./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/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_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 --- 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 21:03:09,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:03:09,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:03:09,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:03:09,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:03:09,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:03:09,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:03:09,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:03:09,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:03:09,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:03:09,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:03:09,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:03:09,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:03:09,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:03:09,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:03:09,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:03:09,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:03:09,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:03:09,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:03:09,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:03:09,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:03:09,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:03:09,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:03:09,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:03:09,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:03:09,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:03:09,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:03:09,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:03:09,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:03:09,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:03:09,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:03:09,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:03:09,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:03:09,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:03:09,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:03:09,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:03:09,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:03:09,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:03:09,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:03:09,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:03:09,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:03:09,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:03:09,713 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:03:09,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:03:09,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:03:09,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:03:09,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:03:09,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:03:09,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:03:09,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:03:09,717 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:03:09,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:03:09,718 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:03:09,718 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:03:09,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:03:09,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:03:09,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:03:09,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:03:09,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:03:09,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:03:09,720 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:03:09,720 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:03:09,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:03:09,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:03:09,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:03:09,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:03:09,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:03:09,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:03:09,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:03:09,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:03:09,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:03:09,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:03:09,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:03:09,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:03:09,724 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:03:09,724 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:03:09,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:03:09,725 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_109a29e8-11c5-40e6-94b2-94bb45edddab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 [2022-11-18 21:03:10,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:03:10,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:03:10,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:03:10,108 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:03:10,109 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:03:10,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2022-11-18 21:03:10,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/data/8874d6a83/94ee2806d2e44156b38997e3c083e2d9/FLAG4f3691a75 [2022-11-18 21:03:10,707 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:03:10,708 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2022-11-18 21:03:10,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/data/8874d6a83/94ee2806d2e44156b38997e3c083e2d9/FLAG4f3691a75 [2022-11-18 21:03:11,080 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/data/8874d6a83/94ee2806d2e44156b38997e3c083e2d9 [2022-11-18 21:03:11,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:03:11,088 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:03:11,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:03:11,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:03:11,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:03:11,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569dd5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11, skipping insertion in model container [2022-11-18 21:03:11,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:03:11,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:03:11,375 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_109a29e8-11c5-40e6-94b2-94bb45edddab/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2022-11-18 21:03:11,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:03:11,394 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:03:11,441 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_109a29e8-11c5-40e6-94b2-94bb45edddab/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2022-11-18 21:03:11,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:03:11,465 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:03:11,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11 WrapperNode [2022-11-18 21:03:11,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:03:11,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:03:11,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:03:11,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:03:11,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,531 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2022-11-18 21:03:11,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:03:11,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:03:11,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:03:11,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:03:11,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,571 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:03:11,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:03:11,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:03:11,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:03:11,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (1/1) ... [2022-11-18 21:03:11,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:03:11,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:11,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:03:11,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:03:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:03:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:03:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:03:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:03:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:03:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:03:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:03:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 21:03:11,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 21:03:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:03:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:03:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:03:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 21:03:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 21:03:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:03:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:03:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:03:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:03:11,670 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 21:03:11,804 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:03:11,806 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:03:12,251 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:03:12,397 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:03:12,397 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 21:03:12,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:03:12 BoogieIcfgContainer [2022-11-18 21:03:12,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:03:12,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:03:12,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:03:12,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:03:12,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:03:11" (1/3) ... [2022-11-18 21:03:12,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eaf1c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:03:12, skipping insertion in model container [2022-11-18 21:03:12,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:11" (2/3) ... [2022-11-18 21:03:12,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eaf1c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:03:12, skipping insertion in model container [2022-11-18 21:03:12,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:03:12" (3/3) ... [2022-11-18 21:03:12,413 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2022-11-18 21:03:12,424 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:03:12,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:03:12,439 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 21:03:12,439 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:03:12,611 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 21:03:12,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 147 transitions, 326 flow [2022-11-18 21:03:12,789 INFO L130 PetriNetUnfolder]: 9/143 cut-off events. [2022-11-18 21:03:12,790 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 21:03:12,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 143 events. 9/143 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2022-11-18 21:03:12,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 147 transitions, 326 flow [2022-11-18 21:03:12,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 120 transitions, 261 flow [2022-11-18 21:03:12,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:03:12,834 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;@21e8c77e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:03:12,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-18 21:03:12,845 INFO L130 PetriNetUnfolder]: 1/33 cut-off events. [2022-11-18 21:03:12,846 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:03:12,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:12,847 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] [2022-11-18 21:03:12,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:12,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:12,855 INFO L85 PathProgramCache]: Analyzing trace with hash 903411107, now seen corresponding path program 1 times [2022-11-18 21:03:12,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:12,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952407109] [2022-11-18 21:03:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:12,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:13,411 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 21:03:13,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:13,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952407109] [2022-11-18 21:03:13,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952407109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:13,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:13,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:03:13,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745464417] [2022-11-18 21:03:13,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:13,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:03:13,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:03:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:03:13,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-11-18 21:03:13,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 21:03:13,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:13,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-11-18 21:03:13,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:14,217 INFO L130 PetriNetUnfolder]: 832/2244 cut-off events. [2022-11-18 21:03:14,218 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-11-18 21:03:14,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3530 conditions, 2244 events. 832/2244 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17202 event pairs, 418 based on Foata normal form. 405/1736 useless extension candidates. Maximal degree in co-relation 2311. Up to 936 conditions per place. [2022-11-18 21:03:14,264 INFO L137 encePairwiseOnDemand]: 135/147 looper letters, 28 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2022-11-18 21:03:14,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 126 transitions, 351 flow [2022-11-18 21:03:14,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:03:14,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:03:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2022-11-18 21:03:14,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9138321995464853 [2022-11-18 21:03:14,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2022-11-18 21:03:14,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2022-11-18 21:03:14,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:14,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2022-11-18 21:03:14,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 21:03:14,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 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 21:03:14,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 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 21:03:14,334 INFO L175 Difference]: Start difference. First operand has 125 places, 120 transitions, 261 flow. Second operand 3 states and 403 transitions. [2022-11-18 21:03:14,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 126 transitions, 351 flow [2022-11-18 21:03:14,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 126 transitions, 327 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 21:03:14,350 INFO L231 Difference]: Finished difference. Result has 119 places, 115 transitions, 254 flow [2022-11-18 21:03:14,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2022-11-18 21:03:14,360 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, -6 predicate places. [2022-11-18 21:03:14,360 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 115 transitions, 254 flow [2022-11-18 21:03:14,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 21:03:14,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:14,362 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] [2022-11-18 21:03:14,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:03:14,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:14,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:14,365 INFO L85 PathProgramCache]: Analyzing trace with hash 594695334, now seen corresponding path program 1 times [2022-11-18 21:03:14,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:14,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464480062] [2022-11-18 21:03:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:14,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:14,581 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 21:03:14,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:14,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464480062] [2022-11-18 21:03:14,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464480062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:14,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:14,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:03:14,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925557092] [2022-11-18 21:03:14,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:14,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:03:14,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:14,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:03:14,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:14,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-11-18 21:03:14,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 0 states have call successors, (0), 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 21:03:14,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:14,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-11-18 21:03:14,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:16,215 INFO L130 PetriNetUnfolder]: 3354/6986 cut-off events. [2022-11-18 21:03:16,216 INFO L131 PetriNetUnfolder]: For 743/753 co-relation queries the response was YES. [2022-11-18 21:03:16,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13246 conditions, 6986 events. 3354/6986 cut-off events. For 743/753 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 56909 event pairs, 1104 based on Foata normal form. 1/4103 useless extension candidates. Maximal degree in co-relation 9416. Up to 3019 conditions per place. [2022-11-18 21:03:16,345 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 64 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2022-11-18 21:03:16,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 155 transitions, 497 flow [2022-11-18 21:03:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:03:16,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:03:16,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 625 transitions. [2022-11-18 21:03:16,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503401360544217 [2022-11-18 21:03:16,351 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 625 transitions. [2022-11-18 21:03:16,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 625 transitions. [2022-11-18 21:03:16,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:16,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 625 transitions. [2022-11-18 21:03:16,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 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 21:03:16,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 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 21:03:16,360 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 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 21:03:16,360 INFO L175 Difference]: Start difference. First operand has 119 places, 115 transitions, 254 flow. Second operand 5 states and 625 transitions. [2022-11-18 21:03:16,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 155 transitions, 497 flow [2022-11-18 21:03:16,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 155 transitions, 495 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:03:16,370 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 282 flow [2022-11-18 21:03:16,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2022-11-18 21:03:16,371 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 0 predicate places. [2022-11-18 21:03:16,371 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 282 flow [2022-11-18 21:03:16,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 0 states have call successors, (0), 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 21:03:16,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:16,373 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:16,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:03:16,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:16,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1076040062, now seen corresponding path program 1 times [2022-11-18 21:03:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:16,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111184221] [2022-11-18 21:03:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:16,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:16,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:16,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111184221] [2022-11-18 21:03:16,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111184221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:16,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986521758] [2022-11-18 21:03:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:16,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:16,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:16,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:16,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:03:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:03:16,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:16,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:17,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986521758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:17,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:03:17,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-18 21:03:17,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499131748] [2022-11-18 21:03:17,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:17,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:03:17,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:17,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:03:17,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:03:17,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-11-18 21:03:17,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 120.57142857142857) internal successors, (844), 7 states have internal predecessors, (844), 0 states have call successors, (0), 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 21:03:17,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:17,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-11-18 21:03:17,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:18,334 INFO L130 PetriNetUnfolder]: 1635/4655 cut-off events. [2022-11-18 21:03:18,334 INFO L131 PetriNetUnfolder]: For 698/783 co-relation queries the response was YES. [2022-11-18 21:03:18,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8412 conditions, 4655 events. 1635/4655 cut-off events. For 698/783 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 40421 event pairs, 172 based on Foata normal form. 63/3383 useless extension candidates. Maximal degree in co-relation 6499. Up to 777 conditions per place. [2022-11-18 21:03:18,393 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 69 selfloop transitions, 12 changer transitions 0/180 dead transitions. [2022-11-18 21:03:18,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 180 transitions, 620 flow [2022-11-18 21:03:18,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:03:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:03:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 925 transitions. [2022-11-18 21:03:18,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8989310009718173 [2022-11-18 21:03:18,398 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 925 transitions. [2022-11-18 21:03:18,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 925 transitions. [2022-11-18 21:03:18,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:18,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 925 transitions. [2022-11-18 21:03:18,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.14285714285714) internal successors, (925), 7 states have internal predecessors, (925), 0 states have call successors, (0), 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 21:03:18,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 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 21:03:18,406 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 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 21:03:18,407 INFO L175 Difference]: Start difference. First operand has 125 places, 118 transitions, 282 flow. Second operand 7 states and 925 transitions. [2022-11-18 21:03:18,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 180 transitions, 620 flow [2022-11-18 21:03:18,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 180 transitions, 618 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:03:18,419 INFO L231 Difference]: Finished difference. Result has 135 places, 127 transitions, 389 flow [2022-11-18 21:03:18,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=389, PETRI_PLACES=135, PETRI_TRANSITIONS=127} [2022-11-18 21:03:18,423 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 10 predicate places. [2022-11-18 21:03:18,424 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 127 transitions, 389 flow [2022-11-18 21:03:18,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.57142857142857) internal successors, (844), 7 states have internal predecessors, (844), 0 states have call successors, (0), 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 21:03:18,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:18,425 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:18,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:18,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:18,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:18,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:18,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1076040061, now seen corresponding path program 1 times [2022-11-18 21:03:18,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:18,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262445289] [2022-11-18 21:03:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:18,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:18,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:18,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262445289] [2022-11-18 21:03:18,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262445289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:18,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:18,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:03:18,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858471314] [2022-11-18 21:03:18,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:18,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:03:18,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:18,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:03:18,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:03:18,738 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-11-18 21:03:18,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 127 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 21:03:18,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:18,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-11-18 21:03:18,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:19,845 INFO L130 PetriNetUnfolder]: 1427/4573 cut-off events. [2022-11-18 21:03:19,845 INFO L131 PetriNetUnfolder]: For 6889/7643 co-relation queries the response was YES. [2022-11-18 21:03:19,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9429 conditions, 4573 events. 1427/4573 cut-off events. For 6889/7643 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 41269 event pairs, 764 based on Foata normal form. 96/3310 useless extension candidates. Maximal degree in co-relation 7273. Up to 1909 conditions per place. [2022-11-18 21:03:19,931 INFO L137 encePairwiseOnDemand]: 145/147 looper letters, 23 selfloop transitions, 1 changer transitions 0/123 dead transitions. [2022-11-18 21:03:19,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 123 transitions, 406 flow [2022-11-18 21:03:20,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:03:20,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:03:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2022-11-18 21:03:20,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503401360544217 [2022-11-18 21:03:20,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2022-11-18 21:03:20,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2022-11-18 21:03:20,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:20,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2022-11-18 21:03:20,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 21:03:20,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 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 21:03:20,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 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 21:03:20,028 INFO L175 Difference]: Start difference. First operand has 135 places, 127 transitions, 389 flow. Second operand 3 states and 375 transitions. [2022-11-18 21:03:20,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 123 transitions, 406 flow [2022-11-18 21:03:20,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 123 transitions, 394 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 21:03:20,038 INFO L231 Difference]: Finished difference. Result has 134 places, 123 transitions, 348 flow [2022-11-18 21:03:20,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=134, PETRI_TRANSITIONS=123} [2022-11-18 21:03:20,039 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 9 predicate places. [2022-11-18 21:03:20,040 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 123 transitions, 348 flow [2022-11-18 21:03:20,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 21:03:20,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:20,041 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:20,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:03:20,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:20,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:20,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1012634053, now seen corresponding path program 1 times [2022-11-18 21:03:20,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:20,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386860336] [2022-11-18 21:03:20,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:20,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:20,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:20,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386860336] [2022-11-18 21:03:20,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386860336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:20,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955791336] [2022-11-18 21:03:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:20,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:20,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:20,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:20,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:03:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:03:20,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:20,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:20,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955791336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:20,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:03:20,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:03:20,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230566492] [2022-11-18 21:03:20,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:20,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:03:20,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:03:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:03:20,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-11-18 21:03:20,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 123 transitions, 348 flow. Second operand has 12 states, 12 states have (on average 113.66666666666667) internal successors, (1364), 12 states have internal predecessors, (1364), 0 states have call successors, (0), 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 21:03:20,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:20,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-11-18 21:03:20,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:25,295 INFO L130 PetriNetUnfolder]: 11390/19208 cut-off events. [2022-11-18 21:03:25,296 INFO L131 PetriNetUnfolder]: For 25573/25573 co-relation queries the response was YES. [2022-11-18 21:03:25,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50279 conditions, 19208 events. 11390/19208 cut-off events. For 25573/25573 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 145191 event pairs, 1406 based on Foata normal form. 275/14042 useless extension candidates. Maximal degree in co-relation 50254. Up to 3720 conditions per place. [2022-11-18 21:03:25,648 INFO L137 encePairwiseOnDemand]: 140/147 looper letters, 237 selfloop transitions, 18 changer transitions 0/342 dead transitions. [2022-11-18 21:03:25,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 342 transitions, 1693 flow [2022-11-18 21:03:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:03:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:03:25,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2222 transitions. [2022-11-18 21:03:25,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8397581254724111 [2022-11-18 21:03:25,656 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2222 transitions. [2022-11-18 21:03:25,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2222 transitions. [2022-11-18 21:03:25,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:25,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2222 transitions. [2022-11-18 21:03:25,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 123.44444444444444) internal successors, (2222), 18 states have internal predecessors, (2222), 0 states have call successors, (0), 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 21:03:25,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 147.0) internal successors, (2793), 19 states have internal predecessors, (2793), 0 states have call successors, (0), 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 21:03:25,675 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 147.0) internal successors, (2793), 19 states have internal predecessors, (2793), 0 states have call successors, (0), 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 21:03:25,676 INFO L175 Difference]: Start difference. First operand has 134 places, 123 transitions, 348 flow. Second operand 18 states and 2222 transitions. [2022-11-18 21:03:25,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 342 transitions, 1693 flow [2022-11-18 21:03:25,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 342 transitions, 1692 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:03:25,701 INFO L231 Difference]: Finished difference. Result has 154 places, 135 transitions, 453 flow [2022-11-18 21:03:25,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=453, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2022-11-18 21:03:25,705 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 29 predicate places. [2022-11-18 21:03:25,705 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 453 flow [2022-11-18 21:03:25,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 113.66666666666667) internal successors, (1364), 12 states have internal predecessors, (1364), 0 states have call successors, (0), 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 21:03:25,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:25,707 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 21:03:25,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:25,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:25,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:25,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:25,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1326885023, now seen corresponding path program 1 times [2022-11-18 21:03:25,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:25,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898334713] [2022-11-18 21:03:25,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:25,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:26,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:26,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898334713] [2022-11-18 21:03:26,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898334713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:26,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498908747] [2022-11-18 21:03:26,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:26,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:26,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:26,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:26,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:03:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:26,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:03:26,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:26,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:26,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498908747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:26,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:03:26,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:03:26,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044185203] [2022-11-18 21:03:26,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:26,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:03:26,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:26,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:03:26,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:03:26,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-11-18 21:03:26,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 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 21:03:26,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:26,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-11-18 21:03:26,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:29,658 INFO L130 PetriNetUnfolder]: 10249/17781 cut-off events. [2022-11-18 21:03:29,658 INFO L131 PetriNetUnfolder]: For 27384/28340 co-relation queries the response was YES. [2022-11-18 21:03:29,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47878 conditions, 17781 events. 10249/17781 cut-off events. For 27384/28340 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 139095 event pairs, 625 based on Foata normal form. 528/13225 useless extension candidates. Maximal degree in co-relation 47850. Up to 6763 conditions per place. [2022-11-18 21:03:29,950 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 87 selfloop transitions, 11 changer transitions 0/185 dead transitions. [2022-11-18 21:03:29,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 185 transitions, 793 flow [2022-11-18 21:03:29,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:03:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:03:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 859 transitions. [2022-11-18 21:03:29,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8347910592808552 [2022-11-18 21:03:29,954 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 859 transitions. [2022-11-18 21:03:29,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 859 transitions. [2022-11-18 21:03:29,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:29,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 859 transitions. [2022-11-18 21:03:29,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 0 states have call successors, (0), 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 21:03:29,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 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 21:03:29,962 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 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 21:03:29,962 INFO L175 Difference]: Start difference. First operand has 154 places, 135 transitions, 453 flow. Second operand 7 states and 859 transitions. [2022-11-18 21:03:29,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 185 transitions, 793 flow [2022-11-18 21:03:30,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 185 transitions, 761 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 21:03:30,017 INFO L231 Difference]: Finished difference. Result has 150 places, 131 transitions, 416 flow [2022-11-18 21:03:30,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=416, PETRI_PLACES=150, PETRI_TRANSITIONS=131} [2022-11-18 21:03:30,021 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 25 predicate places. [2022-11-18 21:03:30,021 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 131 transitions, 416 flow [2022-11-18 21:03:30,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 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 21:03:30,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:30,023 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] [2022-11-18 21:03:30,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:30,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 21:03:30,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:30,383 INFO L85 PathProgramCache]: Analyzing trace with hash 5271700, now seen corresponding path program 1 times [2022-11-18 21:03:30,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:30,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24722634] [2022-11-18 21:03:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:30,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:30,501 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 21:03:30,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:30,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24722634] [2022-11-18 21:03:30,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24722634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:30,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:30,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:03:30,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701203651] [2022-11-18 21:03:30,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:30,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:03:30,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:30,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:03:30,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:30,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-11-18 21:03:30,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 131 transitions, 416 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 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 21:03:30,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:30,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-11-18 21:03:30,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:36,844 INFO L130 PetriNetUnfolder]: 21115/38146 cut-off events. [2022-11-18 21:03:36,844 INFO L131 PetriNetUnfolder]: For 27338/29071 co-relation queries the response was YES. [2022-11-18 21:03:37,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83184 conditions, 38146 events. 21115/38146 cut-off events. For 27338/29071 co-relation queries the response was YES. Maximal size of possible extension queue 1655. Compared 362548 event pairs, 10960 based on Foata normal form. 17/24564 useless extension candidates. Maximal degree in co-relation 83157. Up to 20047 conditions per place. [2022-11-18 21:03:37,344 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 85 selfloop transitions, 4 changer transitions 0/187 dead transitions. [2022-11-18 21:03:37,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 187 transitions, 851 flow [2022-11-18 21:03:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:03:37,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:03:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2022-11-18 21:03:37,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8489795918367347 [2022-11-18 21:03:37,347 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2022-11-18 21:03:37,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2022-11-18 21:03:37,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:37,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2022-11-18 21:03:37,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:37,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 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 21:03:37,355 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 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 21:03:37,355 INFO L175 Difference]: Start difference. First operand has 150 places, 131 transitions, 416 flow. Second operand 5 states and 624 transitions. [2022-11-18 21:03:37,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 187 transitions, 851 flow [2022-11-18 21:03:37,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 187 transitions, 837 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:03:37,412 INFO L231 Difference]: Finished difference. Result has 152 places, 134 transitions, 432 flow [2022-11-18 21:03:37,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=152, PETRI_TRANSITIONS=134} [2022-11-18 21:03:37,413 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 27 predicate places. [2022-11-18 21:03:37,413 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 134 transitions, 432 flow [2022-11-18 21:03:37,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 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 21:03:37,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:37,414 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] [2022-11-18 21:03:37,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:03:37,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:37,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:37,415 INFO L85 PathProgramCache]: Analyzing trace with hash 954362145, now seen corresponding path program 1 times [2022-11-18 21:03:37,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:37,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560232417] [2022-11-18 21:03:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:37,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:37,530 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 21:03:37,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:37,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560232417] [2022-11-18 21:03:37,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560232417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:37,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:37,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:03:37,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324769655] [2022-11-18 21:03:37,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:37,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:03:37,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:37,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:03:37,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:03:37,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-11-18 21:03:37,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 134 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 21:03:37,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:37,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-11-18 21:03:37,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:39,113 INFO L130 PetriNetUnfolder]: 2766/8913 cut-off events. [2022-11-18 21:03:39,113 INFO L131 PetriNetUnfolder]: For 8967/9106 co-relation queries the response was YES. [2022-11-18 21:03:39,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17429 conditions, 8913 events. 2766/8913 cut-off events. For 8967/9106 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 90952 event pairs, 904 based on Foata normal form. 105/6974 useless extension candidates. Maximal degree in co-relation 17398. Up to 3347 conditions per place. [2022-11-18 21:03:39,219 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 37 selfloop transitions, 2 changer transitions 1/150 dead transitions. [2022-11-18 21:03:39,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 150 transitions, 614 flow [2022-11-18 21:03:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:03:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:03:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-11-18 21:03:39,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8775510204081632 [2022-11-18 21:03:39,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-11-18 21:03:39,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-11-18 21:03:39,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:39,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-11-18 21:03:39,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 21:03:39,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 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 21:03:39,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 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 21:03:39,228 INFO L175 Difference]: Start difference. First operand has 152 places, 134 transitions, 432 flow. Second operand 3 states and 387 transitions. [2022-11-18 21:03:39,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 150 transitions, 614 flow [2022-11-18 21:03:39,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 150 transitions, 612 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:03:39,244 INFO L231 Difference]: Finished difference. Result has 154 places, 135 transitions, 448 flow [2022-11-18 21:03:39,244 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2022-11-18 21:03:39,247 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 29 predicate places. [2022-11-18 21:03:39,248 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 448 flow [2022-11-18 21:03:39,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 21:03:39,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:39,249 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] [2022-11-18 21:03:39,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:03:39,249 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:39,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:39,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1980963676, now seen corresponding path program 1 times [2022-11-18 21:03:39,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:39,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259653349] [2022-11-18 21:03:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:39,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:39,364 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 21:03:39,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:39,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259653349] [2022-11-18 21:03:39,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259653349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:39,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:39,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:03:39,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789183385] [2022-11-18 21:03:39,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:39,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:03:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:39,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:03:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:39,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-11-18 21:03:39,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 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 21:03:39,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:39,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-11-18 21:03:39,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:43,758 INFO L130 PetriNetUnfolder]: 15173/24009 cut-off events. [2022-11-18 21:03:43,758 INFO L131 PetriNetUnfolder]: For 47749/48209 co-relation queries the response was YES. [2022-11-18 21:03:43,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73446 conditions, 24009 events. 15173/24009 cut-off events. For 47749/48209 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 198043 event pairs, 4738 based on Foata normal form. 9/17704 useless extension candidates. Maximal degree in co-relation 73414. Up to 14099 conditions per place. [2022-11-18 21:03:44,332 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 85 selfloop transitions, 4 changer transitions 1/191 dead transitions. [2022-11-18 21:03:44,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 191 transitions, 960 flow [2022-11-18 21:03:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:03:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:03:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 619 transitions. [2022-11-18 21:03:44,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8421768707482993 [2022-11-18 21:03:44,335 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 619 transitions. [2022-11-18 21:03:44,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 619 transitions. [2022-11-18 21:03:44,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:44,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 619 transitions. [2022-11-18 21:03:44,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 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 21:03:44,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 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 21:03:44,342 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 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 21:03:44,342 INFO L175 Difference]: Start difference. First operand has 154 places, 135 transitions, 448 flow. Second operand 5 states and 619 transitions. [2022-11-18 21:03:44,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 191 transitions, 960 flow [2022-11-18 21:03:44,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 191 transitions, 958 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:03:44,368 INFO L231 Difference]: Finished difference. Result has 160 places, 138 transitions, 476 flow [2022-11-18 21:03:44,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=160, PETRI_TRANSITIONS=138} [2022-11-18 21:03:44,370 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 35 predicate places. [2022-11-18 21:03:44,370 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 138 transitions, 476 flow [2022-11-18 21:03:44,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 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 21:03:44,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:44,371 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:44,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:03:44,372 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:44,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:44,372 INFO L85 PathProgramCache]: Analyzing trace with hash 233088356, now seen corresponding path program 1 times [2022-11-18 21:03:44,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:44,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003812888] [2022-11-18 21:03:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:44,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:44,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:44,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003812888] [2022-11-18 21:03:44,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003812888] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:44,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175391722] [2022-11-18 21:03:44,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:44,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:44,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:44,484 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:44,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:03:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:44,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:03:44,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:44,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:44,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175391722] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:44,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:03:44,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-18 21:03:44,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194099997] [2022-11-18 21:03:44,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:44,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:03:44,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:44,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:03:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:03:44,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-11-18 21:03:44,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 138 transitions, 476 flow. Second operand has 7 states, 7 states have (on average 121.42857142857143) internal successors, (850), 7 states have internal predecessors, (850), 0 states have call successors, (0), 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 21:03:44,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:44,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-11-18 21:03:44,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:48,527 INFO L130 PetriNetUnfolder]: 5154/18326 cut-off events. [2022-11-18 21:03:48,527 INFO L131 PetriNetUnfolder]: For 17450/17958 co-relation queries the response was YES. [2022-11-18 21:03:48,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40443 conditions, 18326 events. 5154/18326 cut-off events. For 17450/17958 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 218998 event pairs, 394 based on Foata normal form. 346/15508 useless extension candidates. Maximal degree in co-relation 40407. Up to 3687 conditions per place. [2022-11-18 21:03:48,726 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 97 selfloop transitions, 12 changer transitions 0/222 dead transitions. [2022-11-18 21:03:48,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 222 transitions, 1231 flow [2022-11-18 21:03:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:03:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:03:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 911 transitions. [2022-11-18 21:03:48,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8853255587949466 [2022-11-18 21:03:48,729 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 911 transitions. [2022-11-18 21:03:48,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 911 transitions. [2022-11-18 21:03:48,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:48,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 911 transitions. [2022-11-18 21:03:48,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 0 states have call successors, (0), 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 21:03:48,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 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 21:03:48,736 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 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 21:03:48,737 INFO L175 Difference]: Start difference. First operand has 160 places, 138 transitions, 476 flow. Second operand 7 states and 911 transitions. [2022-11-18 21:03:48,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 222 transitions, 1231 flow [2022-11-18 21:03:48,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 222 transitions, 1229 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:03:48,776 INFO L231 Difference]: Finished difference. Result has 170 places, 147 transitions, 583 flow [2022-11-18 21:03:48,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=583, PETRI_PLACES=170, PETRI_TRANSITIONS=147} [2022-11-18 21:03:48,777 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 45 predicate places. [2022-11-18 21:03:48,777 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 147 transitions, 583 flow [2022-11-18 21:03:48,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.42857142857143) internal successors, (850), 7 states have internal predecessors, (850), 0 states have call successors, (0), 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 21:03:48,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:48,778 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:48,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:48,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 21:03:48,985 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:48,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:48,985 INFO L85 PathProgramCache]: Analyzing trace with hash 233088357, now seen corresponding path program 1 times [2022-11-18 21:03:48,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:48,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843285408] [2022-11-18 21:03:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:48,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:49,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:49,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843285408] [2022-11-18 21:03:49,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843285408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:49,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:49,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:03:49,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360848880] [2022-11-18 21:03:49,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:49,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:03:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:49,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:03:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:03:49,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-11-18 21:03:49,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 147 transitions, 583 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 21:03:49,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:49,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-11-18 21:03:49,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:52,631 INFO L130 PetriNetUnfolder]: 4098/17896 cut-off events. [2022-11-18 21:03:52,631 INFO L131 PetriNetUnfolder]: For 40569/46048 co-relation queries the response was YES. [2022-11-18 21:03:52,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44387 conditions, 17896 events. 4098/17896 cut-off events. For 40569/46048 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 222276 event pairs, 2261 based on Foata normal form. 719/15967 useless extension candidates. Maximal degree in co-relation 44345. Up to 5723 conditions per place. [2022-11-18 21:03:52,883 INFO L137 encePairwiseOnDemand]: 145/147 looper letters, 29 selfloop transitions, 1 changer transitions 0/143 dead transitions. [2022-11-18 21:03:52,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 143 transitions, 612 flow [2022-11-18 21:03:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:03:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:03:52,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2022-11-18 21:03:52,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8480725623582767 [2022-11-18 21:03:52,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2022-11-18 21:03:52,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2022-11-18 21:03:52,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:52,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2022-11-18 21:03:52,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 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 21:03:52,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 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 21:03:52,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 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 21:03:52,890 INFO L175 Difference]: Start difference. First operand has 170 places, 147 transitions, 583 flow. Second operand 3 states and 374 transitions. [2022-11-18 21:03:52,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 143 transitions, 612 flow [2022-11-18 21:03:52,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 143 transitions, 600 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 21:03:52,952 INFO L231 Difference]: Finished difference. Result has 169 places, 143 transitions, 542 flow [2022-11-18 21:03:52,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=542, PETRI_PLACES=169, PETRI_TRANSITIONS=143} [2022-11-18 21:03:52,953 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 44 predicate places. [2022-11-18 21:03:52,953 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 143 transitions, 542 flow [2022-11-18 21:03:52,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 21:03:52,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:52,954 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:52,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:03:52,954 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:03:52,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:52,955 INFO L85 PathProgramCache]: Analyzing trace with hash 659627047, now seen corresponding path program 1 times [2022-11-18 21:03:52,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:52,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580163154] [2022-11-18 21:03:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:52,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:53,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:53,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580163154] [2022-11-18 21:03:53,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580163154] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:53,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283982233] [2022-11-18 21:03:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:53,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:53,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:53,059 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:53,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:03:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:53,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:03:53,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:53,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:53,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283982233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:53,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:03:53,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:03:53,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640722892] [2022-11-18 21:03:53,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:53,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:03:53,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:03:53,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:03:53,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-11-18 21:03:53,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 143 transitions, 542 flow. Second operand has 12 states, 12 states have (on average 113.83333333333333) internal successors, (1366), 12 states have internal predecessors, (1366), 0 states have call successors, (0), 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 21:03:53,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:53,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-11-18 21:03:53,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:04:12,214 INFO L130 PetriNetUnfolder]: 47360/83602 cut-off events. [2022-11-18 21:04:12,215 INFO L131 PetriNetUnfolder]: For 278941/279266 co-relation queries the response was YES. [2022-11-18 21:04:12,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286530 conditions, 83602 events. 47360/83602 cut-off events. For 278941/279266 co-relation queries the response was YES. Maximal size of possible extension queue 3568. Compared 871839 event pairs, 5174 based on Foata normal form. 1441/79169 useless extension candidates. Maximal degree in co-relation 286492. Up to 14973 conditions per place. [2022-11-18 21:04:13,428 INFO L137 encePairwiseOnDemand]: 140/147 looper letters, 330 selfloop transitions, 18 changer transitions 1/450 dead transitions. [2022-11-18 21:04:13,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 450 transitions, 3283 flow [2022-11-18 21:04:13,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:04:13,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:04:13,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2197 transitions. [2022-11-18 21:04:13,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8303099017384732 [2022-11-18 21:04:13,434 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2197 transitions. [2022-11-18 21:04:13,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2197 transitions. [2022-11-18 21:04:13,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:04:13,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2197 transitions. [2022-11-18 21:04:13,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 122.05555555555556) internal successors, (2197), 18 states have internal predecessors, (2197), 0 states have call successors, (0), 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 21:04:13,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 147.0) internal successors, (2793), 19 states have internal predecessors, (2793), 0 states have call successors, (0), 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 21:04:13,448 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 147.0) internal successors, (2793), 19 states have internal predecessors, (2793), 0 states have call successors, (0), 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 21:04:13,449 INFO L175 Difference]: Start difference. First operand has 169 places, 143 transitions, 542 flow. Second operand 18 states and 2197 transitions. [2022-11-18 21:04:13,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 450 transitions, 3283 flow [2022-11-18 21:04:13,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 450 transitions, 3282 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:04:13,653 INFO L231 Difference]: Finished difference. Result has 189 places, 155 transitions, 647 flow [2022-11-18 21:04:13,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=647, PETRI_PLACES=189, PETRI_TRANSITIONS=155} [2022-11-18 21:04:13,655 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 64 predicate places. [2022-11-18 21:04:13,655 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 155 transitions, 647 flow [2022-11-18 21:04:13,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 113.83333333333333) internal successors, (1366), 12 states have internal predecessors, (1366), 0 states have call successors, (0), 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 21:04:13,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:13,656 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:13,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 21:04:13,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:13,862 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-18 21:04:13,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:13,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1026397539, now seen corresponding path program 1 times [2022-11-18 21:04:13,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:13,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342874909] [2022-11-18 21:04:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:13,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:13,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342874909] [2022-11-18 21:04:13,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342874909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:13,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026191222] [2022-11-18 21:04:13,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:13,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:13,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:13,945 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:13,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_109a29e8-11c5-40e6-94b2-94bb45edddab/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:04:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:14,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:04:14,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:14,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:14,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026191222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:14,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:04:14,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:04:14,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974463174] [2022-11-18 21:04:14,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:14,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:04:14,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:14,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:04:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:04:14,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-11-18 21:04:14,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 155 transitions, 647 flow. Second operand has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 0 states have call successors, (0), 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 21:04:14,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:14,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-11-18 21:04:14,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand