12-06 18:38:39,759 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 854 predicate places. [2021-12-06 18:38:39,759 INFO L470 AbstractCegarLoop]: Abstraction has has 1011 places, 415 transitions, 9925 flow [2021-12-06 18:38:39,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:38:39,760 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:38:39,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:38:39,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-12-06 18:38:39,760 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:38:39,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:38:39,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1285010167, now seen corresponding path program 28 times [2021-12-06 18:38:39,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:38:39,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524855047] [2021-12-06 18:38:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:38:39,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:38:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:38:40,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:38:40,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524855047] [2021-12-06 18:38:40,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524855047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:38:40,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:38:40,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:38:40,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237084195] [2021-12-06 18:38:40,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:38:40,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:38:40,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:38:40,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:38:40,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:38:40,191 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:38:40,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1011 places, 415 transitions, 9925 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:38:40,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:38:40,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:38:40,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:39:01,454 INFO L129 PetriNetUnfolder]: 5318/16276 cut-off events. [2021-12-06 18:39:01,455 INFO L130 PetriNetUnfolder]: For 1628760/1628839 co-relation queries the response was YES. [2021-12-06 18:39:02,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197272 conditions, 16276 events. 5318/16276 cut-off events. For 1628760/1628839 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 173402 event pairs, 4046 based on Foata normal form. 4/15916 useless extension candidates. Maximal degree in co-relation 196771. Up to 4486 conditions per place. [2021-12-06 18:39:02,307 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 640 selfloop transitions, 46 changer transitions 157/914 dead transitions. [2021-12-06 18:39:02,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1030 places, 914 transitions, 26510 flow [2021-12-06 18:39:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:39:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:39:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7184 transitions. [2021-12-06 18:39:02,312 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5160919540229885 [2021-12-06 18:39:02,312 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7184 transitions. [2021-12-06 18:39:02,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7184 transitions. [2021-12-06 18:39:02,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:39:02,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7184 transitions. [2021-12-06 18:39:02,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.8) internal successors, (7184), 80 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:39:02,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:39:02,326 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:39:02,326 INFO L186 Difference]: Start difference. First operand has 1011 places, 415 transitions, 9925 flow. Second operand 80 states and 7184 transitions. [2021-12-06 18:39:02,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1030 places, 914 transitions, 26510 flow [2021-12-06 18:39:12,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 949 places, 914 transitions, 25278 flow, removed 438 selfloop flow, removed 81 redundant places. [2021-12-06 18:39:12,521 INFO L242 Difference]: Finished difference. Result has 1022 places, 427 transitions, 10276 flow [2021-12-06 18:39:12,521 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=9391, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=10276, PETRI_PLACES=1022, PETRI_TRANSITIONS=427} [2021-12-06 18:39:12,522 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 865 predicate places. [2021-12-06 18:39:12,522 INFO L470 AbstractCegarLoop]: Abstraction has has 1022 places, 427 transitions, 10276 flow [2021-12-06 18:39:12,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:39:12,522 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:39:12,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:39:12,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-12-06 18:39:12,522 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:39:12,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:39:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1511903205, now seen corresponding path program 29 times [2021-12-06 18:39:12,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:39:12,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830379603] [2021-12-06 18:39:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:39:12,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:39:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:39:12,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:39:12,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830379603] [2021-12-06 18:39:12,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830379603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:39:12,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:39:12,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:39:12,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957945525] [2021-12-06 18:39:12,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:39:12,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:39:12,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:39:12,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:39:12,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:39:12,907 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:39:12,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1022 places, 427 transitions, 10276 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:39:12,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:39:12,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:39:12,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:39:30,688 INFO L129 PetriNetUnfolder]: 5598/17859 cut-off events. [2021-12-06 18:39:30,689 INFO L130 PetriNetUnfolder]: For 2020279/2020398 co-relation queries the response was YES. [2021-12-06 18:39:31,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 219132 conditions, 17859 events. 5598/17859 cut-off events. For 2020279/2020398 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 198112 event pairs, 1914 based on Foata normal form. 6/17554 useless extension candidates. Maximal degree in co-relation 218620. Up to 6692 conditions per place. [2021-12-06 18:39:31,636 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 749 selfloop transitions, 69 changer transitions 189/1078 dead transitions. [2021-12-06 18:39:31,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1021 places, 1078 transitions, 31795 flow [2021-12-06 18:39:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-06 18:39:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-12-06 18:39:31,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5462 transitions. [2021-12-06 18:39:31,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5231800766283525 [2021-12-06 18:39:31,640 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5462 transitions. [2021-12-06 18:39:31,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5462 transitions. [2021-12-06 18:39:31,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:39:31,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5462 transitions. [2021-12-06 18:39:31,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 91.03333333333333) internal successors, (5462), 60 states have internal predecessors, (5462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:39:31,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:39:31,650 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:39:31,650 INFO L186 Difference]: Start difference. First operand has 1022 places, 427 transitions, 10276 flow. Second operand 60 states and 5462 transitions. [2021-12-06 18:39:31,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1021 places, 1078 transitions, 31795 flow [2021-12-06 18:39:43,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 1078 transitions, 29988 flow, removed 877 selfloop flow, removed 66 redundant places. [2021-12-06 18:39:43,641 INFO L242 Difference]: Finished difference. Result has 1005 places, 456 transitions, 11657 flow [2021-12-06 18:39:43,641 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=9907, PETRI_DIFFERENCE_MINUEND_PLACES=896, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=11657, PETRI_PLACES=1005, PETRI_TRANSITIONS=456} [2021-12-06 18:39:43,641 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 848 predicate places. [2021-12-06 18:39:43,641 INFO L470 AbstractCegarLoop]: Abstraction has has 1005 places, 456 transitions, 11657 flow [2021-12-06 18:39:43,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:39:43,642 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:39:43,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:39:43,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-12-06 18:39:43,642 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:39:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:39:43,643 INFO L85 PathProgramCache]: Analyzing trace with hash 498439383, now seen corresponding path program 30 times [2021-12-06 18:39:43,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:39:43,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421195004] [2021-12-06 18:39:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:39:43,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:39:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:39:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:39:44,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:39:44,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421195004] [2021-12-06 18:39:44,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421195004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:39:44,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:39:44,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:39:44,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313053425] [2021-12-06 18:39:44,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:39:44,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:39:44,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:39:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:39:44,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:39:44,067 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:39:44,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1005 places, 456 transitions, 11657 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:39:44,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:39:44,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:39:44,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:40:06,496 INFO L129 PetriNetUnfolder]: 5875/17601 cut-off events. [2021-12-06 18:40:06,496 INFO L130 PetriNetUnfolder]: For 1906532/1906587 co-relation queries the response was YES. [2021-12-06 18:40:07,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 220972 conditions, 17601 events. 5875/17601 cut-off events. For 1906532/1906587 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 188880 event pairs, 4736 based on Foata normal form. 4/17230 useless extension candidates. Maximal degree in co-relation 220470. Up to 5516 conditions per place. [2021-12-06 18:40:07,449 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 676 selfloop transitions, 41 changer transitions 132/920 dead transitions. [2021-12-06 18:40:07,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1048 places, 920 transitions, 28094 flow [2021-12-06 18:40:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 18:40:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-06 18:40:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7185 transitions. [2021-12-06 18:40:07,456 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5161637931034483 [2021-12-06 18:40:07,456 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7185 transitions. [2021-12-06 18:40:07,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7185 transitions. [2021-12-06 18:40:07,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:40:07,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7185 transitions. [2021-12-06 18:40:07,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.8125) internal successors, (7185), 80 states have internal predecessors, (7185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:40:07,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:40:07,470 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:40:07,470 INFO L186 Difference]: Start difference. First operand has 1005 places, 456 transitions, 11657 flow. Second operand 80 states and 7185 transitions. [2021-12-06 18:40:07,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1048 places, 920 transitions, 28094 flow [2021-12-06 18:40:19,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1003 places, 920 transitions, 26575 flow, removed 706 selfloop flow, removed 45 redundant places. [2021-12-06 18:40:19,881 INFO L242 Difference]: Finished difference. Result has 1077 places, 469 transitions, 11865 flow [2021-12-06 18:40:19,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=10864, PETRI_DIFFERENCE_MINUEND_PLACES=924, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=11865, PETRI_PLACES=1077, PETRI_TRANSITIONS=469} [2021-12-06 18:40:19,881 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 920 predicate places. [2021-12-06 18:40:19,881 INFO L470 AbstractCegarLoop]: Abstraction has has 1077 places, 469 transitions, 11865 flow [2021-12-06 18:40:19,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:40:19,882 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:40:19,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:40:19,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-12-06 18:40:19,882 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 18:40:19,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:40:19,883 INFO L85 PathProgramCache]: Analyzing trace with hash 300376613, now seen corresponding path program 31 times [2021-12-06 18:40:19,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:40:19,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919267487] [2021-12-06 18:40:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:40:19,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:40:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:40:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:40:20,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:40:20,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919267487] [2021-12-06 18:40:20,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919267487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:40:20,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:40:20,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-06 18:40:20,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220750261] [2021-12-06 18:40:20,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:40:20,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:40:20,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:40:20,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:40:20,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:40:20,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-06 18:40:20,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1077 places, 469 transitions, 11865 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:40:20,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:40:20,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-06 18:40:20,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:40:42,743 INFO L129 PetriNetUnfolder]: 6013/18553 cut-off events. [2021-12-06 18:40:42,743 INFO L130 PetriNetUnfolder]: For 2368006/2368109 co-relation queries the response was YES. [2021-12-06 18:40:43,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243223 conditions, 18553 events. 6013/18553 cut-off events. For 2368006/2368109 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 203799 event pairs, 2904 based on Foata normal form. 6/18283 useless extension candidates. Maximal degree in co-relation 242683. Up to 7225 conditions per place. [2021-12-06 18:40:43,876 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 747 selfloop transitions, 71 changer transitions 164/1053 dead transitions. [2021-12-06 18:40:43,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1076 places, 1053 transitions, 32667 flow [2021-12-06 18:40:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-06 18:40:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-12-06 18:40:43,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5463 transitions. [2021-12-06 18:40:43,880 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5232758620689655 [2021-12-06 18:40:43,880 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5463 transitions. [2021-12-06 18:40:43,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5463 transitions. [2021-12-06 18:40:43,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:40:43,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5463 transitions. [2021-12-06 18:40:43,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 91.05) internal successors, (5463), 60 states have internal predecessors, (5463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:40:43,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:40:43,889 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:40:43,889 INFO L186 Difference]: Start difference. First operand has 1077 places, 469 transitions, 11865 flow. Second operand 60 states and 5463 transitions. [2021-12-06 18:40:43,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1076 places, 1053 transitions, 32667 flow