/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 19:12:55,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 19:12:55,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 19:12:55,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 19:12:55,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 19:12:55,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 19:12:55,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 19:12:55,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 19:12:55,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 19:12:55,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 19:12:55,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 19:12:55,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 19:12:55,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 19:12:55,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 19:12:55,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 19:12:55,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 19:12:55,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 19:12:55,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 19:12:55,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 19:12:55,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 19:12:55,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 19:12:55,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 19:12:55,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 19:12:55,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 19:12:55,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 19:12:55,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 19:12:55,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 19:12:55,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 19:12:55,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 19:12:55,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 19:12:55,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 19:12:55,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 19:12:55,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 19:12:55,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 19:12:55,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 19:12:55,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 19:12:55,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 19:12:55,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 19:12:55,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 19:12:55,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 19:12:55,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 19:12:55,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 19:12:55,590 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 19:12:55,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 19:12:55,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 19:12:55,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 19:12:55,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 19:12:55,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 19:12:55,593 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 19:12:55,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 19:12:55,593 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 19:12:55,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 19:12:55,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 19:12:55,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 19:12:55,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 19:12:55,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 19:12:55,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 19:12:55,594 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 19:12:55,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 19:12:55,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 19:12:55,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 19:12:55,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 19:12:55,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 19:12:55,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 19:12:55,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 19:12:55,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:12:55,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 19:12:55,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 19:12:55,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 19:12:55,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 19:12:55,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 19:12:55,596 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 19:12:55,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 19:12:55,596 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 19:12:55,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 19:12:55,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 19:12:55,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 19:12:55,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 19:12:55,881 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 19:12:55,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2022-12-05 19:12:56,925 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 19:12:57,146 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 19:12:57,147 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2022-12-05 19:12:57,153 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/526bf8d38/17f94c9b65c4479187642cc9f425b804/FLAGbe4a28515 [2022-12-05 19:12:57,169 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/526bf8d38/17f94c9b65c4479187642cc9f425b804 [2022-12-05 19:12:57,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 19:12:57,171 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 19:12:57,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 19:12:57,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 19:12:57,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 19:12:57,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b90880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57, skipping insertion in model container [2022-12-05 19:12:57,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 19:12:57,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 19:12:57,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,339 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,347 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,347 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,350 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,352 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,352 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,369 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-12-05 19:12:57,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:12:57,383 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 19:12:57,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,410 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,411 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,411 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:12:57,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:12:57,422 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-12-05 19:12:57,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:12:57,433 INFO L208 MainTranslator]: Completed translation [2022-12-05 19:12:57,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57 WrapperNode [2022-12-05 19:12:57,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 19:12:57,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 19:12:57,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 19:12:57,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 19:12:57,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,473 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 317 [2022-12-05 19:12:57,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 19:12:57,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 19:12:57,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 19:12:57,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 19:12:57,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,508 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 19:12:57,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 19:12:57,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 19:12:57,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 19:12:57,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (1/1) ... [2022-12-05 19:12:57,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:12:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:12:57,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 19:12:57,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 19:12:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 19:12:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 19:12:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 19:12:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 19:12:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 19:12:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 19:12:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 19:12:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 19:12:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 19:12:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 19:12:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 19:12:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 19:12:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 19:12:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 19:12:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 19:12:57,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 19:12:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 19:12:57,591 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 19:12:57,664 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 19:12:57,666 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 19:12:57,987 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 19:12:58,119 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 19:12:58,119 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-05 19:12:58,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:12:58 BoogieIcfgContainer [2022-12-05 19:12:58,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 19:12:58,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 19:12:58,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 19:12:58,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 19:12:58,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 07:12:57" (1/3) ... [2022-12-05 19:12:58,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5423e1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:12:58, skipping insertion in model container [2022-12-05 19:12:58,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:12:57" (2/3) ... [2022-12-05 19:12:58,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5423e1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:12:58, skipping insertion in model container [2022-12-05 19:12:58,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:12:58" (3/3) ... [2022-12-05 19:12:58,126 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2022-12-05 19:12:58,138 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 19:12:58,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 19:12:58,138 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 19:12:58,233 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 19:12:58,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 256 transitions, 536 flow [2022-12-05 19:12:58,319 INFO L130 PetriNetUnfolder]: 25/253 cut-off events. [2022-12-05 19:12:58,319 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 19:12:58,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 25/253 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 206 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 215. Up to 4 conditions per place. [2022-12-05 19:12:58,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 256 transitions, 536 flow [2022-12-05 19:12:58,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 243 transitions, 504 flow [2022-12-05 19:12:58,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 19:12:58,338 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=false, 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;@419669b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 19:12:58,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 19:12:58,376 INFO L130 PetriNetUnfolder]: 25/242 cut-off events. [2022-12-05 19:12:58,377 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 19:12:58,377 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:12:58,378 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:12:58,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:12:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:12:58,381 INFO L85 PathProgramCache]: Analyzing trace with hash -877186411, now seen corresponding path program 1 times [2022-12-05 19:12:58,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:12:58,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661088768] [2022-12-05 19:12:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:12:58,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:12:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:12:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:12:58,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:12:58,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661088768] [2022-12-05 19:12:58,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661088768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:12:58,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:12:58,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 19:12:58,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486531085] [2022-12-05 19:12:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:12:58,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-05 19:12:58,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:12:58,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-05 19:12:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-05 19:12:58,747 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 256 [2022-12-05 19:12:58,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 243 transitions, 504 flow. Second operand has 2 states, 2 states have (on average 229.5) internal successors, (459), 2 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:12:58,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:12:58,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 256 [2022-12-05 19:12:58,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:12:58,899 INFO L130 PetriNetUnfolder]: 138/555 cut-off events. [2022-12-05 19:12:58,899 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-12-05 19:12:58,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 555 events. 138/555 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1963 event pairs, 55 based on Foata normal form. 107/597 useless extension candidates. Maximal degree in co-relation 559. Up to 180 conditions per place. [2022-12-05 19:12:58,907 INFO L137 encePairwiseOnDemand]: 239/256 looper letters, 13 selfloop transitions, 0 changer transitions 8/226 dead transitions. [2022-12-05 19:12:58,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 226 transitions, 496 flow [2022-12-05 19:12:58,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-05 19:12:58,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-05 19:12:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 480 transitions. [2022-12-05 19:12:58,922 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9375 [2022-12-05 19:12:58,923 INFO L175 Difference]: Start difference. First operand has 228 places, 243 transitions, 504 flow. Second operand 2 states and 480 transitions. [2022-12-05 19:12:58,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 226 transitions, 496 flow [2022-12-05 19:12:58,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 226 transitions, 484 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 19:12:58,932 INFO L231 Difference]: Finished difference. Result has 223 places, 218 transitions, 442 flow [2022-12-05 19:12:58,933 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=442, PETRI_PLACES=223, PETRI_TRANSITIONS=218} [2022-12-05 19:12:58,938 INFO L294 CegarLoopForPetriNet]: 228 programPoint places, -5 predicate places. [2022-12-05 19:12:58,938 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 218 transitions, 442 flow [2022-12-05 19:12:58,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 229.5) internal successors, (459), 2 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:12:58,939 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:12:58,941 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:12:58,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 19:12:58,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:12:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:12:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1221562857, now seen corresponding path program 1 times [2022-12-05 19:12:58,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:12:58,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327675007] [2022-12-05 19:12:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:12:58,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:12:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:12:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:12:59,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:12:59,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327675007] [2022-12-05 19:12:59,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327675007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:12:59,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:12:59,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:12:59,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21870189] [2022-12-05 19:12:59,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:12:59,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:12:59,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:12:59,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:12:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:12:59,310 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 256 [2022-12-05 19:12:59,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 218 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:12:59,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:12:59,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 256 [2022-12-05 19:12:59,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:12:59,418 INFO L130 PetriNetUnfolder]: 128/498 cut-off events. [2022-12-05 19:12:59,418 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-05 19:12:59,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 498 events. 128/498 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1625 event pairs, 21 based on Foata normal form. 8/464 useless extension candidates. Maximal degree in co-relation 690. Up to 132 conditions per place. [2022-12-05 19:12:59,422 INFO L137 encePairwiseOnDemand]: 253/256 looper letters, 22 selfloop transitions, 2 changer transitions 0/225 dead transitions. [2022-12-05 19:12:59,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 225 transitions, 506 flow [2022-12-05 19:12:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:12:59,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:12:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2022-12-05 19:12:59,424 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8958333333333334 [2022-12-05 19:12:59,424 INFO L175 Difference]: Start difference. First operand has 223 places, 218 transitions, 442 flow. Second operand 3 states and 688 transitions. [2022-12-05 19:12:59,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 225 transitions, 506 flow [2022-12-05 19:12:59,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 225 transitions, 506 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 19:12:59,432 INFO L231 Difference]: Finished difference. Result has 218 places, 219 transitions, 454 flow [2022-12-05 19:12:59,432 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=218, PETRI_TRANSITIONS=219} [2022-12-05 19:12:59,433 INFO L294 CegarLoopForPetriNet]: 228 programPoint places, -10 predicate places. [2022-12-05 19:12:59,433 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 219 transitions, 454 flow [2022-12-05 19:12:59,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:12:59,433 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:12:59,434 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:12:59,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 19:12:59,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:12:59,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:12:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1778065609, now seen corresponding path program 2 times [2022-12-05 19:12:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:12:59,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090825630] [2022-12-05 19:12:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:12:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:12:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:12:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:12:59,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:12:59,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090825630] [2022-12-05 19:12:59,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090825630] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:12:59,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:12:59,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:12:59,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461169089] [2022-12-05 19:12:59,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:12:59,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:12:59,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:12:59,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:12:59,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:12:59,839 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 256 [2022-12-05 19:12:59,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 219 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 193.16666666666666) internal successors, (1159), 6 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:12:59,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:12:59,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 256 [2022-12-05 19:12:59,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:13:00,033 INFO L130 PetriNetUnfolder]: 160/680 cut-off events. [2022-12-05 19:13:00,033 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-12-05 19:13:00,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 680 events. 160/680 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2526 event pairs, 60 based on Foata normal form. 7/617 useless extension candidates. Maximal degree in co-relation 1022. Up to 196 conditions per place. [2022-12-05 19:13:00,039 INFO L137 encePairwiseOnDemand]: 246/256 looper letters, 48 selfloop transitions, 8 changer transitions 21/244 dead transitions. [2022-12-05 19:13:00,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 244 transitions, 662 flow [2022-12-05 19:13:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:13:00,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:13:00,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1760 transitions. [2022-12-05 19:13:00,042 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2022-12-05 19:13:00,042 INFO L175 Difference]: Start difference. First operand has 218 places, 219 transitions, 454 flow. Second operand 9 states and 1760 transitions. [2022-12-05 19:13:00,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 244 transitions, 662 flow [2022-12-05 19:13:00,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 244 transitions, 660 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:13:00,046 INFO L231 Difference]: Finished difference. Result has 227 places, 220 transitions, 480 flow [2022-12-05 19:13:00,046 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=480, PETRI_PLACES=227, PETRI_TRANSITIONS=220} [2022-12-05 19:13:00,047 INFO L294 CegarLoopForPetriNet]: 228 programPoint places, -1 predicate places. [2022-12-05 19:13:00,048 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 220 transitions, 480 flow [2022-12-05 19:13:00,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.16666666666666) internal successors, (1159), 6 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:00,049 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:13:00,049 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:13:00,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 19:13:00,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:13:00,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:13:00,050 INFO L85 PathProgramCache]: Analyzing trace with hash -210558260, now seen corresponding path program 1 times [2022-12-05 19:13:00,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:13:00,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938673777] [2022-12-05 19:13:00,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:13:00,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:13:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:13:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:13:00,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:13:00,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938673777] [2022-12-05 19:13:00,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938673777] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:13:00,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:13:00,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 19:13:00,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137711958] [2022-12-05 19:13:00,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:13:00,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 19:13:00,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:13:00,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 19:13:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 19:13:00,264 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 256 [2022-12-05 19:13:00,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 220 transitions, 480 flow. Second operand has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:00,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:13:00,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 256 [2022-12-05 19:13:00,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:13:00,416 INFO L130 PetriNetUnfolder]: 233/972 cut-off events. [2022-12-05 19:13:00,416 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-12-05 19:13:00,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 972 events. 233/972 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5045 event pairs, 61 based on Foata normal form. 1/842 useless extension candidates. Maximal degree in co-relation 1450. Up to 202 conditions per place. [2022-12-05 19:13:00,422 INFO L137 encePairwiseOnDemand]: 251/256 looper letters, 55 selfloop transitions, 2 changer transitions 7/236 dead transitions. [2022-12-05 19:13:00,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 236 transitions, 653 flow [2022-12-05 19:13:00,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 19:13:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 19:13:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 978 transitions. [2022-12-05 19:13:00,424 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7640625 [2022-12-05 19:13:00,424 INFO L175 Difference]: Start difference. First operand has 227 places, 220 transitions, 480 flow. Second operand 5 states and 978 transitions. [2022-12-05 19:13:00,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 236 transitions, 653 flow [2022-12-05 19:13:00,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 236 transitions, 633 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-12-05 19:13:00,428 INFO L231 Difference]: Finished difference. Result has 226 places, 221 transitions, 478 flow [2022-12-05 19:13:00,428 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=226, PETRI_TRANSITIONS=221} [2022-12-05 19:13:00,429 INFO L294 CegarLoopForPetriNet]: 228 programPoint places, -2 predicate places. [2022-12-05 19:13:00,429 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 221 transitions, 478 flow [2022-12-05 19:13:00,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:00,430 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:13:00,430 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:13:00,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 19:13:00,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:13:00,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:13:00,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2012798752, now seen corresponding path program 1 times [2022-12-05 19:13:00,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:13:00,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142431494] [2022-12-05 19:13:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:13:00,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:13:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:13:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:13:00,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:13:00,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142431494] [2022-12-05 19:13:00,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142431494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:13:00,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:13:00,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:13:00,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823344527] [2022-12-05 19:13:00,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:13:00,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:13:00,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:13:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:13:00,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:13:00,503 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 256 [2022-12-05 19:13:00,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 221 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:00,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:13:00,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 256 [2022-12-05 19:13:00,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:13:00,671 INFO L130 PetriNetUnfolder]: 346/1300 cut-off events. [2022-12-05 19:13:00,672 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-12-05 19:13:00,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 1300 events. 346/1300 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7391 event pairs, 140 based on Foata normal form. 0/1136 useless extension candidates. Maximal degree in co-relation 2026. Up to 341 conditions per place. [2022-12-05 19:13:00,678 INFO L137 encePairwiseOnDemand]: 253/256 looper letters, 27 selfloop transitions, 2 changer transitions 0/229 dead transitions. [2022-12-05 19:13:00,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 229 transitions, 560 flow [2022-12-05 19:13:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:13:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:13:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2022-12-05 19:13:00,680 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.890625 [2022-12-05 19:13:00,680 INFO L175 Difference]: Start difference. First operand has 226 places, 221 transitions, 478 flow. Second operand 3 states and 684 transitions. [2022-12-05 19:13:00,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 229 transitions, 560 flow [2022-12-05 19:13:00,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 554 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 19:13:00,683 INFO L231 Difference]: Finished difference. Result has 225 places, 222 transitions, 486 flow [2022-12-05 19:13:00,683 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=225, PETRI_TRANSITIONS=222} [2022-12-05 19:13:00,684 INFO L294 CegarLoopForPetriNet]: 228 programPoint places, -3 predicate places. [2022-12-05 19:13:00,684 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 222 transitions, 486 flow [2022-12-05 19:13:00,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:00,684 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:13:00,685 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:13:00,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 19:13:00,685 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:13:00,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:13:00,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1641592268, now seen corresponding path program 1 times [2022-12-05 19:13:00,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:13:00,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707924979] [2022-12-05 19:13:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:13:00,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:13:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:13:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:13:00,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:13:00,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707924979] [2022-12-05 19:13:00,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707924979] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:13:00,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636868715] [2022-12-05 19:13:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:13:00,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:13:00,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:13:00,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:13:00,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 19:13:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:13:01,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 19:13:01,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:13:01,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2022-12-05 19:13:01,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:13:01,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:13:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:13:01,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636868715] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:13:01,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:13:01,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-12-05 19:13:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839066547] [2022-12-05 19:13:01,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:13:01,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:13:01,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:13:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:13:01,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:13:01,104 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 256 [2022-12-05 19:13:01,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 222 transitions, 486 flow. Second operand has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:01,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:13:01,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 256 [2022-12-05 19:13:01,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:13:01,716 INFO L130 PetriNetUnfolder]: 2082/4760 cut-off events. [2022-12-05 19:13:01,716 INFO L131 PetriNetUnfolder]: For 862/862 co-relation queries the response was YES. [2022-12-05 19:13:01,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8943 conditions, 4760 events. 2082/4760 cut-off events. For 862/862 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 35546 event pairs, 515 based on Foata normal form. 0/4382 useless extension candidates. Maximal degree in co-relation 8935. Up to 1466 conditions per place. [2022-12-05 19:13:01,741 INFO L137 encePairwiseOnDemand]: 249/256 looper letters, 79 selfloop transitions, 16 changer transitions 0/281 dead transitions. [2022-12-05 19:13:01,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 281 transitions, 838 flow [2022-12-05 19:13:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:13:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:13:01,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1517 transitions. [2022-12-05 19:13:01,744 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8465401785714286 [2022-12-05 19:13:01,744 INFO L175 Difference]: Start difference. First operand has 225 places, 222 transitions, 486 flow. Second operand 7 states and 1517 transitions. [2022-12-05 19:13:01,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 281 transitions, 838 flow [2022-12-05 19:13:01,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 281 transitions, 834 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 19:13:01,749 INFO L231 Difference]: Finished difference. Result has 233 places, 237 transitions, 587 flow [2022-12-05 19:13:01,749 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=587, PETRI_PLACES=233, PETRI_TRANSITIONS=237} [2022-12-05 19:13:01,750 INFO L294 CegarLoopForPetriNet]: 228 programPoint places, 5 predicate places. [2022-12-05 19:13:01,750 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 237 transitions, 587 flow [2022-12-05 19:13:01,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:01,750 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:13:01,751 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:13:01,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 19:13:01,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-05 19:13:01,964 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:13:01,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:13:01,965 INFO L85 PathProgramCache]: Analyzing trace with hash -99917196, now seen corresponding path program 2 times [2022-12-05 19:13:01,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:13:01,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114311974] [2022-12-05 19:13:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:13:01,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:13:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:13:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:13:02,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:13:02,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114311974] [2022-12-05 19:13:02,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114311974] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:13:02,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058768924] [2022-12-05 19:13:02,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 19:13:02,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:13:02,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:13:02,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:13:02,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 19:13:02,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-05 19:13:02,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:13:02,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-05 19:13:02,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:13:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-05 19:13:02,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:13:02,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058768924] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:13:02,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 19:13:02,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-12-05 19:13:02,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653736402] [2022-12-05 19:13:02,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:13:02,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:13:02,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:13:02,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:13:02,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:13:02,668 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 256 [2022-12-05 19:13:02,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 237 transitions, 587 flow. Second operand has 6 states, 6 states have (on average 194.16666666666666) internal successors, (1165), 6 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:02,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:13:02,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 256 [2022-12-05 19:13:02,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:13:03,087 INFO L130 PetriNetUnfolder]: 727/3139 cut-off events. [2022-12-05 19:13:03,087 INFO L131 PetriNetUnfolder]: For 597/604 co-relation queries the response was YES. [2022-12-05 19:13:03,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5624 conditions, 3139 events. 727/3139 cut-off events. For 597/604 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 26901 event pairs, 270 based on Foata normal form. 47/2847 useless extension candidates. Maximal degree in co-relation 5613. Up to 681 conditions per place. [2022-12-05 19:13:03,101 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 52 selfloop transitions, 6 changer transitions 12/253 dead transitions. [2022-12-05 19:13:03,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 253 transitions, 772 flow [2022-12-05 19:13:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:13:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:13:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1377 transitions. [2022-12-05 19:13:03,104 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7684151785714286 [2022-12-05 19:13:03,105 INFO L175 Difference]: Start difference. First operand has 233 places, 237 transitions, 587 flow. Second operand 7 states and 1377 transitions. [2022-12-05 19:13:03,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 253 transitions, 772 flow [2022-12-05 19:13:03,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 253 transitions, 772 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 19:13:03,113 INFO L231 Difference]: Finished difference. Result has 241 places, 238 transitions, 611 flow [2022-12-05 19:13:03,113 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=611, PETRI_PLACES=241, PETRI_TRANSITIONS=238} [2022-12-05 19:13:03,113 INFO L294 CegarLoopForPetriNet]: 228 programPoint places, 13 predicate places. [2022-12-05 19:13:03,113 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 238 transitions, 611 flow [2022-12-05 19:13:03,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.16666666666666) internal successors, (1165), 6 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:03,114 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:13:03,114 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:13:03,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 19:13:03,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-05 19:13:03,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:13:03,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:13:03,320 INFO L85 PathProgramCache]: Analyzing trace with hash 888435329, now seen corresponding path program 1 times [2022-12-05 19:13:03,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:13:03,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370427717] [2022-12-05 19:13:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:13:03,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:13:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:13:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:13:03,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:13:03,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370427717] [2022-12-05 19:13:03,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370427717] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:13:03,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907170718] [2022-12-05 19:13:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:13:03,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:13:03,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:13:03,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:13:03,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 19:13:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:13:03,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-05 19:13:03,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:13:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-05 19:13:03,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:13:03,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907170718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:13:03,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 19:13:03,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-12-05 19:13:03,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382638813] [2022-12-05 19:13:03,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:13:03,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:13:03,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:13:03,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:13:03,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-12-05 19:13:03,996 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 256 [2022-12-05 19:13:03,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 238 transitions, 611 flow. Second operand has 6 states, 6 states have (on average 194.0) internal successors, (1164), 6 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:03,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:13:03,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 256 [2022-12-05 19:13:03,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:13:04,400 INFO L130 PetriNetUnfolder]: 680/2819 cut-off events. [2022-12-05 19:13:04,400 INFO L131 PetriNetUnfolder]: For 566/583 co-relation queries the response was YES. [2022-12-05 19:13:04,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5145 conditions, 2819 events. 680/2819 cut-off events. For 566/583 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21999 event pairs, 297 based on Foata normal form. 47/2589 useless extension candidates. Maximal degree in co-relation 5131. Up to 847 conditions per place. [2022-12-05 19:13:04,420 INFO L137 encePairwiseOnDemand]: 245/256 looper letters, 52 selfloop transitions, 8 changer transitions 34/276 dead transitions. [2022-12-05 19:13:04,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 276 transitions, 908 flow [2022-12-05 19:13:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:13:04,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:13:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1763 transitions. [2022-12-05 19:13:04,423 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7651909722222222 [2022-12-05 19:13:04,423 INFO L175 Difference]: Start difference. First operand has 241 places, 238 transitions, 611 flow. Second operand 9 states and 1763 transitions. [2022-12-05 19:13:04,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 276 transitions, 908 flow [2022-12-05 19:13:04,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 276 transitions, 892 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 19:13:04,431 INFO L231 Difference]: Finished difference. Result has 246 places, 239 transitions, 631 flow [2022-12-05 19:13:04,431 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=631, PETRI_PLACES=246, PETRI_TRANSITIONS=239} [2022-12-05 19:13:04,433 INFO L294 CegarLoopForPetriNet]: 228 programPoint places, 18 predicate places. [2022-12-05 19:13:04,434 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 239 transitions, 631 flow [2022-12-05 19:13:04,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.0) internal successors, (1164), 6 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:04,434 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:13:04,435 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:13:04,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-05 19:13:04,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:13:04,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:13:04,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:13:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash 632927314, now seen corresponding path program 1 times [2022-12-05 19:13:04,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:13:04,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238449756] [2022-12-05 19:13:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:13:04,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:13:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:13:04,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:13:04,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:13:04,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238449756] [2022-12-05 19:13:04,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238449756] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:13:04,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060851855] [2022-12-05 19:13:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:13:04,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:13:04,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:13:05,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:13:05,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 19:13:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:13:05,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-05 19:13:05,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:13:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-05 19:13:05,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:13:05,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060851855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:13:05,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 19:13:05,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-12-05 19:13:05,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863948617] [2022-12-05 19:13:05,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:13:05,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:13:05,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:13:05,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:13:05,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-05 19:13:05,192 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 256 [2022-12-05 19:13:05,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 239 transitions, 631 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:05,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:13:05,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 256 [2022-12-05 19:13:05,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:13:05,475 INFO L130 PetriNetUnfolder]: 709/2588 cut-off events. [2022-12-05 19:13:05,475 INFO L131 PetriNetUnfolder]: For 940/953 co-relation queries the response was YES. [2022-12-05 19:13:05,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5077 conditions, 2588 events. 709/2588 cut-off events. For 940/953 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 19815 event pairs, 267 based on Foata normal form. 44/2393 useless extension candidates. Maximal degree in co-relation 5061. Up to 955 conditions per place. [2022-12-05 19:13:05,492 INFO L137 encePairwiseOnDemand]: 252/256 looper letters, 28 selfloop transitions, 2 changer transitions 1/248 dead transitions. [2022-12-05 19:13:05,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 248 transitions, 730 flow [2022-12-05 19:13:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:13:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:13:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2022-12-05 19:13:05,493 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.890625 [2022-12-05 19:13:05,493 INFO L175 Difference]: Start difference. First operand has 246 places, 239 transitions, 631 flow. Second operand 3 states and 684 transitions. [2022-12-05 19:13:05,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 248 transitions, 730 flow [2022-12-05 19:13:05,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 248 transitions, 716 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-05 19:13:05,498 INFO L231 Difference]: Finished difference. Result has 242 places, 240 transitions, 633 flow [2022-12-05 19:13:05,499 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=633, PETRI_PLACES=242, PETRI_TRANSITIONS=240} [2022-12-05 19:13:05,499 INFO L294 CegarLoopForPetriNet]: 228 programPoint places, 14 predicate places. [2022-12-05 19:13:05,499 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 240 transitions, 633 flow [2022-12-05 19:13:05,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:05,500 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:13:05,500 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:13:05,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 19:13:05,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:13:05,705 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:13:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:13:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash 858621408, now seen corresponding path program 2 times [2022-12-05 19:13:05,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:13:05,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359921146] [2022-12-05 19:13:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:13:05,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:13:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:13:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:13:06,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:13:06,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359921146] [2022-12-05 19:13:06,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359921146] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:13:06,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566348632] [2022-12-05 19:13:06,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 19:13:06,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:13:06,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:13:06,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:13:06,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 19:13:06,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 19:13:06,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:13:06,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-05 19:13:06,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:13:06,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:13:06,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-05 19:13:06,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2022-12-05 19:13:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:13:06,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:13:06,518 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_315 (Array Int Int))) (not (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_315) c_~q1~0.base) (+ (* c_~q1_back~0 4) c_~q1~0.offset))))) is different from false [2022-12-05 19:13:06,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2022-12-05 19:13:06,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-12-05 19:13:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:13:06,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566348632] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:13:06,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:13:06,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2022-12-05 19:13:06,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043403483] [2022-12-05 19:13:06,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:13:06,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-05 19:13:06,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:13:06,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-05 19:13:06,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=574, Unknown=1, NotChecked=48, Total=702 [2022-12-05 19:13:06,855 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 256 [2022-12-05 19:13:06,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 240 transitions, 633 flow. Second operand has 27 states, 27 states have (on average 174.33333333333334) internal successors, (4707), 27 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:06,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:13:06,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 256 [2022-12-05 19:13:06,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:13:08,572 INFO L130 PetriNetUnfolder]: 3262/7842 cut-off events. [2022-12-05 19:13:08,572 INFO L131 PetriNetUnfolder]: For 5538/5567 co-relation queries the response was YES. [2022-12-05 19:13:08,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18453 conditions, 7842 events. 3262/7842 cut-off events. For 5538/5567 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 65830 event pairs, 677 based on Foata normal form. 58/7419 useless extension candidates. Maximal degree in co-relation 18436. Up to 1464 conditions per place. [2022-12-05 19:13:08,604 INFO L137 encePairwiseOnDemand]: 220/256 looper letters, 64 selfloop transitions, 37 changer transitions 46/305 dead transitions. [2022-12-05 19:13:08,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 305 transitions, 1189 flow [2022-12-05 19:13:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:13:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:13:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3529 transitions. [2022-12-05 19:13:08,609 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6892578125 [2022-12-05 19:13:08,609 INFO L175 Difference]: Start difference. First operand has 242 places, 240 transitions, 633 flow. Second operand 20 states and 3529 transitions. [2022-12-05 19:13:08,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 305 transitions, 1189 flow [2022-12-05 19:13:08,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 305 transitions, 1187 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:13:08,619 INFO L231 Difference]: Finished difference. Result has 263 places, 241 transitions, 758 flow [2022-12-05 19:13:08,619 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=758, PETRI_PLACES=263, PETRI_TRANSITIONS=241} [2022-12-05 19:13:08,619 INFO L294 CegarLoopForPetriNet]: 228 programPoint places, 35 predicate places. [2022-12-05 19:13:08,620 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 241 transitions, 758 flow [2022-12-05 19:13:08,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.33333333333334) internal successors, (4707), 27 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:08,621 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:13:08,621 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:13:08,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-05 19:13:08,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-05 19:13:08,827 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:13:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:13:08,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1772709476, now seen corresponding path program 3 times [2022-12-05 19:13:08,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:13:08,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907195325] [2022-12-05 19:13:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:13:08,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:13:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:13:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:13:09,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:13:09,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907195325] [2022-12-05 19:13:09,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907195325] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:13:09,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886129565] [2022-12-05 19:13:09,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 19:13:09,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:13:09,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:13:09,265 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:13:09,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 19:13:09,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 19:13:09,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:13:09,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-05 19:13:09,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:13:09,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-12-05 19:13:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-05 19:13:09,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:13:09,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2022-12-05 19:13:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-05 19:13:10,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886129565] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:13:10,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:13:10,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2022-12-05 19:13:10,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650794316] [2022-12-05 19:13:10,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:13:10,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-05 19:13:10,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:13:10,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-05 19:13:10,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2022-12-05 19:13:10,323 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 256 [2022-12-05 19:13:10,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 241 transitions, 758 flow. Second operand has 30 states, 30 states have (on average 142.2) internal successors, (4266), 30 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:10,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:13:10,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 256 [2022-12-05 19:13:10,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:13:12,807 INFO L130 PetriNetUnfolder]: 2082/7074 cut-off events. [2022-12-05 19:13:12,808 INFO L131 PetriNetUnfolder]: For 10977/11073 co-relation queries the response was YES. [2022-12-05 19:13:12,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18630 conditions, 7074 events. 2082/7074 cut-off events. For 10977/11073 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 66291 event pairs, 362 based on Foata normal form. 415/6875 useless extension candidates. Maximal degree in co-relation 18610. Up to 2367 conditions per place. [2022-12-05 19:13:12,842 INFO L137 encePairwiseOnDemand]: 211/256 looper letters, 0 selfloop transitions, 0 changer transitions 410/410 dead transitions. [2022-12-05 19:13:12,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 410 transitions, 2321 flow [2022-12-05 19:13:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-05 19:13:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-05 19:13:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 7680 transitions. [2022-12-05 19:13:12,862 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2022-12-05 19:13:12,862 INFO L175 Difference]: Start difference. First operand has 263 places, 241 transitions, 758 flow. Second operand 55 states and 7680 transitions. [2022-12-05 19:13:12,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 410 transitions, 2321 flow [2022-12-05 19:13:12,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 410 transitions, 2116 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-12-05 19:13:12,897 INFO L231 Difference]: Finished difference. Result has 283 places, 0 transitions, 0 flow [2022-12-05 19:13:12,897 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=0, PETRI_PLACES=283, PETRI_TRANSITIONS=0} [2022-12-05 19:13:12,897 INFO L294 CegarLoopForPetriNet]: 228 programPoint places, 55 predicate places. [2022-12-05 19:13:12,898 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 0 transitions, 0 flow [2022-12-05 19:13:12,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 142.2) internal successors, (4266), 30 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:13:12,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 19:13:12,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 19:13:12,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 19:13:12,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 19:13:12,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-05 19:13:13,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:13:13,108 INFO L458 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1] [2022-12-05 19:13:13,112 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 19:13:13,112 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 19:13:13,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 07:13:13 BasicIcfg [2022-12-05 19:13:13,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 19:13:13,115 INFO L158 Benchmark]: Toolchain (without parser) took 15944.01ms. Allocated memory was 253.8MB in the beginning and 1.1GB in the end (delta: 818.9MB). Free memory was 229.8MB in the beginning and 632.1MB in the end (delta: -402.3MB). Peak memory consumption was 476.4MB. Max. memory is 8.0GB. [2022-12-05 19:13:13,115 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 253.8MB. Free memory is still 230.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 19:13:13,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.97ms. Allocated memory is still 253.8MB. Free memory was 229.3MB in the beginning and 215.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-05 19:13:13,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.79ms. Allocated memory is still 253.8MB. Free memory was 215.1MB in the beginning and 212.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 19:13:13,116 INFO L158 Benchmark]: Boogie Preprocessor took 36.74ms. Allocated memory is still 253.8MB. Free memory was 212.5MB in the beginning and 210.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 19:13:13,116 INFO L158 Benchmark]: RCFGBuilder took 609.48ms. Allocated memory is still 253.8MB. Free memory was 210.4MB in the beginning and 169.5MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2022-12-05 19:13:13,116 INFO L158 Benchmark]: TraceAbstraction took 14992.41ms. Allocated memory was 253.8MB in the beginning and 1.1GB in the end (delta: 818.9MB). Free memory was 168.9MB in the beginning and 632.1MB in the end (delta: -463.1MB). Peak memory consumption was 415.6MB. Max. memory is 8.0GB. [2022-12-05 19:13:13,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 253.8MB. Free memory is still 230.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 259.97ms. Allocated memory is still 253.8MB. Free memory was 229.3MB in the beginning and 215.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.79ms. Allocated memory is still 253.8MB. Free memory was 215.1MB in the beginning and 212.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.74ms. Allocated memory is still 253.8MB. Free memory was 212.5MB in the beginning and 210.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 609.48ms. Allocated memory is still 253.8MB. Free memory was 210.4MB in the beginning and 169.5MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * TraceAbstraction took 14992.41ms. Allocated memory was 253.8MB in the beginning and 1.1GB in the end (delta: 818.9MB). Free memory was 168.9MB in the beginning and 632.1MB in the end (delta: -463.1MB). Peak memory consumption was 415.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 156]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 277 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.9s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1745 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1745 mSDsluCounter, 1425 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 108 IncrementalHoareTripleChecker+Unchecked, 1185 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2569 IncrementalHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 240 mSDtfsCounter, 2569 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2113 GetRequests, 1924 SyntacticMatches, 2 SemanticMatches, 187 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=758occurred in iteration=10, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 3502 NumberOfCodeBlocks, 3424 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 4134 ConstructedInterpolants, 7 QuantifiedInterpolants, 12885 SizeOfPredicates, 57 NumberOfNonLiveVariables, 3002 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 147/201 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 19:13:13,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...