./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro --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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:37:09,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:37:09,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:37:09,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:37:09,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:37:09,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:37:09,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:37:09,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:37:09,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:37:09,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:37:09,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:37:09,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:37:09,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:37:09,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:37:09,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:37:09,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:37:09,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:37:09,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:37:09,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:37:09,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:37:09,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:37:09,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:37:09,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:37:09,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:37:09,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:37:09,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:37:09,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:37:09,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:37:09,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:37:09,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:37:09,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:37:09,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:37:09,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:37:09,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:37:09,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:37:09,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:37:09,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:37:09,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:37:09,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:37:09,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:37:09,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:37:09,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:37:09,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:37:09,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:37:09,818 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:37:09,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:37:09,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:37:09,819 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:37:09,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:37:09,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:37:09,820 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:37:09,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:37:09,821 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:37:09,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:37:09,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:37:09,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:37:09,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:37:09,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:37:09,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:37:09,822 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:37:09,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:37:09,822 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:37:09,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:37:09,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:37:09,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:37:09,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:37:09,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:37:09,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:37:09,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:37:09,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:37:09,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:37:09,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:37:09,826 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:37:09,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:37:09,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:37:09,826 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_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-11-18 20:37:10,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:37:10,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:37:10,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:37:10,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:37:10,186 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:37:10,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-18 20:37:10,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/data/6dee894dc/63a1d074f5444965bbe23d8a973fb9f8/FLAGc6941b63f [2022-11-18 20:37:10,794 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:37:10,802 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-18 20:37:10,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/data/6dee894dc/63a1d074f5444965bbe23d8a973fb9f8/FLAGc6941b63f [2022-11-18 20:37:11,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/data/6dee894dc/63a1d074f5444965bbe23d8a973fb9f8 [2022-11-18 20:37:11,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:37:11,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:37:11,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:37:11,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:37:11,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:37:11,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b864aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11, skipping insertion in model container [2022-11-18 20:37:11,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:37:11,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:37:11,412 WARN L234 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_c870736f-c1b0-446f-af45-7da7cd039d81/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-18 20:37:11,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:37:11,426 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:37:11,454 WARN L234 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_c870736f-c1b0-446f-af45-7da7cd039d81/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-18 20:37:11,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:37:11,469 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:37:11,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11 WrapperNode [2022-11-18 20:37:11,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:37:11,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:37:11,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:37:11,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:37:11,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,536 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-11-18 20:37:11,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:37:11,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:37:11,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:37:11,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:37:11,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,595 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:37:11,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:37:11,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:37:11,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:37:11,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (1/1) ... [2022-11-18 20:37:11,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:37:11,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:11,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:37:11,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c870736f-c1b0-446f-af45-7da7cd039d81/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:37:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:37:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:37:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:37:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:37:11,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:37:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:37:11,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:37:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:37:11,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:37:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:37:11,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 20:37:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 20:37:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:37:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-18 20:37:11,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-18 20:37:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-18 20:37:11,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-18 20:37:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:37:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:37:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:37:11,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:37:11,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:37:11,701 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:37:11,823 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:37:11,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:37:12,293 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:37:12,379 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:37:12,391 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:37:12,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:12 BoogieIcfgContainer [2022-11-18 20:37:12,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:37:12,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:37:12,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:37:12,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:37:12,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:37:11" (1/3) ... [2022-11-18 20:37:12,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79590253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:37:12, skipping insertion in model container [2022-11-18 20:37:12,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:11" (2/3) ... [2022-11-18 20:37:12,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79590253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:37:12, skipping insertion in model container [2022-11-18 20:37:12,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:12" (3/3) ... [2022-11-18 20:37:12,407 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-11-18 20:37:12,418 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:37:12,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:37:12,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:37:12,429 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:37:12,676 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-18 20:37:12,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 235 transitions, 542 flow [2022-11-18 20:37:12,845 INFO L130 PetriNetUnfolder]: 8/207 cut-off events. [2022-11-18 20:37:12,845 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:37:12,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 207 events. 8/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-11-18 20:37:12,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 235 transitions, 542 flow [2022-11-18 20:37:12,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 198 transitions, 444 flow [2022-11-18 20:37:12,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:37:12,876 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@44b04b4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:37:12,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-18 20:37:12,944 INFO L130 PetriNetUnfolder]: 8/197 cut-off events. [2022-11-18 20:37:12,944 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:37:12,945 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:12,945 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:12,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:37:12,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2113144844, now seen corresponding path program 1 times [2022-11-18 20:37:12,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:12,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123868437] [2022-11-18 20:37:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:14,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:14,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123868437] [2022-11-18 20:37:14,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123868437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:14,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:14,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:37:14,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187215559] [2022-11-18 20:37:14,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:14,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:37:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:14,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:37:14,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:37:14,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-18 20:37:14,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 198 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:14,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:14,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-18 20:37:14,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:14,903 INFO L130 PetriNetUnfolder]: 300/1160 cut-off events. [2022-11-18 20:37:14,903 INFO L131 PetriNetUnfolder]: For 372/372 co-relation queries the response was YES. [2022-11-18 20:37:14,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 1160 events. 300/1160 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6494 event pairs, 155 based on Foata normal form. 50/1092 useless extension candidates. Maximal degree in co-relation 1761. Up to 289 conditions per place. [2022-11-18 20:37:14,926 INFO L137 encePairwiseOnDemand]: 228/239 looper letters, 48 selfloop transitions, 6 changer transitions 3/221 dead transitions. [2022-11-18 20:37:14,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 221 transitions, 663 flow [2022-11-18 20:37:14,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:37:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:37:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1053 transitions. [2022-11-18 20:37:14,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8811715481171548 [2022-11-18 20:37:14,954 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1053 transitions. [2022-11-18 20:37:14,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1053 transitions. [2022-11-18 20:37:14,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:14,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1053 transitions. [2022-11-18 20:37:14,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.6) internal successors, (1053), 5 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:14,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:14,980 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:14,982 INFO L175 Difference]: Start difference. First operand has 209 places, 198 transitions, 444 flow. Second operand 5 states and 1053 transitions. [2022-11-18 20:37:14,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 221 transitions, 663 flow [2022-11-18 20:37:14,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 221 transitions, 589 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-18 20:37:14,998 INFO L231 Difference]: Finished difference. Result has 202 places, 191 transitions, 416 flow [2022-11-18 20:37:15,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=202, PETRI_TRANSITIONS=191} [2022-11-18 20:37:15,005 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2022-11-18 20:37:15,006 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 191 transitions, 416 flow [2022-11-18 20:37:15,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:15,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:15,007 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:15,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:37:15,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:37:15,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash -310643362, now seen corresponding path program 2 times [2022-11-18 20:37:15,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:15,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199350272] [2022-11-18 20:37:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:15,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:15,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:15,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199350272] [2022-11-18 20:37:15,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199350272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:15,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:15,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:37:15,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276818979] [2022-11-18 20:37:15,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:15,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:37:15,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:37:15,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:37:15,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-18 20:37:15,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 191 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:15,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:15,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-18 20:37:15,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:16,093 INFO L130 PetriNetUnfolder]: 264/1094 cut-off events. [2022-11-18 20:37:16,093 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-11-18 20:37:16,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 1094 events. 264/1094 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6033 event pairs, 107 based on Foata normal form. 20/1002 useless extension candidates. Maximal degree in co-relation 1236. Up to 258 conditions per place. [2022-11-18 20:37:16,103 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 48 selfloop transitions, 6 changer transitions 1/218 dead transitions. [2022-11-18 20:37:16,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 607 flow [2022-11-18 20:37:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:37:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:37:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-11-18 20:37:16,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-11-18 20:37:16,107 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-11-18 20:37:16,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-11-18 20:37:16,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:16,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-11-18 20:37:16,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:16,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:16,115 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:16,115 INFO L175 Difference]: Start difference. First operand has 202 places, 191 transitions, 416 flow. Second operand 5 states and 1046 transitions. [2022-11-18 20:37:16,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 607 flow [2022-11-18 20:37:16,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 595 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:37:16,123 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 420 flow [2022-11-18 20:37:16,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-11-18 20:37:16,124 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-11-18 20:37:16,125 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 420 flow [2022-11-18 20:37:16,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:16,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:16,126 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:16,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:37:16,127 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:37:16,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:16,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1575453765, now seen corresponding path program 1 times [2022-11-18 20:37:16,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:16,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455940840] [2022-11-18 20:37:16,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:16,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:16,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:16,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455940840] [2022-11-18 20:37:16,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455940840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:16,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:16,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:37:16,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702930063] [2022-11-18 20:37:16,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:16,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:37:16,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:37:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:37:16,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-18 20:37:16,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:16,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:16,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-18 20:37:16,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:16,989 INFO L130 PetriNetUnfolder]: 274/1085 cut-off events. [2022-11-18 20:37:16,989 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2022-11-18 20:37:16,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 1085 events. 274/1085 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6109 event pairs, 120 based on Foata normal form. 10/1011 useless extension candidates. Maximal degree in co-relation 1269. Up to 292 conditions per place. [2022-11-18 20:37:16,998 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 49 selfloop transitions, 6 changer transitions 0/218 dead transitions. [2022-11-18 20:37:16,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 614 flow [2022-11-18 20:37:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:37:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:37:17,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-11-18 20:37:17,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-11-18 20:37:17,002 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-11-18 20:37:17,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-11-18 20:37:17,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:17,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-11-18 20:37:17,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:17,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:17,010 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:17,010 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 420 flow. Second operand 5 states and 1046 transitions. [2022-11-18 20:37:17,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 614 flow [2022-11-18 20:37:17,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 602 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:37:17,016 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 426 flow [2022-11-18 20:37:17,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-11-18 20:37:17,017 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-11-18 20:37:17,018 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 426 flow [2022-11-18 20:37:17,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:17,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:17,019 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:17,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:37:17,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:37:17,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash -106266993, now seen corresponding path program 2 times [2022-11-18 20:37:17,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:17,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135412646] [2022-11-18 20:37:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:17,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:19,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:19,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135412646] [2022-11-18 20:37:19,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135412646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:19,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:19,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-18 20:37:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005758256] [2022-11-18 20:37:19,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:19,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:37:19,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:37:19,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:37:19,614 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-11-18 20:37:19,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 426 flow. Second operand has 29 states, 29 states have (on average 157.17241379310346) internal successors, (4558), 29 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:19,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:19,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-11-18 20:37:19,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:26,831 INFO L130 PetriNetUnfolder]: 5453/10826 cut-off events. [2022-11-18 20:37:26,831 INFO L131 PetriNetUnfolder]: For 1996/1996 co-relation queries the response was YES. [2022-11-18 20:37:26,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20522 conditions, 10826 events. 5453/10826 cut-off events. For 1996/1996 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 80538 event pairs, 775 based on Foata normal form. 1/10227 useless extension candidates. Maximal degree in co-relation 19491. Up to 3881 conditions per place. [2022-11-18 20:37:26,952 INFO L137 encePairwiseOnDemand]: 210/239 looper letters, 315 selfloop transitions, 129 changer transitions 23/590 dead transitions. [2022-11-18 20:37:26,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 590 transitions, 2423 flow [2022-11-18 20:37:26,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 20:37:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-18 20:37:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 7753 transitions. [2022-11-18 20:37:26,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6901985222113416 [2022-11-18 20:37:26,991 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 7753 transitions. [2022-11-18 20:37:26,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 7753 transitions. [2022-11-18 20:37:26,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:26,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 7753 transitions. [2022-11-18 20:37:27,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 164.95744680851064) internal successors, (7753), 47 states have internal predecessors, (7753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:27,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 239.0) internal successors, (11472), 48 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:27,059 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 239.0) internal successors, (11472), 48 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:27,060 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 426 flow. Second operand 47 states and 7753 transitions. [2022-11-18 20:37:27,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 590 transitions, 2423 flow [2022-11-18 20:37:27,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 590 transitions, 2343 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:37:27,081 INFO L231 Difference]: Finished difference. Result has 273 places, 323 transitions, 1175 flow [2022-11-18 20:37:27,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1175, PETRI_PLACES=273, PETRI_TRANSITIONS=323} [2022-11-18 20:37:27,084 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 64 predicate places. [2022-11-18 20:37:27,084 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 323 transitions, 1175 flow [2022-11-18 20:37:27,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 157.17241379310346) internal successors, (4558), 29 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:27,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:27,088 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:27,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:37:27,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:37:27,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:27,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1459608115, now seen corresponding path program 3 times [2022-11-18 20:37:27,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:27,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387029550] [2022-11-18 20:37:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:27,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:28,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:28,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387029550] [2022-11-18 20:37:28,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387029550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:28,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:28,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:37:28,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128990972] [2022-11-18 20:37:28,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:28,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:37:28,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:28,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:37:28,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:37:28,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-18 20:37:28,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 323 transitions, 1175 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:28,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:28,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-18 20:37:28,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:37,175 INFO L130 PetriNetUnfolder]: 6889/13044 cut-off events. [2022-11-18 20:37:37,176 INFO L131 PetriNetUnfolder]: For 16008/16010 co-relation queries the response was YES. [2022-11-18 20:37:37,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35850 conditions, 13044 events. 6889/13044 cut-off events. For 16008/16010 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 98452 event pairs, 1526 based on Foata normal form. 1/12165 useless extension candidates. Maximal degree in co-relation 35798. Up to 5192 conditions per place. [2022-11-18 20:37:37,388 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 408 selfloop transitions, 174 changer transitions 20/737 dead transitions. [2022-11-18 20:37:37,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 737 transitions, 4176 flow [2022-11-18 20:37:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-18 20:37:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-18 20:37:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8935 transitions. [2022-11-18 20:37:37,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.718941100740264 [2022-11-18 20:37:37,410 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8935 transitions. [2022-11-18 20:37:37,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8935 transitions. [2022-11-18 20:37:37,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:37,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8935 transitions. [2022-11-18 20:37:37,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 171.82692307692307) internal successors, (8935), 52 states have internal predecessors, (8935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:37,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:37,496 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:37,496 INFO L175 Difference]: Start difference. First operand has 273 places, 323 transitions, 1175 flow. Second operand 52 states and 8935 transitions. [2022-11-18 20:37:37,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 737 transitions, 4176 flow [2022-11-18 20:37:37,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 737 transitions, 4150 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:37:37,628 INFO L231 Difference]: Finished difference. Result has 341 places, 475 transitions, 2584 flow [2022-11-18 20:37:37,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2584, PETRI_PLACES=341, PETRI_TRANSITIONS=475} [2022-11-18 20:37:37,632 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 132 predicate places. [2022-11-18 20:37:37,632 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 475 transitions, 2584 flow [2022-11-18 20:37:37,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:37,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:37,634 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:37,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:37:37,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:37:37,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:37,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1613649291, now seen corresponding path program 4 times [2022-11-18 20:37:37,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:37,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261383638] [2022-11-18 20:37:37,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:37,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:38,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:38,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261383638] [2022-11-18 20:37:38,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261383638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:38,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:38,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:37:38,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617195483] [2022-11-18 20:37:38,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:38,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:37:38,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:38,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:37:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:37:38,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-11-18 20:37:38,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 475 transitions, 2584 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:38,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:38,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-11-18 20:37:38,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:40,321 INFO L130 PetriNetUnfolder]: 2285/6409 cut-off events. [2022-11-18 20:37:40,321 INFO L131 PetriNetUnfolder]: For 13936/14274 co-relation queries the response was YES. [2022-11-18 20:37:40,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17301 conditions, 6409 events. 2285/6409 cut-off events. For 13936/14274 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 55652 event pairs, 824 based on Foata normal form. 111/5871 useless extension candidates. Maximal degree in co-relation 17228. Up to 1712 conditions per place. [2022-11-18 20:37:40,459 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 49 selfloop transitions, 9 changer transitions 0/502 dead transitions. [2022-11-18 20:37:40,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 502 transitions, 2784 flow [2022-11-18 20:37:40,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:37:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:37:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-11-18 20:37:40,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-11-18 20:37:40,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-11-18 20:37:40,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-11-18 20:37:40,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:40,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-11-18 20:37:40,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:40,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:40,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:40,470 INFO L175 Difference]: Start difference. First operand has 341 places, 475 transitions, 2584 flow. Second operand 5 states and 1046 transitions. [2022-11-18 20:37:40,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 502 transitions, 2784 flow [2022-11-18 20:37:40,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 502 transitions, 2448 flow, removed 156 selfloop flow, removed 7 redundant places. [2022-11-18 20:37:40,695 INFO L231 Difference]: Finished difference. Result has 335 places, 474 transitions, 2267 flow [2022-11-18 20:37:40,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2267, PETRI_PLACES=335, PETRI_TRANSITIONS=474} [2022-11-18 20:37:40,700 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 126 predicate places. [2022-11-18 20:37:40,700 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 474 transitions, 2267 flow [2022-11-18 20:37:40,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:40,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:40,701 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:40,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:37:40,702 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:37:40,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:40,702 INFO L85 PathProgramCache]: Analyzing trace with hash -484304023, now seen corresponding path program 1 times [2022-11-18 20:37:40,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:40,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230714202] [2022-11-18 20:37:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:40,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:42,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:42,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230714202] [2022-11-18 20:37:42,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230714202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:42,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:42,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-18 20:37:42,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747386083] [2022-11-18 20:37:42,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:42,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:37:42,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:42,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:37:42,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:37:42,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-11-18 20:37:42,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 474 transitions, 2267 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:42,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:42,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-11-18 20:37:42,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:51,711 INFO L130 PetriNetUnfolder]: 7788/14899 cut-off events. [2022-11-18 20:37:51,712 INFO L131 PetriNetUnfolder]: For 37941/37941 co-relation queries the response was YES. [2022-11-18 20:37:51,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48404 conditions, 14899 events. 7788/14899 cut-off events. For 37941/37941 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 114770 event pairs, 2012 based on Foata normal form. 1/13841 useless extension candidates. Maximal degree in co-relation 47244. Up to 6943 conditions per place. [2022-11-18 20:37:52,035 INFO L137 encePairwiseOnDemand]: 210/239 looper letters, 486 selfloop transitions, 227 changer transitions 23/859 dead transitions. [2022-11-18 20:37:52,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 859 transitions, 6104 flow [2022-11-18 20:37:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:37:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-18 20:37:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 7877 transitions. [2022-11-18 20:37:52,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6866283124128313 [2022-11-18 20:37:52,052 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 7877 transitions. [2022-11-18 20:37:52,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 7877 transitions. [2022-11-18 20:37:52,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:52,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 7877 transitions. [2022-11-18 20:37:52,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 164.10416666666666) internal successors, (7877), 48 states have internal predecessors, (7877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:52,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 239.0) internal successors, (11711), 49 states have internal predecessors, (11711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:52,102 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 239.0) internal successors, (11711), 49 states have internal predecessors, (11711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:52,102 INFO L175 Difference]: Start difference. First operand has 335 places, 474 transitions, 2267 flow. Second operand 48 states and 7877 transitions. [2022-11-18 20:37:52,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 859 transitions, 6104 flow [2022-11-18 20:37:52,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 859 transitions, 6064 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:37:52,366 INFO L231 Difference]: Finished difference. Result has 404 places, 623 transitions, 4097 flow [2022-11-18 20:37:52,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=4097, PETRI_PLACES=404, PETRI_TRANSITIONS=623} [2022-11-18 20:37:52,368 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 195 predicate places. [2022-11-18 20:37:52,368 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 623 transitions, 4097 flow [2022-11-18 20:37:52,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:52,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:52,370 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:52,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:37:52,371 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:37:52,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:52,371 INFO L85 PathProgramCache]: Analyzing trace with hash 502588187, now seen corresponding path program 2 times [2022-11-18 20:37:52,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:52,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735757095] [2022-11-18 20:37:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:52,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:53,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:53,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735757095] [2022-11-18 20:37:53,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735757095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:53,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:53,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:37:53,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991553978] [2022-11-18 20:37:53,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:53,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:37:53,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:53,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:37:53,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:37:53,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-18 20:37:53,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 623 transitions, 4097 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:53,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:37:53,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-18 20:37:53,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:01,906 INFO L130 PetriNetUnfolder]: 7871/15243 cut-off events. [2022-11-18 20:38:01,906 INFO L131 PetriNetUnfolder]: For 63340/63374 co-relation queries the response was YES. [2022-11-18 20:38:02,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55221 conditions, 15243 events. 7871/15243 cut-off events. For 63340/63374 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 120986 event pairs, 1788 based on Foata normal form. 6/14103 useless extension candidates. Maximal degree in co-relation 55112. Up to 7103 conditions per place. [2022-11-18 20:38:02,442 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 583 selfloop transitions, 289 changer transitions 20/1031 dead transitions. [2022-11-18 20:38:02,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1031 transitions, 8786 flow [2022-11-18 20:38:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 20:38:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-18 20:38:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 8599 transitions. [2022-11-18 20:38:02,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.719581589958159 [2022-11-18 20:38:02,464 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 8599 transitions. [2022-11-18 20:38:02,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 8599 transitions. [2022-11-18 20:38:02,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:02,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 8599 transitions. [2022-11-18 20:38:02,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 171.98) internal successors, (8599), 50 states have internal predecessors, (8599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:02,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:02,520 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:02,521 INFO L175 Difference]: Start difference. First operand has 404 places, 623 transitions, 4097 flow. Second operand 50 states and 8599 transitions. [2022-11-18 20:38:02,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1031 transitions, 8786 flow [2022-11-18 20:38:03,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 1031 transitions, 8232 flow, removed 275 selfloop flow, removed 5 redundant places. [2022-11-18 20:38:03,160 INFO L231 Difference]: Finished difference. Result has 462 places, 766 transitions, 5844 flow [2022-11-18 20:38:03,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=5844, PETRI_PLACES=462, PETRI_TRANSITIONS=766} [2022-11-18 20:38:03,162 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 253 predicate places. [2022-11-18 20:38:03,163 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 766 transitions, 5844 flow [2022-11-18 20:38:03,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:03,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:03,164 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:03,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:38:03,165 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:38:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1898893893, now seen corresponding path program 3 times [2022-11-18 20:38:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:03,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446779088] [2022-11-18 20:38:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:03,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:04,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:04,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446779088] [2022-11-18 20:38:04,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446779088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:04,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:04,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:38:04,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541780648] [2022-11-18 20:38:04,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:04,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:38:04,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:38:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:38:04,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-18 20:38:04,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 766 transitions, 5844 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:04,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:04,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-18 20:38:04,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:12,988 INFO L130 PetriNetUnfolder]: 8380/16466 cut-off events. [2022-11-18 20:38:12,988 INFO L131 PetriNetUnfolder]: For 90838/90876 co-relation queries the response was YES. [2022-11-18 20:38:13,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62774 conditions, 16466 events. 8380/16466 cut-off events. For 90838/90876 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 134680 event pairs, 1704 based on Foata normal form. 10/15174 useless extension candidates. Maximal degree in co-relation 62644. Up to 7450 conditions per place. [2022-11-18 20:38:13,444 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 524 selfloop transitions, 328 changer transitions 15/1006 dead transitions. [2022-11-18 20:38:13,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1006 transitions, 9290 flow [2022-11-18 20:38:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:38:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:38:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5209 transitions. [2022-11-18 20:38:13,456 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7264993026499302 [2022-11-18 20:38:13,457 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5209 transitions. [2022-11-18 20:38:13,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5209 transitions. [2022-11-18 20:38:13,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:13,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5209 transitions. [2022-11-18 20:38:13,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 173.63333333333333) internal successors, (5209), 30 states have internal predecessors, (5209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:13,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 239.0) internal successors, (7409), 31 states have internal predecessors, (7409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:13,494 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 239.0) internal successors, (7409), 31 states have internal predecessors, (7409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:13,495 INFO L175 Difference]: Start difference. First operand has 462 places, 766 transitions, 5844 flow. Second operand 30 states and 5209 transitions. [2022-11-18 20:38:13,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1006 transitions, 9290 flow [2022-11-18 20:38:14,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 1006 transitions, 8713 flow, removed 270 selfloop flow, removed 6 redundant places. [2022-11-18 20:38:14,131 INFO L231 Difference]: Finished difference. Result has 492 places, 819 transitions, 6656 flow [2022-11-18 20:38:14,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=5278, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6656, PETRI_PLACES=492, PETRI_TRANSITIONS=819} [2022-11-18 20:38:14,132 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 283 predicate places. [2022-11-18 20:38:14,132 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 819 transitions, 6656 flow [2022-11-18 20:38:14,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:14,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:14,134 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:14,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:38:14,134 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:38:14,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:14,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1617534097, now seen corresponding path program 4 times [2022-11-18 20:38:14,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:14,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925863783] [2022-11-18 20:38:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:14,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:15,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:15,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925863783] [2022-11-18 20:38:15,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925863783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:15,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:15,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:38:15,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325125695] [2022-11-18 20:38:15,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:15,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:38:15,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:38:15,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:38:15,791 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-18 20:38:15,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 819 transitions, 6656 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:15,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:15,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-18 20:38:15,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:24,277 INFO L130 PetriNetUnfolder]: 9103/17734 cut-off events. [2022-11-18 20:38:24,278 INFO L131 PetriNetUnfolder]: For 121729/121759 co-relation queries the response was YES. [2022-11-18 20:38:24,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71445 conditions, 17734 events. 9103/17734 cut-off events. For 121729/121759 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 145114 event pairs, 2620 based on Foata normal form. 7/16226 useless extension candidates. Maximal degree in co-relation 71297. Up to 7778 conditions per place. [2022-11-18 20:38:24,672 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 689 selfloop transitions, 410 changer transitions 20/1258 dead transitions. [2022-11-18 20:38:24,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 1258 transitions, 13170 flow [2022-11-18 20:38:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 20:38:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-18 20:38:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 8534 transitions. [2022-11-18 20:38:24,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7141422594142259 [2022-11-18 20:38:24,682 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 8534 transitions. [2022-11-18 20:38:24,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 8534 transitions. [2022-11-18 20:38:24,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:24,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 8534 transitions. [2022-11-18 20:38:24,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 170.68) internal successors, (8534), 50 states have internal predecessors, (8534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:24,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:24,717 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 239.0) internal successors, (12189), 51 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:24,717 INFO L175 Difference]: Start difference. First operand has 492 places, 819 transitions, 6656 flow. Second operand 50 states and 8534 transitions. [2022-11-18 20:38:24,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 1258 transitions, 13170 flow [2022-11-18 20:38:25,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1258 transitions, 12537 flow, removed 180 selfloop flow, removed 10 redundant places. [2022-11-18 20:38:25,587 INFO L231 Difference]: Finished difference. Result has 546 places, 1041 transitions, 10059 flow [2022-11-18 20:38:25,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=6219, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=10059, PETRI_PLACES=546, PETRI_TRANSITIONS=1041} [2022-11-18 20:38:25,588 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 337 predicate places. [2022-11-18 20:38:25,588 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 1041 transitions, 10059 flow [2022-11-18 20:38:25,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:25,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:25,590 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:25,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:38:25,590 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:38:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:25,591 INFO L85 PathProgramCache]: Analyzing trace with hash 441768683, now seen corresponding path program 5 times [2022-11-18 20:38:25,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:25,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743421710] [2022-11-18 20:38:25,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:25,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:27,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:27,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743421710] [2022-11-18 20:38:27,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743421710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:27,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:27,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:38:27,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664120995] [2022-11-18 20:38:27,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:27,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:38:27,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:27,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:38:27,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:38:27,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-11-18 20:38:27,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 1041 transitions, 10059 flow. Second operand has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:27,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:27,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-11-18 20:38:27,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:36,182 INFO L130 PetriNetUnfolder]: 9686/19003 cut-off events. [2022-11-18 20:38:36,182 INFO L131 PetriNetUnfolder]: For 142614/142665 co-relation queries the response was YES. [2022-11-18 20:38:36,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79583 conditions, 19003 events. 9686/19003 cut-off events. For 142614/142665 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 159351 event pairs, 2054 based on Foata normal form. 11/17361 useless extension candidates. Maximal degree in co-relation 79414. Up to 8562 conditions per place. [2022-11-18 20:38:36,646 INFO L137 encePairwiseOnDemand]: 216/239 looper letters, 655 selfloop transitions, 543 changer transitions 15/1352 dead transitions. [2022-11-18 20:38:36,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 1352 transitions, 14823 flow [2022-11-18 20:38:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:38:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-18 20:38:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 7086 transitions. [2022-11-18 20:38:36,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.723135013776916 [2022-11-18 20:38:36,654 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 7086 transitions. [2022-11-18 20:38:36,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 7086 transitions. [2022-11-18 20:38:36,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:36,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 7086 transitions. [2022-11-18 20:38:36,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 172.82926829268294) internal successors, (7086), 41 states have internal predecessors, (7086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:36,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 239.0) internal successors, (10038), 42 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:36,677 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 239.0) internal successors, (10038), 42 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:36,677 INFO L175 Difference]: Start difference. First operand has 546 places, 1041 transitions, 10059 flow. Second operand 41 states and 7086 transitions. [2022-11-18 20:38:36,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 1352 transitions, 14823 flow [2022-11-18 20:38:37,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 1352 transitions, 14253 flow, removed 283 selfloop flow, removed 5 redundant places. [2022-11-18 20:38:37,818 INFO L231 Difference]: Finished difference. Result has 586 places, 1112 transitions, 11753 flow [2022-11-18 20:38:37,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=9515, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=479, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=11753, PETRI_PLACES=586, PETRI_TRANSITIONS=1112} [2022-11-18 20:38:37,820 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 377 predicate places. [2022-11-18 20:38:37,820 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 1112 transitions, 11753 flow [2022-11-18 20:38:37,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.375) internal successors, (3969), 24 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:37,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:37,821 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:37,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:38:37,821 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:38:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:37,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1445000917, now seen corresponding path program 6 times [2022-11-18 20:38:37,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:37,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840929933] [2022-11-18 20:38:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:37,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:39,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:39,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840929933] [2022-11-18 20:38:39,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840929933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:39,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:39,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-18 20:38:39,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783811889] [2022-11-18 20:38:39,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:39,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:38:39,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:39,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:38:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:38:39,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-11-18 20:38:39,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 1112 transitions, 11753 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:39,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:39,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-11-18 20:38:39,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:56,330 INFO L130 PetriNetUnfolder]: 12146/23352 cut-off events. [2022-11-18 20:38:56,331 INFO L131 PetriNetUnfolder]: For 205527/205527 co-relation queries the response was YES. [2022-11-18 20:38:56,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106087 conditions, 23352 events. 12146/23352 cut-off events. For 205527/205527 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 196568 event pairs, 2698 based on Foata normal form. 1/21371 useless extension candidates. Maximal degree in co-relation 105906. Up to 9698 conditions per place. [2022-11-18 20:38:57,450 INFO L137 encePairwiseOnDemand]: 210/239 looper letters, 1018 selfloop transitions, 682 changer transitions 15/1838 dead transitions. [2022-11-18 20:38:57,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 1838 transitions, 23455 flow [2022-11-18 20:38:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 20:38:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-18 20:38:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 10167 transitions. [2022-11-18 20:38:57,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6861249831286274 [2022-11-18 20:38:57,471 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 10167 transitions. [2022-11-18 20:38:57,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 10167 transitions. [2022-11-18 20:38:57,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:38:57,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 10167 transitions. [2022-11-18 20:38:57,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 163.98387096774192) internal successors, (10167), 62 states have internal predecessors, (10167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:57,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 239.0) internal successors, (15057), 63 states have internal predecessors, (15057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:57,528 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 239.0) internal successors, (15057), 63 states have internal predecessors, (15057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:57,529 INFO L175 Difference]: Start difference. First operand has 586 places, 1112 transitions, 11753 flow. Second operand 62 states and 10167 transitions. [2022-11-18 20:38:57,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 1838 transitions, 23455 flow [2022-11-18 20:38:59,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 1838 transitions, 22076 flow, removed 258 selfloop flow, removed 16 redundant places. [2022-11-18 20:38:59,300 INFO L231 Difference]: Finished difference. Result has 655 places, 1524 transitions, 19265 flow [2022-11-18 20:38:59,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=10737, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=19265, PETRI_PLACES=655, PETRI_TRANSITIONS=1524} [2022-11-18 20:38:59,302 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 446 predicate places. [2022-11-18 20:38:59,302 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 1524 transitions, 19265 flow [2022-11-18 20:38:59,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:59,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:38:59,303 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:59,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:38:59,303 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-18 20:38:59,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:59,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1142946435, now seen corresponding path program 7 times [2022-11-18 20:38:59,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:59,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943749774] [2022-11-18 20:38:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:59,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat