/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 18:16:23,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 18:16:23,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 18:16:23,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 18:16:23,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 18:16:23,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 18:16:23,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 18:16:23,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 18:16:23,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 18:16:23,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 18:16:23,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 18:16:23,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 18:16:23,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 18:16:23,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 18:16:23,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 18:16:23,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 18:16:23,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 18:16:23,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 18:16:23,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 18:16:23,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 18:16:23,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 18:16:23,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 18:16:23,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 18:16:23,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 18:16:23,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 18:16:23,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 18:16:23,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 18:16:23,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 18:16:23,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 18:16:23,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 18:16:23,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 18:16:23,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 18:16:23,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 18:16:23,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 18:16:23,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 18:16:23,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 18:16:23,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 18:16:23,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 18:16:23,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 18:16:23,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 18:16:23,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 18:16:23,653 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 [2022-12-06 18:16:23,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 18:16:23,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 18:16:23,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 18:16:23,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 18:16:23,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 18:16:23,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 18:16:23,672 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 18:16:23,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 18:16:23,672 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 18:16:23,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 18:16:23,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 18:16:23,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 18:16:23,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 18:16:23,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 18:16:23,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 18:16:23,673 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 18:16:23,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 18:16:23,674 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 18:16:23,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 18:16:23,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 18:16:23,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 18:16:23,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 18:16:23,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 18:16:23,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:16:23,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 18:16:23,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 18:16:23,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 18:16:23,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 18:16:23,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 18:16:23,675 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 18:16:23,675 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 18:16:23,675 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 18:16:23,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 18:16:23,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 18:16:23,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 18:16:23,933 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 18:16:23,934 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 18:16:23,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2022-12-06 18:16:24,918 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 18:16:25,098 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 18:16:25,099 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2022-12-06 18:16:25,103 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724b38ad0/b800358c28c54cddb5235de663cb0b4f/FLAG73b3c4cb8 [2022-12-06 18:16:25,113 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724b38ad0/b800358c28c54cddb5235de663cb0b4f [2022-12-06 18:16:25,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 18:16:25,116 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 18:16:25,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 18:16:25,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 18:16:25,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 18:16:25,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582348e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25, skipping insertion in model container [2022-12-06 18:16:25,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 18:16:25,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 18:16:25,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,248 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-prod-cons.wvr.c[3056,3069] [2022-12-06 18:16:25,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:16:25,262 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 18:16:25,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:16:25,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:16:25,300 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-prod-cons.wvr.c[3056,3069] [2022-12-06 18:16:25,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:16:25,314 INFO L208 MainTranslator]: Completed translation [2022-12-06 18:16:25,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25 WrapperNode [2022-12-06 18:16:25,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 18:16:25,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 18:16:25,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 18:16:25,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 18:16:25,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,357 INFO L138 Inliner]: procedures = 25, calls = 50, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 166 [2022-12-06 18:16:25,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 18:16:25,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 18:16:25,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 18:16:25,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 18:16:25,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,392 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 18:16:25,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 18:16:25,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 18:16:25,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 18:16:25,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (1/1) ... [2022-12-06 18:16:25,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:16:25,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:16:25,424 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) [2022-12-06 18:16:25,443 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 [2022-12-06 18:16:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 18:16:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 18:16:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 18:16:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 18:16:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 18:16:25,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 18:16:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 18:16:25,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 18:16:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 18:16:25,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 18:16:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 18:16:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 18:16:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 18:16:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 18:16:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 18:16:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 18:16:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 18:16:25,459 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 18:16:25,579 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 18:16:25,581 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 18:16:25,822 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 18:16:25,884 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 18:16:25,884 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-06 18:16:25,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:16:25 BoogieIcfgContainer [2022-12-06 18:16:25,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 18:16:25,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 18:16:25,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 18:16:25,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 18:16:25,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:16:25" (1/3) ... [2022-12-06 18:16:25,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5278f376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:16:25, skipping insertion in model container [2022-12-06 18:16:25,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:16:25" (2/3) ... [2022-12-06 18:16:25,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5278f376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:16:25, skipping insertion in model container [2022-12-06 18:16:25,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:16:25" (3/3) ... [2022-12-06 18:16:25,898 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2022-12-06 18:16:25,912 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 18:16:25,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 18:16:25,912 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 18:16:25,992 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-06 18:16:26,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 144 transitions, 312 flow [2022-12-06 18:16:26,091 INFO L130 PetriNetUnfolder]: 11/141 cut-off events. [2022-12-06 18:16:26,091 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 18:16:26,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 141 events. 11/141 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 82 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 112. Up to 3 conditions per place. [2022-12-06 18:16:26,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 144 transitions, 312 flow [2022-12-06 18:16:26,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 131 transitions, 280 flow [2022-12-06 18:16:26,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 18:16:26,121 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;@3c0cd62b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 18:16:26,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-06 18:16:26,162 INFO L130 PetriNetUnfolder]: 11/130 cut-off events. [2022-12-06 18:16:26,162 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 18:16:26,162 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:16:26,163 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] [2022-12-06 18:16:26,163 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)] === [2022-12-06 18:16:26,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:16:26,167 INFO L85 PathProgramCache]: Analyzing trace with hash -630135818, now seen corresponding path program 1 times [2022-12-06 18:16:26,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:16:26,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111085162] [2022-12-06 18:16:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:16:26,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:16:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:16:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:16:26,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:16:26,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111085162] [2022-12-06 18:16:26,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111085162] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:16:26,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:16:26,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 18:16:26,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023229447] [2022-12-06 18:16:26,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:16:26,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 18:16:26,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:16:26,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 18:16:26,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 18:16:26,644 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 144 [2022-12-06 18:16:26,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:16:26,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:16:26,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 144 [2022-12-06 18:16:26,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:16:26,756 INFO L130 PetriNetUnfolder]: 108/342 cut-off events. [2022-12-06 18:16:26,756 INFO L131 PetriNetUnfolder]: For 94/95 co-relation queries the response was YES. [2022-12-06 18:16:26,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 342 events. 108/342 cut-off events. For 94/95 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1230 event pairs, 8 based on Foata normal form. 38/354 useless extension candidates. Maximal degree in co-relation 453. Up to 61 conditions per place. [2022-12-06 18:16:26,763 INFO L137 encePairwiseOnDemand]: 132/144 looper letters, 30 selfloop transitions, 5 changer transitions 4/142 dead transitions. [2022-12-06 18:16:26,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 142 transitions, 384 flow [2022-12-06 18:16:26,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 18:16:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 18:16:26,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2022-12-06 18:16:26,778 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8944444444444445 [2022-12-06 18:16:26,782 INFO L294 CegarLoopForPetriNet]: 130 programPoint places, 4 predicate places. [2022-12-06 18:16:26,782 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 142 transitions, 384 flow [2022-12-06 18:16:26,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:16:26,783 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:16:26,783 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] [2022-12-06 18:16:26,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 18:16:26,784 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)] === [2022-12-06 18:16:26,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:16:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash -614742234, now seen corresponding path program 2 times [2022-12-06 18:16:26,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:16:26,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123175418] [2022-12-06 18:16:26,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:16:26,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:16:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:16:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:16:27,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:16:27,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123175418] [2022-12-06 18:16:27,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123175418] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:16:27,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:16:27,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 18:16:27,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682900999] [2022-12-06 18:16:27,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:16:27,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 18:16:27,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:16:27,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 18:16:27,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-06 18:16:27,247 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 144 [2022-12-06 18:16:27,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 142 transitions, 384 flow. Second operand has 8 states, 8 states have (on average 98.875) internal successors, (791), 8 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:16:27,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:16:27,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 144 [2022-12-06 18:16:27,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:16:27,534 INFO L130 PetriNetUnfolder]: 223/631 cut-off events. [2022-12-06 18:16:27,534 INFO L131 PetriNetUnfolder]: For 237/385 co-relation queries the response was YES. [2022-12-06 18:16:27,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 631 events. 223/631 cut-off events. For 237/385 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3490 event pairs, 17 based on Foata normal form. 4/603 useless extension candidates. Maximal degree in co-relation 1319. Up to 144 conditions per place. [2022-12-06 18:16:27,541 INFO L137 encePairwiseOnDemand]: 131/144 looper letters, 74 selfloop transitions, 11 changer transitions 9/177 dead transitions. [2022-12-06 18:16:27,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 177 transitions, 723 flow [2022-12-06 18:16:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-06 18:16:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-06 18:16:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1111 transitions. [2022-12-06 18:16:27,543 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7013888888888888 [2022-12-06 18:16:27,543 INFO L294 CegarLoopForPetriNet]: 130 programPoint places, 14 predicate places. [2022-12-06 18:16:27,544 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 177 transitions, 723 flow [2022-12-06 18:16:27,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.875) internal successors, (791), 8 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:16:27,544 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:16:27,545 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] [2022-12-06 18:16:27,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 18:16:27,545 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)] === [2022-12-06 18:16:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:16:27,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1366089379, now seen corresponding path program 1 times [2022-12-06 18:16:27,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:16:27,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901403243] [2022-12-06 18:16:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:16:27,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:16:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:16:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:16:27,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:16:27,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901403243] [2022-12-06 18:16:27,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901403243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:16:27,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:16:27,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 18:16:27,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353164903] [2022-12-06 18:16:27,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:16:27,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 18:16:27,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:16:27,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 18:16:27,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 18:16:27,725 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 144 [2022-12-06 18:16:27,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 177 transitions, 723 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:16:27,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:16:27,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 144 [2022-12-06 18:16:27,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:16:27,823 INFO L130 PetriNetUnfolder]: 203/580 cut-off events. [2022-12-06 18:16:27,824 INFO L131 PetriNetUnfolder]: For 664/915 co-relation queries the response was YES. [2022-12-06 18:16:27,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 580 events. 203/580 cut-off events. For 664/915 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2969 event pairs, 11 based on Foata normal form. 18/559 useless extension candidates. Maximal degree in co-relation 1322. Up to 148 conditions per place. [2022-12-06 18:16:27,828 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 36 selfloop transitions, 8 changer transitions 14/188 dead transitions. [2022-12-06 18:16:27,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 188 transitions, 925 flow [2022-12-06 18:16:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 18:16:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 18:16:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-12-06 18:16:27,830 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8865740740740741 [2022-12-06 18:16:27,831 INFO L294 CegarLoopForPetriNet]: 130 programPoint places, 16 predicate places. [2022-12-06 18:16:27,831 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 188 transitions, 925 flow [2022-12-06 18:16:27,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:16:27,832 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:16:27,832 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] [2022-12-06 18:16:27,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 18:16:27,832 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)] === [2022-12-06 18:16:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:16:27,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1780744650, now seen corresponding path program 1 times [2022-12-06 18:16:27,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:16:27,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810197143] [2022-12-06 18:16:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:16:27,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:16:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:16:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:16:27,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:16:27,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810197143] [2022-12-06 18:16:27,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810197143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:16:27,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:16:27,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 18:16:27,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338516469] [2022-12-06 18:16:27,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:16:27,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:16:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:16:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:16:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:16:27,982 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 144 [2022-12-06 18:16:27,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 188 transitions, 925 flow. Second operand has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:16:27,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:16:27,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 144 [2022-12-06 18:16:27,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:16:28,109 INFO L130 PetriNetUnfolder]: 243/735 cut-off events. [2022-12-06 18:16:28,109 INFO L131 PetriNetUnfolder]: For 1383/1552 co-relation queries the response was YES. [2022-12-06 18:16:28,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080 conditions, 735 events. 243/735 cut-off events. For 1383/1552 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4029 event pairs, 18 based on Foata normal form. 15/700 useless extension candidates. Maximal degree in co-relation 1131. Up to 210 conditions per place. [2022-12-06 18:16:28,114 INFO L137 encePairwiseOnDemand]: 136/144 looper letters, 49 selfloop transitions, 6 changer transitions 24/202 dead transitions. [2022-12-06 18:16:28,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 202 transitions, 1184 flow [2022-12-06 18:16:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 18:16:28,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 18:16:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 830 transitions. [2022-12-06 18:16:28,116 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8234126984126984 [2022-12-06 18:16:28,116 INFO L294 CegarLoopForPetriNet]: 130 programPoint places, 22 predicate places. [2022-12-06 18:16:28,117 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 202 transitions, 1184 flow [2022-12-06 18:16:28,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:16:28,117 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:16:28,117 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] [2022-12-06 18:16:28,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 18:16:28,117 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)] === [2022-12-06 18:16:28,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:16:28,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1054595113, now seen corresponding path program 1 times [2022-12-06 18:16:28,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:16:28,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584649397] [2022-12-06 18:16:28,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:16:28,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:16:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:16:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:16:29,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:16:29,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584649397] [2022-12-06 18:16:29,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584649397] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:16:29,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158264977] [2022-12-06 18:16:29,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:16:29,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:16:29,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:16:29,600 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) [2022-12-06 18:16:29,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 18:16:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:16:29,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-06 18:16:29,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:16:29,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:16:30,160 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-06 18:16:30,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-06 18:16:30,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-06 18:16:30,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:16:31,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 18:16:31,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-06 18:16:31,123 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 18 treesize of output 20 [2022-12-06 18:16:31,253 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 23 treesize of output 7 [2022-12-06 18:16:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:16:31,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:16:31,515 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_94 (Array Int Int))) (< (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_94) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) (+ c_~W~0 1))) is different from false [2022-12-06 18:16:33,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:16:33,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2022-12-06 18:16:33,182 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:16:33,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 362 treesize of output 350 [2022-12-06 18:16:33,188 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 314 treesize of output 266 [2022-12-06 18:16:33,194 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 266 treesize of output 242 [2022-12-06 18:16:33,203 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:16:33,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 146 [2022-12-06 18:16:34,725 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 10 treesize of output 8 [2022-12-06 18:16:34,729 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 10 treesize of output 8 [2022-12-06 18:16:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:16:34,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158264977] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:16:34,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:16:34,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 31, 31] total 80 [2022-12-06 18:16:34,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916274403] [2022-12-06 18:16:34,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:16:34,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-12-06 18:16:34,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:16:34,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-12-06 18:16:34,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=5646, Unknown=29, NotChecked=154, Total=6320 [2022-12-06 18:16:34,784 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 144 [2022-12-06 18:16:34,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 202 transitions, 1184 flow. Second operand has 80 states, 80 states have (on average 59.3125) internal successors, (4745), 80 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:16:34,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:16:34,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 144 [2022-12-06 18:16:34,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:16:50,943 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse12 (* c_~front~0 4)) (.cse8 (* c_~back~0 4))) (let ((.cse5 (< c_~d~0 1)) (.cse6 (= .cse12 .cse8)) (.cse9 (select |c_#valid| |c_ULTIMATE.start_main_~#t3~0#1.base|))) (let ((.cse7 (+ c_~queue~0.offset .cse12)) (.cse1 (let ((.cse11 (forall ((|v_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base_6| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base_6|) 0)) (not (< |v_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base_6| |c_#StackHeapBarrier|)))))) (and (or .cse5 .cse11) (or .cse11 .cse6) (or (not (< |c_ULTIMATE.start_main_~#t2~0#1.base| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |c_ULTIMATE.start_main_~#t2~0#1.base|) 0))) (or (not (= .cse9 0)) (not (< |c_ULTIMATE.start_main_~#t3~0#1.base| |c_#StackHeapBarrier|)))))) (.cse2 (< 1 |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse3 (= (mod c_~v_assert~0 256) 0)) (.cse4 (not (< c_~back~0 c_~n~0))) (.cse0 (not (<= 0 c_~back~0))) (.cse10 (+ |c_#StackHeapBarrier| 1))) (and (= c_~d~0 0) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|) (<= c_~v_assert~0 1) (or (< 0 c_~back~0) .cse0 .cse1) (or .cse2 .cse3 .cse4 .cse0 .cse1) (or .cse2 .cse3 (and .cse5 (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) .cse6 (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) .cse4 .cse0) (<= c_~d~0 0) (<= c_~d~0 c_~W~0) (<= 1 c_~v_assert~0) (or (forall ((v_ArrVal_93 (Array Int Int)) (v_ArrVal_94 (Array Int Int))) (< (+ c_~d~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_93) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_94) c_~queue~0.base) .cse7)) 2)) .cse3 .cse4 (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ c_~queue~0.offset .cse8)) 1)) .cse0) (forall ((v_ArrVal_93 (Array Int Int)) (v_ArrVal_94 (Array Int Int))) (< (+ c_~d~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_93) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_94) c_~queue~0.base) .cse7)) (+ c_~W~0 1))) (= .cse9 1) (or .cse3 (< 1 |c_ULTIMATE.start_create_fresh_int_array_#in~size#1|) .cse4 .cse0 .cse1) (<= .cse10 |c_ULTIMATE.start_main_~#t2~0#1.base|) (or .cse2 (and .cse5 (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base|)) (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) .cse6) .cse3 .cse4 .cse0) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t1~0#1.base|) (<= .cse10 |c_ULTIMATE.start_main_~#t3~0#1.base|))))) is different from false [2022-12-06 18:17:48,304 INFO L130 PetriNetUnfolder]: 14912/30562 cut-off events. [2022-12-06 18:17:48,305 INFO L131 PetriNetUnfolder]: For 47015/47840 co-relation queries the response was YES. [2022-12-06 18:17:48,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92489 conditions, 30562 events. 14912/30562 cut-off events. For 47015/47840 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 308085 event pairs, 496 based on Foata normal form. 284/28932 useless extension candidates. Maximal degree in co-relation 53418. Up to 5084 conditions per place. [2022-12-06 18:17:48,536 INFO L137 encePairwiseOnDemand]: 100/144 looper letters, 1069 selfloop transitions, 432 changer transitions 1875/3423 dead transitions. [2022-12-06 18:17:48,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 3423 transitions, 28208 flow [2022-12-06 18:17:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 296 states. [2022-12-06 18:17:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2022-12-06 18:17:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 19400 transitions. [2022-12-06 18:17:48,577 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45514264264264265 [2022-12-06 18:17:48,579 INFO L294 CegarLoopForPetriNet]: 130 programPoint places, 317 predicate places. [2022-12-06 18:17:48,579 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 3423 transitions, 28208 flow [2022-12-06 18:17:48,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 59.3125) internal successors, (4745), 80 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:17:48,581 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:17:48,581 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:17:48,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 18:17:48,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:17:48,791 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)] === [2022-12-06 18:17:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:17:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash -62986264, now seen corresponding path program 2 times [2022-12-06 18:17:48,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:17:48,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431364499] [2022-12-06 18:17:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:17:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:17:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:17:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:17:48,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:17:48,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431364499] [2022-12-06 18:17:48,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431364499] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:17:48,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769392789] [2022-12-06 18:17:48,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 18:17:48,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:17:48,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:17:48,967 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) [2022-12-06 18:17:48,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 18:17:49,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:17:49,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:17:49,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 18:17:49,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:17:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:17:49,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:17:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:17:49,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769392789] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:17:49,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:17:49,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 7 [2022-12-06 18:17:49,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464910940] [2022-12-06 18:17:49,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:17:49,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 18:17:49,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:17:49,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 18:17:49,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-06 18:17:49,653 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 144 [2022-12-06 18:17:49,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 3423 transitions, 28208 flow. Second operand has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:17:49,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:17:49,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 144 [2022-12-06 18:17:49,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:17:59,019 INFO L130 PetriNetUnfolder]: 25321/52066 cut-off events. [2022-12-06 18:17:59,020 INFO L131 PetriNetUnfolder]: For 116969/117894 co-relation queries the response was YES. [2022-12-06 18:17:59,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165298 conditions, 52066 events. 25321/52066 cut-off events. For 116969/117894 co-relation queries the response was YES. Maximal size of possible extension queue 1944. Compared 558537 event pairs, 1051 based on Foata normal form. 706/49535 useless extension candidates. Maximal degree in co-relation 84589. Up to 10005 conditions per place. [2022-12-06 18:17:59,395 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 653 selfloop transitions, 143 changer transitions 2447/4245 dead transitions. [2022-12-06 18:17:59,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 4245 transitions, 43583 flow [2022-12-06 18:17:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 18:17:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 18:17:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 646 transitions. [2022-12-06 18:17:59,412 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8972222222222223 [2022-12-06 18:17:59,415 INFO L294 CegarLoopForPetriNet]: 130 programPoint places, 321 predicate places. [2022-12-06 18:17:59,415 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 4245 transitions, 43583 flow [2022-12-06 18:17:59,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:17:59,416 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:17:59,416 INFO L213 CegarLoopForPetriNet]: trace histogram [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] [2022-12-06 18:17:59,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 18:17:59,622 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,SelfDestructingSolverStorable5 [2022-12-06 18:17:59,622 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)] === [2022-12-06 18:17:59,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:17:59,623 INFO L85 PathProgramCache]: Analyzing trace with hash 278935730, now seen corresponding path program 3 times [2022-12-06 18:17:59,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:17:59,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256539601] [2022-12-06 18:17:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:17:59,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:17:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:18:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:18:01,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:18:01,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256539601] [2022-12-06 18:18:01,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256539601] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:18:01,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662443757] [2022-12-06 18:18:01,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 18:18:01,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:18:01,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:18:01,423 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) [2022-12-06 18:18:01,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 18:18:01,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-06 18:18:01,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:18:01,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-06 18:18:01,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:18:02,173 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 23 treesize of output 7 [2022-12-06 18:18:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 18:18:02,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:18:02,367 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:18:02,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2022-12-06 18:18:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 18:18:02,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662443757] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:18:02,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:18:02,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17, 14] total 47 [2022-12-06 18:18:02,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529359891] [2022-12-06 18:18:02,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:18:02,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-06 18:18:02,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:18:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-06 18:18:02,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1918, Unknown=0, NotChecked=0, Total=2162 [2022-12-06 18:18:02,960 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 144 [2022-12-06 18:18:02,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 4245 transitions, 43583 flow. Second operand has 47 states, 47 states have (on average 73.63829787234043) internal successors, (3461), 47 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:18:02,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:18:02,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 144 [2022-12-06 18:18:02,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:18:46,474 INFO L130 PetriNetUnfolder]: 42258/89054 cut-off events. [2022-12-06 18:18:46,475 INFO L131 PetriNetUnfolder]: For 226037/231981 co-relation queries the response was YES. [2022-12-06 18:18:46,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353440 conditions, 89054 events. 42258/89054 cut-off events. For 226037/231981 co-relation queries the response was YES. Maximal size of possible extension queue 3527. Compared 1054752 event pairs, 1184 based on Foata normal form. 1411/85433 useless extension candidates. Maximal degree in co-relation 161986. Up to 17322 conditions per place. [2022-12-06 18:18:46,934 INFO L137 encePairwiseOnDemand]: 107/144 looper letters, 3046 selfloop transitions, 595 changer transitions 6191/9886 dead transitions. [2022-12-06 18:18:46,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 9886 transitions, 114639 flow [2022-12-06 18:18:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2022-12-06 18:18:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2022-12-06 18:18:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 14242 transitions. [2022-12-06 18:18:46,949 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5346096096096096 [2022-12-06 18:18:46,949 INFO L294 CegarLoopForPetriNet]: 130 programPoint places, 503 predicate places. [2022-12-06 18:18:46,949 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 9886 transitions, 114639 flow [2022-12-06 18:18:46,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 73.63829787234043) internal successors, (3461), 47 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:18:46,950 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:18:46,951 INFO L213 CegarLoopForPetriNet]: trace histogram [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] [2022-12-06 18:18:46,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-06 18:18:47,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:18:47,157 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)] === [2022-12-06 18:18:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:18:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1199559570, now seen corresponding path program 4 times [2022-12-06 18:18:47,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:18:47,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591687221] [2022-12-06 18:18:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:18:47,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:18:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:18:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:18:48,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:18:48,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591687221] [2022-12-06 18:18:48,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591687221] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:18:48,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909952929] [2022-12-06 18:18:48,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 18:18:48,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:18:48,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:18:48,540 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) [2022-12-06 18:18:48,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 18:18:48,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 18:18:48,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:18:48,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-06 18:18:48,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:18:49,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 18:18:49,641 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 18 treesize of output 20 [2022-12-06 18:18:49,703 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 23 treesize of output 7 [2022-12-06 18:18:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:18:49,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:18:50,039 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:18:50,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2022-12-06 18:18:50,049 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 13 treesize of output 7 [2022-12-06 18:18:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:18:51,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909952929] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:18:51,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:18:51,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30, 30] total 77 [2022-12-06 18:18:51,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410225850] [2022-12-06 18:18:51,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:18:51,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-12-06 18:18:51,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:18:51,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-12-06 18:18:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=5402, Unknown=17, NotChecked=0, Total=5852 [2022-12-06 18:18:51,646 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 144 [2022-12-06 18:18:51,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 9886 transitions, 114639 flow. Second operand has 77 states, 77 states have (on average 46.103896103896105) internal successors, (3550), 77 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:18:51,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:18:51,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 144 [2022-12-06 18:18:51,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:21:55,166 INFO L130 PetriNetUnfolder]: 63253/132847 cut-off events. [2022-12-06 18:21:55,166 INFO L131 PetriNetUnfolder]: For 382912/395758 co-relation queries the response was YES. [2022-12-06 18:21:55,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634203 conditions, 132847 events. 63253/132847 cut-off events. For 382912/395758 co-relation queries the response was YES. Maximal size of possible extension queue 4928. Compared 1638028 event pairs, 1619 based on Foata normal form. 2489/127898 useless extension candidates. Maximal degree in co-relation 222740. Up to 27551 conditions per place. [2022-12-06 18:21:55,851 INFO L137 encePairwiseOnDemand]: 103/144 looper letters, 4029 selfloop transitions, 675 changer transitions 10448/15187 dead transitions. [2022-12-06 18:21:55,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 820 places, 15187 transitions, 204403 flow [2022-12-06 18:21:55,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-12-06 18:21:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2022-12-06 18:21:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 9527 transitions. [2022-12-06 18:21:55,860 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.35191341607565013 [2022-12-06 18:21:55,862 INFO L294 CegarLoopForPetriNet]: 130 programPoint places, 690 predicate places. [2022-12-06 18:21:55,862 INFO L495 AbstractCegarLoop]: Abstraction has has 820 places, 15187 transitions, 204403 flow [2022-12-06 18:21:55,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 46.103896103896105) internal successors, (3550), 77 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:21:55,863 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:21:55,863 INFO L213 CegarLoopForPetriNet]: trace histogram [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] [2022-12-06 18:21:55,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 18:21:56,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:21:56,069 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)] === [2022-12-06 18:21:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:21:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1316882896, now seen corresponding path program 5 times [2022-12-06 18:21:56,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:21:56,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072665646] [2022-12-06 18:21:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:21:56,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:21:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:21:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:21:57,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:21:57,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072665646] [2022-12-06 18:21:57,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072665646] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:21:57,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850164046] [2022-12-06 18:21:57,775 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 18:21:57,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:21:57,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:21:57,777 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) [2022-12-06 18:21:57,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 18:21:57,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-06 18:21:57,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:21:57,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-06 18:21:57,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:21:58,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 18:21:58,914 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 18 treesize of output 20 [2022-12-06 18:21:59,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 18:21:59,030 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 18 treesize of output 20 [2022-12-06 18:21:59,192 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 23 treesize of output 7 [2022-12-06 18:21:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 18:21:59,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:21:59,795 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:21:59,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 92 [2022-12-06 18:21:59,800 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 76 treesize of output 64 [2022-12-06 18:21:59,806 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 34 treesize of output 28 [2022-12-06 18:22:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 18:22:01,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850164046] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:22:01,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:22:01,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 23] total 69 [2022-12-06 18:22:01,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550054717] [2022-12-06 18:22:01,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:22:01,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-12-06 18:22:01,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:22:01,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-12-06 18:22:01,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=4346, Unknown=24, NotChecked=0, Total=4692 [2022-12-06 18:22:01,124 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2022-12-06 18:22:01,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 820 places, 15187 transitions, 204403 flow. Second operand has 69 states, 69 states have (on average 66.66666666666667) internal successors, (4600), 69 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:22:01,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:22:01,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2022-12-06 18:22:01,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:23:25,421 WARN L233 SmtUtils]: Spent 8.22s on a formula simplification. DAG size of input: 56 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:23:43,153 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 56 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:25:44,713 INFO L130 PetriNetUnfolder]: 70115/147402 cut-off events. [2022-12-06 18:25:44,713 INFO L131 PetriNetUnfolder]: For 525579/543656 co-relation queries the response was YES. [2022-12-06 18:25:45,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813269 conditions, 147402 events. 70115/147402 cut-off events. For 525579/543656 co-relation queries the response was YES. Maximal size of possible extension queue 5472. Compared 1846268 event pairs, 1903 based on Foata normal form. 2397/141581 useless extension candidates. Maximal degree in co-relation 274610. Up to 40755 conditions per place. [2022-12-06 18:25:45,464 INFO L137 encePairwiseOnDemand]: 110/144 looper letters, 4299 selfloop transitions, 574 changer transitions 11798/16967 dead transitions. [2022-12-06 18:25:45,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 974 places, 16967 transitions, 262048 flow [2022-12-06 18:25:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-12-06 18:25:45,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2022-12-06 18:25:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 10917 transitions. [2022-12-06 18:25:45,472 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4891129032258065 [2022-12-06 18:25:45,472 INFO L294 CegarLoopForPetriNet]: 130 programPoint places, 844 predicate places. [2022-12-06 18:25:45,472 INFO L495 AbstractCegarLoop]: Abstraction has has 974 places, 16967 transitions, 262048 flow [2022-12-06 18:25:45,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 66.66666666666667) internal successors, (4600), 69 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:25:45,474 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:25:45,474 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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] [2022-12-06 18:25:45,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 18:25:45,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:25:45,680 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)] === [2022-12-06 18:25:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:25:45,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2084038267, now seen corresponding path program 6 times [2022-12-06 18:25:45,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:25:45,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659624188] [2022-12-06 18:25:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:25:45,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:25:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:25:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-06 18:25:45,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:25:45,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659624188] [2022-12-06 18:25:45,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659624188] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:25:45,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806914182] [2022-12-06 18:25:45,807 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 18:25:45,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:25:45,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:25:45,808 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) [2022-12-06 18:25:45,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 18:25:45,974 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-06 18:25:45,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:25:45,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-06 18:25:45,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:25:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-06 18:25:46,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:25:46,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-06 18:25:46,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806914182] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:25:46,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:25:46,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-12-06 18:25:46,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204022458] [2022-12-06 18:25:46,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:25:46,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-06 18:25:46,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:25:46,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-06 18:25:46,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-12-06 18:25:46,446 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 144 [2022-12-06 18:25:46,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 974 places, 16967 transitions, 262048 flow. Second operand has 20 states, 20 states have (on average 113.65) internal successors, (2273), 20 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:25:46,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:25:46,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 144 [2022-12-06 18:25:46,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:27:34,913 INFO L130 PetriNetUnfolder]: 51134/108779 cut-off events. [2022-12-06 18:27:34,913 INFO L131 PetriNetUnfolder]: For 489241/502981 co-relation queries the response was YES. [2022-12-06 18:27:35,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612890 conditions, 108779 events. 51134/108779 cut-off events. For 489241/502981 co-relation queries the response was YES. Maximal size of possible extension queue 3744. Compared 1306420 event pairs, 1434 based on Foata normal form. 972/103623 useless extension candidates. Maximal degree in co-relation 277385. Up to 27178 conditions per place. [2022-12-06 18:27:35,459 INFO L137 encePairwiseOnDemand]: 133/144 looper letters, 1455 selfloop transitions, 13 changer transitions 9965/13387 dead transitions. [2022-12-06 18:27:35,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 944 places, 13387 transitions, 213619 flow [2022-12-06 18:27:35,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-06 18:27:35,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-06 18:27:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1493 transitions. [2022-12-06 18:27:35,460 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7975427350427351 [2022-12-06 18:27:35,461 INFO L294 CegarLoopForPetriNet]: 130 programPoint places, 814 predicate places. [2022-12-06 18:27:35,461 INFO L495 AbstractCegarLoop]: Abstraction has has 944 places, 13387 transitions, 213619 flow [2022-12-06 18:27:35,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 113.65) internal successors, (2273), 20 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:27:35,462 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:27:35,462 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-06 18:27:35,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-06 18:27:35,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:27:35,665 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)] === [2022-12-06 18:27:35,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:27:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash -979649194, now seen corresponding path program 7 times [2022-12-06 18:27:35,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:27:35,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346067714] [2022-12-06 18:27:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:27:35,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:27:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:27:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:27:37,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:27:37,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346067714] [2022-12-06 18:27:37,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346067714] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:27:37,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465602837] [2022-12-06 18:27:37,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 18:27:37,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:27:37,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:27:37,760 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:27:37,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 18:27:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:27:37,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-06 18:27:37,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:27:39,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:27:39,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 13 [2022-12-06 18:27:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:27:39,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:27:40,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:27:40,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 69 [2022-12-06 18:27:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:27:41,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465602837] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:27:41,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:27:41,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27, 27] total 77 [2022-12-06 18:27:41,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863206026] [2022-12-06 18:27:41,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:27:41,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-12-06 18:27:41,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:27:41,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-12-06 18:27:41,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=5109, Unknown=0, NotChecked=0, Total=5852 [2022-12-06 18:27:41,865 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 144 [2022-12-06 18:27:41,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 944 places, 13387 transitions, 213619 flow. Second operand has 77 states, 77 states have (on average 71.85714285714286) internal successors, (5533), 77 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:27:41,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:27:41,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 144 [2022-12-06 18:27:41,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-06 18:30:17,382 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 18:30:17,382 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 18:30:17,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 536 states. [2022-12-06 18:30:17,515 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-06 18:30:17,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-06 18:30:17,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:17,720 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (77states, 69/144 universal loopers) in iteration 11,while PetriNetUnfolder was constructing finite prefix that currently has 385705 conditions, 61325 events (29750/61324 cut-off events. For 246528/263768 co-relation queries the response was YES. Maximal size of possible extension queue 5496. Compared 742450 event pairs, 1323 based on Foata normal form. 1745/64657 useless extension candidates. Maximal degree in co-relation 201670. Up to 14145 conditions per place.). [2022-12-06 18:30:17,721 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-06 18:30:17,721 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-06 18:30:17,721 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-06 18:30:17,722 INFO L458 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1] [2022-12-06 18:30:17,739 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 18:30:17,739 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 18:30:17,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:30:17 BasicIcfg [2022-12-06 18:30:17,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 18:30:17,757 INFO L158 Benchmark]: Toolchain (without parser) took 832641.71ms. Allocated memory was 203.4MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 179.5MB in the beginning and 874.3MB in the end (delta: -694.8MB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2022-12-06 18:30:17,758 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 203.4MB. Free memory was 179.7MB in the beginning and 179.6MB in the end (delta: 94.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 18:30:17,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.98ms. Allocated memory is still 203.4MB. Free memory was 179.0MB in the beginning and 165.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-06 18:30:17,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.86ms. Allocated memory is still 203.4MB. Free memory was 165.9MB in the beginning and 163.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 18:30:17,758 INFO L158 Benchmark]: Boogie Preprocessor took 41.50ms. Allocated memory is still 203.4MB. Free memory was 163.8MB in the beginning and 162.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 18:30:17,761 INFO L158 Benchmark]: RCFGBuilder took 486.37ms. Allocated memory is still 203.4MB. Free memory was 162.2MB in the beginning and 140.7MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-12-06 18:30:17,761 INFO L158 Benchmark]: TraceAbstraction took 831862.55ms. Allocated memory was 203.4MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 139.7MB in the beginning and 874.3MB in the end (delta: -734.6MB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2022-12-06 18:30:17,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 203.4MB. Free memory was 179.7MB in the beginning and 179.6MB in the end (delta: 94.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.98ms. Allocated memory is still 203.4MB. Free memory was 179.0MB in the beginning and 165.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.86ms. Allocated memory is still 203.4MB. Free memory was 165.9MB in the beginning and 163.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.50ms. Allocated memory is still 203.4MB. Free memory was 163.8MB in the beginning and 162.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 486.37ms. Allocated memory is still 203.4MB. Free memory was 162.2MB in the beginning and 140.7MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 831862.55ms. Allocated memory was 203.4MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 139.7MB in the beginning and 874.3MB in the end (delta: -734.6MB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (77states, 69/144 universal loopers) in iteration 11,while PetriNetUnfolder was constructing finite prefix that currently has 385705 conditions, 61325 events (29750/61324 cut-off events. For 246528/263768 co-relation queries the response was YES. Maximal size of possible extension queue 5496. Compared 742450 event pairs, 1323 based on Foata normal form. 1745/64657 useless extension candidates. Maximal degree in co-relation 201670. Up to 14145 conditions per place.). - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (77states, 69/144 universal loopers) in iteration 11,while PetriNetUnfolder was constructing finite prefix that currently has 385705 conditions, 61325 events (29750/61324 cut-off events. For 246528/263768 co-relation queries the response was YES. Maximal size of possible extension queue 5496. Compared 742450 event pairs, 1323 based on Foata normal form. 1745/64657 useless extension candidates. Maximal degree in co-relation 201670. Up to 14145 conditions per place.). - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (77states, 69/144 universal loopers) in iteration 11,while PetriNetUnfolder was constructing finite prefix that currently has 385705 conditions, 61325 events (29750/61324 cut-off events. For 246528/263768 co-relation queries the response was YES. Maximal size of possible extension queue 5496. Compared 742450 event pairs, 1323 based on Foata normal form. 1745/64657 useless extension candidates. Maximal degree in co-relation 201670. Up to 14145 conditions per place.). - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (77states, 69/144 universal loopers) in iteration 11,while PetriNetUnfolder was constructing finite prefix that currently has 385705 conditions, 61325 events (29750/61324 cut-off events. For 246528/263768 co-relation queries the response was YES. Maximal size of possible extension queue 5496. Compared 742450 event pairs, 1323 based on Foata normal form. 1745/64657 useless extension candidates. Maximal degree in co-relation 201670. Up to 14145 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 161 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: 831.7s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 801.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 162 mSolverCounterUnknown, 31444 SdHoareTripleChecker+Valid, 27.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31444 mSDsluCounter, 14244 SdHoareTripleChecker+Invalid, 24.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 374 IncrementalHoareTripleChecker+Unchecked, 13725 mSDsCounter, 2004 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36515 IncrementalHoareTripleChecker+Invalid, 39055 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2004 mSolverCounterUnsat, 519 mSDtfsCounter, 36515 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3267 GetRequests, 1544 SyntacticMatches, 13 SemanticMatches, 1710 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 271265 ImplicationChecksByTransitivity, 220.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262048occurred in iteration=9, InterpolantAutomatonStates: 868, 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, 0.9s SatisfiabilityAnalysisTime, 26.9s InterpolantComputationTime, 2193 NumberOfCodeBlocks, 2193 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 3055 ConstructedInterpolants, 75 QuantifiedInterpolants, 39031 SizeOfPredicates, 165 NumberOfNonLiveVariables, 2256 ConjunctsInSsa, 250 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 89/255 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown