./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN --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 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- 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-6b4ec56 [2022-11-20 10:53:27,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:53:27,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:53:27,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:53:27,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:53:27,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:53:27,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:53:27,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:53:27,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:53:27,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:53:27,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:53:27,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:53:27,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:53:27,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:53:27,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:53:27,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:53:27,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:53:27,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:53:27,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:53:27,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:53:27,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:53:27,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:53:27,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:53:27,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:53:27,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:53:27,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:53:27,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:53:27,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:53:27,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:53:27,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:53:27,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:53:27,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:53:27,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:53:27,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:53:27,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:53:27,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:53:27,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:53:27,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:53:27,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:53:27,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:53:27,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:53:27,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:53:27,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:53:27,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:53:27,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:53:27,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:53:27,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:53:27,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:53:27,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:53:27,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:53:27,482 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:53:27,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:53:27,484 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:53:27,484 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:53:27,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:53:27,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:53:27,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:53:27,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:53:27,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:53:27,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:53:27,486 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:53:27,486 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:53:27,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:53:27,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:53:27,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:53:27,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:53:27,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:53:27,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:53:27,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:53:27,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:53:27,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:53:27,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:53:27,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:53:27,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:53:27,491 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:53:27,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:53:27,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:53:27,491 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_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2022-11-20 10:53:27,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:53:27,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:53:27,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:53:27,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:53:27,873 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:53:27,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-20 10:53:31,109 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:53:31,312 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:53:31,312 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-20 10:53:31,321 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/data/7c2e7059f/e1e548e0e8ae4c04972de460b5fc73fd/FLAGc9c07f7dc [2022-11-20 10:53:31,336 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/data/7c2e7059f/e1e548e0e8ae4c04972de460b5fc73fd [2022-11-20 10:53:31,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:53:31,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:53:31,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:53:31,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:53:31,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:53:31,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0f9bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31, skipping insertion in model container [2022-11-20 10:53:31,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:53:31,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:53:31,615 WARN L237 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_309c1e5d-943b-4ca6-90da-0d3df495fa6a/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-20 10:53:31,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:53:31,637 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:53:31,670 WARN L237 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_309c1e5d-943b-4ca6-90da-0d3df495fa6a/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-20 10:53:31,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:53:31,690 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:53:31,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31 WrapperNode [2022-11-20 10:53:31,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:53:31,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:53:31,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:53:31,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:53:31,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,757 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 349 [2022-11-20 10:53:31,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:53:31,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:53:31,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:53:31,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:53:31,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,826 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:53:31,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:53:31,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:53:31,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:53:31,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (1/1) ... [2022-11-20 10:53:31,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:53:31,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:31,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:53:31,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:53:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:53:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:53:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:53:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:53:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:53:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:53:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:53:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:53:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:53:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:53:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:53:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:53:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:53:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:53:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:53:31,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:53:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:53:31,913 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:53:32,057 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:53:32,060 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:53:32,720 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:53:32,992 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:53:32,992 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 10:53:32,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:53:32 BoogieIcfgContainer [2022-11-20 10:53:32,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:53:33,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:53:33,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:53:33,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:53:33,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:53:31" (1/3) ... [2022-11-20 10:53:33,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c185cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:53:33, skipping insertion in model container [2022-11-20 10:53:33,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:31" (2/3) ... [2022-11-20 10:53:33,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c185cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:53:33, skipping insertion in model container [2022-11-20 10:53:33,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:53:32" (3/3) ... [2022-11-20 10:53:33,012 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2022-11-20 10:53:33,021 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:53:33,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:53:33,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-20 10:53:33,033 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:53:33,220 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:53:33,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 320 transitions, 664 flow [2022-11-20 10:53:33,499 INFO L130 PetriNetUnfolder]: 25/317 cut-off events. [2022-11-20 10:53:33,500 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:53:33,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 317 events. 25/317 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 383 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 268. Up to 4 conditions per place. [2022-11-20 10:53:33,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 320 transitions, 664 flow [2022-11-20 10:53:33,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 296 transitions, 607 flow [2022-11-20 10:53:33,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:53:33,568 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;@227ed32f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:53:33,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-20 10:53:33,587 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-11-20 10:53:33,587 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:53:33,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:33,588 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:33,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-20 10:53:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash 377759568, now seen corresponding path program 1 times [2022-11-20 10:53:33,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:33,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341616679] [2022-11-20 10:53:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:33,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:34,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:34,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341616679] [2022-11-20 10:53:34,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341616679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:34,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:34,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:53:34,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719236510] [2022-11-20 10:53:34,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:34,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:53:34,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:34,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:53:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:53:34,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-20 10:53:34,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 296 transitions, 607 flow. Second operand has 4 states, 4 states have (on average 232.5) internal successors, (930), 4 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:34,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:34,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-20 10:53:34,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:37,125 INFO L130 PetriNetUnfolder]: 4253/8798 cut-off events. [2022-11-20 10:53:37,125 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-11-20 10:53:37,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14891 conditions, 8798 events. 4253/8798 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 80211 event pairs, 2222 based on Foata normal form. 1032/5226 useless extension candidates. Maximal degree in co-relation 6749. Up to 2820 conditions per place. [2022-11-20 10:53:37,238 INFO L137 encePairwiseOnDemand]: 278/320 looper letters, 104 selfloop transitions, 14 changer transitions 7/328 dead transitions. [2022-11-20 10:53:37,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 328 transitions, 922 flow [2022-11-20 10:53:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:53:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:53:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1317 transitions. [2022-11-20 10:53:37,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823125 [2022-11-20 10:53:37,260 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1317 transitions. [2022-11-20 10:53:37,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1317 transitions. [2022-11-20 10:53:37,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:37,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1317 transitions. [2022-11-20 10:53:37,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 263.4) internal successors, (1317), 5 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:37,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:37,286 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:37,288 INFO L175 Difference]: Start difference. First operand has 282 places, 296 transitions, 607 flow. Second operand 5 states and 1317 transitions. [2022-11-20 10:53:37,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 328 transitions, 922 flow [2022-11-20 10:53:37,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 328 transitions, 904 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:53:37,309 INFO L231 Difference]: Finished difference. Result has 278 places, 278 transitions, 644 flow [2022-11-20 10:53:37,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=644, PETRI_PLACES=278, PETRI_TRANSITIONS=278} [2022-11-20 10:53:37,316 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, -4 predicate places. [2022-11-20 10:53:37,316 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 278 transitions, 644 flow [2022-11-20 10:53:37,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.5) internal successors, (930), 4 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:37,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:37,318 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:37,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:53:37,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-20 10:53:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:37,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1559495874, now seen corresponding path program 1 times [2022-11-20 10:53:37,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:37,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819812393] [2022-11-20 10:53:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:37,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:37,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819812393] [2022-11-20 10:53:37,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819812393] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:37,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722782915] [2022-11-20 10:53:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:37,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:37,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:37,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:37,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:53:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:53:37,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:37,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:37,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722782915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:37,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:53:37,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:53:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501273694] [2022-11-20 10:53:37,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:37,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:53:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:53:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:53:37,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-20 10:53:37,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 278 transitions, 644 flow. Second operand has 12 states, 12 states have (on average 233.66666666666666) internal successors, (2804), 12 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:37,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:37,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-20 10:53:37,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:44,206 INFO L130 PetriNetUnfolder]: 10631/21828 cut-off events. [2022-11-20 10:53:44,207 INFO L131 PetriNetUnfolder]: For 323/323 co-relation queries the response was YES. [2022-11-20 10:53:44,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36791 conditions, 21828 events. 10631/21828 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 1185. Compared 217436 event pairs, 5555 based on Foata normal form. 9/10362 useless extension candidates. Maximal degree in co-relation 29064. Up to 2811 conditions per place. [2022-11-20 10:53:44,435 INFO L137 encePairwiseOnDemand]: 297/320 looper letters, 224 selfloop transitions, 62 changer transitions 0/489 dead transitions. [2022-11-20 10:53:44,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 489 transitions, 1740 flow [2022-11-20 10:53:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:53:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:53:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4453 transitions. [2022-11-20 10:53:44,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7730902777777777 [2022-11-20 10:53:44,447 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4453 transitions. [2022-11-20 10:53:44,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4453 transitions. [2022-11-20 10:53:44,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:44,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4453 transitions. [2022-11-20 10:53:44,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 247.38888888888889) internal successors, (4453), 18 states have internal predecessors, (4453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:44,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 320.0) internal successors, (6080), 19 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:44,480 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 320.0) internal successors, (6080), 19 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:44,481 INFO L175 Difference]: Start difference. First operand has 278 places, 278 transitions, 644 flow. Second operand 18 states and 4453 transitions. [2022-11-20 10:53:44,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 489 transitions, 1740 flow [2022-11-20 10:53:44,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 489 transitions, 1732 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:53:44,504 INFO L231 Difference]: Finished difference. Result has 291 places, 320 transitions, 1006 flow [2022-11-20 10:53:44,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1006, PETRI_PLACES=291, PETRI_TRANSITIONS=320} [2022-11-20 10:53:44,506 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 9 predicate places. [2022-11-20 10:53:44,507 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 320 transitions, 1006 flow [2022-11-20 10:53:44,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 233.66666666666666) internal successors, (2804), 12 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:44,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:44,511 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:44,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:44,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:44,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-20 10:53:44,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1099730840, now seen corresponding path program 1 times [2022-11-20 10:53:44,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:44,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985389479] [2022-11-20 10:53:44,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:44,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:44,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:44,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985389479] [2022-11-20 10:53:44,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985389479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:44,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446506538] [2022-11-20 10:53:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:44,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:44,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:44,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:44,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:53:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:45,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:53:45,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:45,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:53:45,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446506538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:45,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:53:45,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:53:45,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767266784] [2022-11-20 10:53:45,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:45,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:53:45,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:45,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:53:45,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:53:45,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-20 10:53:45,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 320 transitions, 1006 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:45,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:45,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-20 10:53:45,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:50,348 INFO L130 PetriNetUnfolder]: 10631/21816 cut-off events. [2022-11-20 10:53:50,348 INFO L131 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2022-11-20 10:53:50,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36847 conditions, 21816 events. 10631/21816 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 1189. Compared 217779 event pairs, 5555 based on Foata normal form. 12/10353 useless extension candidates. Maximal degree in co-relation 29434. Up to 11172 conditions per place. [2022-11-20 10:53:50,669 INFO L137 encePairwiseOnDemand]: 303/320 looper letters, 105 selfloop transitions, 43 changer transitions 0/351 dead transitions. [2022-11-20 10:53:50,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 351 transitions, 1319 flow [2022-11-20 10:53:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:53:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:53:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1735 transitions. [2022-11-20 10:53:50,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7745535714285714 [2022-11-20 10:53:50,675 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1735 transitions. [2022-11-20 10:53:50,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1735 transitions. [2022-11-20 10:53:50,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:50,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1735 transitions. [2022-11-20 10:53:50,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 247.85714285714286) internal successors, (1735), 7 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:50,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:50,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:50,689 INFO L175 Difference]: Start difference. First operand has 291 places, 320 transitions, 1006 flow. Second operand 7 states and 1735 transitions. [2022-11-20 10:53:50,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 351 transitions, 1319 flow [2022-11-20 10:53:50,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 351 transitions, 1203 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 10:53:50,700 INFO L231 Difference]: Finished difference. Result has 285 places, 308 transitions, 895 flow [2022-11-20 10:53:50,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=895, PETRI_PLACES=285, PETRI_TRANSITIONS=308} [2022-11-20 10:53:50,706 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 3 predicate places. [2022-11-20 10:53:50,707 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 308 transitions, 895 flow [2022-11-20 10:53:50,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:50,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:50,708 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:50,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:50,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:50,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-20 10:53:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1591095600, now seen corresponding path program 2 times [2022-11-20 10:53:50,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:50,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162209899] [2022-11-20 10:53:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:50,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:51,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:51,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162209899] [2022-11-20 10:53:51,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162209899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:51,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88375974] [2022-11-20 10:53:51,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:53:51,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:51,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:51,272 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:51,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:53:51,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:53:51,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:51,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:53:51,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:53:51,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:53:51,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88375974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:51,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:53:51,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 10:53:51,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847444126] [2022-11-20 10:53:51,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:53:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:51,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:53:51,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:53:51,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 320 [2022-11-20 10:53:51,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 308 transitions, 895 flow. Second operand has 18 states, 18 states have (on average 213.61111111111111) internal successors, (3845), 18 states have internal predecessors, (3845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:51,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:51,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 320 [2022-11-20 10:53:51,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:57,936 INFO L130 PetriNetUnfolder]: 9346/23370 cut-off events. [2022-11-20 10:53:57,936 INFO L131 PetriNetUnfolder]: For 574/574 co-relation queries the response was YES. [2022-11-20 10:53:58,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38159 conditions, 23370 events. 9346/23370 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 242474 event pairs, 6587 based on Foata normal form. 6/12659 useless extension candidates. Maximal degree in co-relation 32148. Up to 1950 conditions per place. [2022-11-20 10:53:58,141 INFO L137 encePairwiseOnDemand]: 290/320 looper letters, 304 selfloop transitions, 97 changer transitions 0/583 dead transitions. [2022-11-20 10:53:58,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 583 transitions, 2384 flow [2022-11-20 10:53:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 10:53:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 10:53:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10711 transitions. [2022-11-20 10:53:58,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6830994897959184 [2022-11-20 10:53:58,178 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10711 transitions. [2022-11-20 10:53:58,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10711 transitions. [2022-11-20 10:53:58,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:58,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10711 transitions. [2022-11-20 10:53:58,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 218.59183673469389) internal successors, (10711), 49 states have internal predecessors, (10711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:58,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 320.0) internal successors, (16000), 50 states have internal predecessors, (16000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:58,269 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 320.0) internal successors, (16000), 50 states have internal predecessors, (16000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:58,277 INFO L175 Difference]: Start difference. First operand has 285 places, 308 transitions, 895 flow. Second operand 49 states and 10711 transitions. [2022-11-20 10:53:58,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 583 transitions, 2384 flow [2022-11-20 10:53:58,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 583 transitions, 2315 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:53:58,296 INFO L231 Difference]: Finished difference. Result has 329 places, 346 transitions, 1234 flow [2022-11-20 10:53:58,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1234, PETRI_PLACES=329, PETRI_TRANSITIONS=346} [2022-11-20 10:53:58,298 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 47 predicate places. [2022-11-20 10:53:58,299 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 346 transitions, 1234 flow [2022-11-20 10:53:58,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 213.61111111111111) internal successors, (3845), 18 states have internal predecessors, (3845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:58,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:58,302 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:58,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:58,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 10:53:58,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-20 10:53:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:58,509 INFO L85 PathProgramCache]: Analyzing trace with hash 96278973, now seen corresponding path program 1 times [2022-11-20 10:53:58,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:58,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539643407] [2022-11-20 10:53:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:58,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:59,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:59,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539643407] [2022-11-20 10:53:59,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539643407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:59,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326116048] [2022-11-20 10:53:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:59,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:59,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:59,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:59,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:53:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:59,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:53:59,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:59,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:59,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326116048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:59,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:53:59,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 10:53:59,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135634922] [2022-11-20 10:53:59,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:59,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 10:53:59,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:59,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 10:53:59,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:53:59,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-20 10:53:59,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 346 transitions, 1234 flow. Second operand has 32 states, 32 states have (on average 234.28125) internal successors, (7497), 32 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:59,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:59,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-20 10:53:59,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:12,789 INFO L130 PetriNetUnfolder]: 23986/51800 cut-off events. [2022-11-20 10:54:12,789 INFO L131 PetriNetUnfolder]: For 1705/1705 co-relation queries the response was YES. [2022-11-20 10:54:13,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86429 conditions, 51800 events. 23986/51800 cut-off events. For 1705/1705 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 545520 event pairs, 12870 based on Foata normal form. 16/26511 useless extension candidates. Maximal degree in co-relation 85729. Up to 2955 conditions per place. [2022-11-20 10:54:13,254 INFO L137 encePairwiseOnDemand]: 301/320 looper letters, 623 selfloop transitions, 160 changer transitions 0/992 dead transitions. [2022-11-20 10:54:13,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 992 transitions, 4877 flow [2022-11-20 10:54:13,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 10:54:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 10:54:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10963 transitions. [2022-11-20 10:54:13,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.778622159090909 [2022-11-20 10:54:13,295 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10963 transitions. [2022-11-20 10:54:13,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10963 transitions. [2022-11-20 10:54:13,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:13,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10963 transitions. [2022-11-20 10:54:13,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 249.1590909090909) internal successors, (10963), 44 states have internal predecessors, (10963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:13,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 320.0) internal successors, (14400), 45 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:13,374 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 320.0) internal successors, (14400), 45 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:13,374 INFO L175 Difference]: Start difference. First operand has 329 places, 346 transitions, 1234 flow. Second operand 44 states and 10963 transitions. [2022-11-20 10:54:13,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 992 transitions, 4877 flow [2022-11-20 10:54:13,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 992 transitions, 4623 flow, removed 73 selfloop flow, removed 15 redundant places. [2022-11-20 10:54:13,399 INFO L231 Difference]: Finished difference. Result has 366 places, 439 transitions, 2121 flow [2022-11-20 10:54:13,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2121, PETRI_PLACES=366, PETRI_TRANSITIONS=439} [2022-11-20 10:54:13,400 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 84 predicate places. [2022-11-20 10:54:13,401 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 439 transitions, 2121 flow [2022-11-20 10:54:13,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 234.28125) internal successors, (7497), 32 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:13,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:13,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:13,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:13,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309c1e5d-943b-4ca6-90da-0d3df495fa6a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:13,610 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-20 10:54:13,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:13,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1963570520, now seen corresponding path program 1 times [2022-11-20 10:54:13,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:13,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354370648] [2022-11-20 10:54:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:13,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:13,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:13,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354370648] [2022-11-20 10:54:13,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354370648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:13,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:13,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:13,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596054095] [2022-11-20 10:54:13,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:13,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:13,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:13,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:13,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:13,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 320 [2022-11-20 10:54:13,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 439 transitions, 2121 flow. Second operand has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:13,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:13,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 320 [2022-11-20 10:54:13,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand