/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 19:04:34,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 19:04:34,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 19:04:34,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 19:04:34,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 19:04:34,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 19:04:34,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 19:04:34,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 19:04:34,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 19:04:34,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 19:04:34,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 19:04:34,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 19:04:34,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 19:04:34,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 19:04:34,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 19:04:34,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 19:04:34,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 19:04:34,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 19:04:34,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 19:04:34,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 19:04:34,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 19:04:34,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 19:04:34,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 19:04:34,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 19:04:34,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 19:04:34,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 19:04:34,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 19:04:34,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 19:04:34,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 19:04:34,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 19:04:34,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 19:04:34,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 19:04:34,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 19:04:34,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 19:04:34,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 19:04:34,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 19:04:34,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 19:04:34,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 19:04:34,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 19:04:34,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 19:04:34,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 19:04:34,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 19:04:34,524 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 19:04:34,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 19:04:34,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 19:04:34,526 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 19:04:34,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 19:04:34,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 19:04:34,527 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 19:04:34,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 19:04:34,527 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 19:04:34,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 19:04:34,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 19:04:34,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 19:04:34,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 19:04:34,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 19:04:34,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 19:04:34,528 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 19:04:34,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 19:04:34,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 19:04:34,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 19:04:34,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 19:04:34,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 19:04:34,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 19:04:34,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 19:04:34,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:04:34,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 19:04:34,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 19:04:34,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 19:04:34,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 19:04:34,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 19:04:34,530 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 19:04:34,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 19:04:34,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 19:04:34,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 19:04:34,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 19:04:34,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 19:04:34,837 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 19:04:34,838 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 19:04:34,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2022-12-05 19:04:35,730 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 19:04:35,913 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 19:04:35,913 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2022-12-05 19:04:35,918 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d907013f0/b3926444733147cbb631c80ef758c5bd/FLAG92b4f87e2 [2022-12-05 19:04:35,929 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d907013f0/b3926444733147cbb631c80ef758c5bd [2022-12-05 19:04:35,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 19:04:35,932 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 19:04:35,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 19:04:35,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 19:04:35,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 19:04:35,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:04:35" (1/1) ... [2022-12-05 19:04:35,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254d74d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:35, skipping insertion in model container [2022-12-05 19:04:35,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:04:35" (1/1) ... [2022-12-05 19:04:35,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 19:04:35,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 19:04:36,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:04:36,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:04:36,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:04:36,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:04:36,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:04:36,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:04:36,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:04:36,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:04:36,066 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/parallel-misc-2-unrolled.wvr.c[2332,2345] [2022-12-05 19:04:36,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:04:36,073 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 19:04:36,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:04:36,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:04:36,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:04:36,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:04:36,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:04:36,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:04:36,087 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:04:36,087 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:04:36,098 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/parallel-misc-2-unrolled.wvr.c[2332,2345] [2022-12-05 19:04:36,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:04:36,108 INFO L208 MainTranslator]: Completed translation [2022-12-05 19:04:36,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36 WrapperNode [2022-12-05 19:04:36,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 19:04:36,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 19:04:36,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 19:04:36,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 19:04:36,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (1/1) ... [2022-12-05 19:04:36,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (1/1) ... [2022-12-05 19:04:36,144 INFO L138 Inliner]: procedures = 20, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2022-12-05 19:04:36,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 19:04:36,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 19:04:36,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 19:04:36,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 19:04:36,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (1/1) ... [2022-12-05 19:04:36,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (1/1) ... [2022-12-05 19:04:36,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (1/1) ... [2022-12-05 19:04:36,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (1/1) ... [2022-12-05 19:04:36,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (1/1) ... [2022-12-05 19:04:36,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (1/1) ... [2022-12-05 19:04:36,179 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (1/1) ... [2022-12-05 19:04:36,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (1/1) ... [2022-12-05 19:04:36,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 19:04:36,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 19:04:36,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 19:04:36,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 19:04:36,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (1/1) ... [2022-12-05 19:04:36,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:04:36,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:04:36,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 19:04:36,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 19:04:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 19:04:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 19:04:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 19:04:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 19:04:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 19:04:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 19:04:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 19:04:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 19:04:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 19:04:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 19:04:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 19:04:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 19:04:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 19:04:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 19:04:36,259 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 19:04:36,375 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 19:04:36,377 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 19:04:36,540 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 19:04:36,558 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 19:04:36,558 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-05 19:04:36,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:04:36 BoogieIcfgContainer [2022-12-05 19:04:36,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 19:04:36,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 19:04:36,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 19:04:36,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 19:04:36,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 07:04:35" (1/3) ... [2022-12-05 19:04:36,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0676a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:04:36, skipping insertion in model container [2022-12-05 19:04:36,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:04:36" (2/3) ... [2022-12-05 19:04:36,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0676a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:04:36, skipping insertion in model container [2022-12-05 19:04:36,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:04:36" (3/3) ... [2022-12-05 19:04:36,569 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2022-12-05 19:04:36,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 19:04:36,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 19:04:36,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 19:04:36,623 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 19:04:36,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 198 flow [2022-12-05 19:04:36,718 INFO L130 PetriNetUnfolder]: 6/89 cut-off events. [2022-12-05 19:04:36,719 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 19:04:36,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-12-05 19:04:36,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 91 transitions, 198 flow [2022-12-05 19:04:36,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 81 transitions, 174 flow [2022-12-05 19:04:36,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 19:04:36,752 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;@9da38e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 19:04:36,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 19:04:36,779 INFO L130 PetriNetUnfolder]: 6/80 cut-off events. [2022-12-05 19:04:36,779 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 19:04:36,779 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:04:36,780 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] [2022-12-05 19:04:36,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:04:36,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:04:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash 501920142, now seen corresponding path program 1 times [2022-12-05 19:04:36,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:04:36,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883955372] [2022-12-05 19:04:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:04:36,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:04:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:04:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:04:37,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:04:37,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883955372] [2022-12-05 19:04:37,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883955372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:04:37,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:04:37,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 19:04:37,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819022567] [2022-12-05 19:04:37,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:04:37,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 19:04:37,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:04:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 19:04:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-05 19:04:37,438 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 91 [2022-12-05 19:04:37,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:37,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:04:37,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 91 [2022-12-05 19:04:37,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:04:37,664 INFO L130 PetriNetUnfolder]: 19/141 cut-off events. [2022-12-05 19:04:37,664 INFO L131 PetriNetUnfolder]: For 30/32 co-relation queries the response was YES. [2022-12-05 19:04:37,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 141 events. 19/141 cut-off events. For 30/32 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 335 event pairs, 2 based on Foata normal form. 16/148 useless extension candidates. Maximal degree in co-relation 103. Up to 35 conditions per place. [2022-12-05 19:04:37,666 INFO L137 encePairwiseOnDemand]: 75/91 looper letters, 15 selfloop transitions, 7 changer transitions 7/86 dead transitions. [2022-12-05 19:04:37,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 251 flow [2022-12-05 19:04:37,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:04:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:04:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 631 transitions. [2022-12-05 19:04:37,682 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7704517704517705 [2022-12-05 19:04:37,683 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 174 flow. Second operand 9 states and 631 transitions. [2022-12-05 19:04:37,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 251 flow [2022-12-05 19:04:37,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 237 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 19:04:37,689 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 187 flow [2022-12-05 19:04:37,690 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=187, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2022-12-05 19:04:37,693 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 7 predicate places. [2022-12-05 19:04:37,693 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 187 flow [2022-12-05 19:04:37,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:37,693 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:04:37,694 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] [2022-12-05 19:04:37,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 19:04:37,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:04:37,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:04:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash 653098455, now seen corresponding path program 1 times [2022-12-05 19:04:37,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:04:37,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261223942] [2022-12-05 19:04:37,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:04:37,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:04:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:04:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:04:38,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:04:38,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261223942] [2022-12-05 19:04:38,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261223942] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:04:38,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219004448] [2022-12-05 19:04:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:04:38,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:04:38,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:04:38,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:04:38,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 19:04:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:04:38,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 19:04:38,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:04:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:04:38,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:04:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:04:38,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219004448] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:04:38,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:04:38,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-12-05 19:04:38,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142828466] [2022-12-05 19:04:38,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:04:38,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-05 19:04:38,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:04:38,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-05 19:04:38,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-12-05 19:04:38,630 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 91 [2022-12-05 19:04:38,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 187 flow. Second operand has 13 states, 13 states have (on average 55.84615384615385) internal successors, (726), 13 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:38,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:04:38,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 91 [2022-12-05 19:04:38,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:04:39,001 INFO L130 PetriNetUnfolder]: 131/439 cut-off events. [2022-12-05 19:04:39,002 INFO L131 PetriNetUnfolder]: For 33/43 co-relation queries the response was YES. [2022-12-05 19:04:39,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 439 events. 131/439 cut-off events. For 33/43 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2144 event pairs, 7 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 788. Up to 111 conditions per place. [2022-12-05 19:04:39,008 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 63 selfloop transitions, 14 changer transitions 1/122 dead transitions. [2022-12-05 19:04:39,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 122 transitions, 454 flow [2022-12-05 19:04:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 19:04:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 19:04:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 600 transitions. [2022-12-05 19:04:39,011 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6593406593406593 [2022-12-05 19:04:39,011 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 187 flow. Second operand 10 states and 600 transitions. [2022-12-05 19:04:39,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 122 transitions, 454 flow [2022-12-05 19:04:39,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 122 transitions, 437 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-05 19:04:39,016 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 254 flow [2022-12-05 19:04:39,016 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=254, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2022-12-05 19:04:39,017 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 10 predicate places. [2022-12-05 19:04:39,017 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 254 flow [2022-12-05 19:04:39,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 55.84615384615385) internal successors, (726), 13 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:39,018 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:04:39,018 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] [2022-12-05 19:04:39,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 19:04:39,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:04:39,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:04:39,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:04:39,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1746853035, now seen corresponding path program 2 times [2022-12-05 19:04:39,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:04:39,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725530117] [2022-12-05 19:04:39,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:04:39,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:04:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:04:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:04:39,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:04:39,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725530117] [2022-12-05 19:04:39,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725530117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:04:39,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:04:39,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:04:39,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293260867] [2022-12-05 19:04:39,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:04:39,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:04:39,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:04:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:04:39,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:04:39,396 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 91 [2022-12-05 19:04:39,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:39,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:04:39,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 91 [2022-12-05 19:04:39,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:04:39,552 INFO L130 PetriNetUnfolder]: 133/429 cut-off events. [2022-12-05 19:04:39,553 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2022-12-05 19:04:39,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 429 events. 133/429 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2072 event pairs, 49 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 549. Up to 169 conditions per place. [2022-12-05 19:04:39,555 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 47 selfloop transitions, 16 changer transitions 4/111 dead transitions. [2022-12-05 19:04:39,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 111 transitions, 501 flow [2022-12-05 19:04:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:04:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:04:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 422 transitions. [2022-12-05 19:04:39,558 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6624803767660911 [2022-12-05 19:04:39,558 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 254 flow. Second operand 7 states and 422 transitions. [2022-12-05 19:04:39,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 111 transitions, 501 flow [2022-12-05 19:04:39,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 111 transitions, 495 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 19:04:39,561 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 349 flow [2022-12-05 19:04:39,561 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2022-12-05 19:04:39,562 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2022-12-05 19:04:39,562 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 349 flow [2022-12-05 19:04:39,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:39,562 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:04:39,562 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] [2022-12-05 19:04:39,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 19:04:39,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:04:39,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:04:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1849742044, now seen corresponding path program 1 times [2022-12-05 19:04:39,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:04:39,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017985256] [2022-12-05 19:04:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:04:39,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:04:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:04:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:04:39,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:04:39,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017985256] [2022-12-05 19:04:39,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017985256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:04:39,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:04:39,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:04:39,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366861995] [2022-12-05 19:04:39,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:04:39,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:04:39,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:04:39,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:04:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:04:39,700 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 91 [2022-12-05 19:04:39,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 349 flow. Second operand has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:39,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:04:39,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 91 [2022-12-05 19:04:39,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:04:39,825 INFO L130 PetriNetUnfolder]: 128/419 cut-off events. [2022-12-05 19:04:39,825 INFO L131 PetriNetUnfolder]: For 528/528 co-relation queries the response was YES. [2022-12-05 19:04:39,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 419 events. 128/419 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2007 event pairs, 54 based on Foata normal form. 2/414 useless extension candidates. Maximal degree in co-relation 599. Up to 203 conditions per place. [2022-12-05 19:04:39,828 INFO L137 encePairwiseOnDemand]: 78/91 looper letters, 51 selfloop transitions, 12 changer transitions 5/112 dead transitions. [2022-12-05 19:04:39,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 112 transitions, 557 flow [2022-12-05 19:04:39,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:04:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:04:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 422 transitions. [2022-12-05 19:04:39,829 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6624803767660911 [2022-12-05 19:04:39,830 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 349 flow. Second operand 7 states and 422 transitions. [2022-12-05 19:04:39,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 112 transitions, 557 flow [2022-12-05 19:04:39,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 549 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-05 19:04:39,837 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 368 flow [2022-12-05 19:04:39,837 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2022-12-05 19:04:39,838 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 22 predicate places. [2022-12-05 19:04:39,839 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 368 flow [2022-12-05 19:04:39,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:39,844 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:04:39,844 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] [2022-12-05 19:04:39,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 19:04:39,844 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:04:39,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:04:39,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1705969878, now seen corresponding path program 2 times [2022-12-05 19:04:39,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:04:39,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338155254] [2022-12-05 19:04:39,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:04:39,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:04:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:04:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:04:40,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:04:40,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338155254] [2022-12-05 19:04:40,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338155254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:04:40,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:04:40,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:04:40,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616693436] [2022-12-05 19:04:40,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:04:40,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:04:40,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:04:40,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:04:40,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:04:40,033 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 91 [2022-12-05 19:04:40,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:40,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:04:40,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 91 [2022-12-05 19:04:40,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:04:40,159 INFO L130 PetriNetUnfolder]: 119/389 cut-off events. [2022-12-05 19:04:40,159 INFO L131 PetriNetUnfolder]: For 672/672 co-relation queries the response was YES. [2022-12-05 19:04:40,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 389 events. 119/389 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1650 event pairs, 49 based on Foata normal form. 6/390 useless extension candidates. Maximal degree in co-relation 900. Up to 147 conditions per place. [2022-12-05 19:04:40,162 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 51 selfloop transitions, 16 changer transitions 0/111 dead transitions. [2022-12-05 19:04:40,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 111 transitions, 610 flow [2022-12-05 19:04:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:04:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:04:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions. [2022-12-05 19:04:40,163 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6546310832025117 [2022-12-05 19:04:40,164 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 368 flow. Second operand 7 states and 417 transitions. [2022-12-05 19:04:40,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 111 transitions, 610 flow [2022-12-05 19:04:40,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 582 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-05 19:04:40,170 INFO L231 Difference]: Finished difference. Result has 109 places, 96 transitions, 446 flow [2022-12-05 19:04:40,170 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=109, PETRI_TRANSITIONS=96} [2022-12-05 19:04:40,171 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 27 predicate places. [2022-12-05 19:04:40,171 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 96 transitions, 446 flow [2022-12-05 19:04:40,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:40,172 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:04:40,172 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] [2022-12-05 19:04:40,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 19:04:40,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:04:40,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:04:40,173 INFO L85 PathProgramCache]: Analyzing trace with hash -785260605, now seen corresponding path program 1 times [2022-12-05 19:04:40,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:04:40,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124003718] [2022-12-05 19:04:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:04:40,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:04:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:04:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:04:40,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:04:40,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124003718] [2022-12-05 19:04:40,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124003718] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:04:40,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137942536] [2022-12-05 19:04:40,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:04:40,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:04:40,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:04:40,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:04:40,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 19:04:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:04:40,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 19:04:40,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:04:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:04:40,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:04:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:04:40,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137942536] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:04:40,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:04:40,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-12-05 19:04:40,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498432314] [2022-12-05 19:04:40,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:04:40,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-05 19:04:40,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:04:40,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-05 19:04:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-05 19:04:40,731 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 91 [2022-12-05 19:04:40,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 96 transitions, 446 flow. Second operand has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:40,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:04:40,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 91 [2022-12-05 19:04:40,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:04:40,864 INFO L130 PetriNetUnfolder]: 51/330 cut-off events. [2022-12-05 19:04:40,864 INFO L131 PetriNetUnfolder]: For 646/666 co-relation queries the response was YES. [2022-12-05 19:04:40,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 330 events. 51/330 cut-off events. For 646/666 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1574 event pairs, 11 based on Foata normal form. 3/326 useless extension candidates. Maximal degree in co-relation 717. Up to 38 conditions per place. [2022-12-05 19:04:40,866 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 15 selfloop transitions, 13 changer transitions 8/110 dead transitions. [2022-12-05 19:04:40,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 110 transitions, 555 flow [2022-12-05 19:04:40,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 19:04:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 19:04:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 695 transitions. [2022-12-05 19:04:40,868 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7637362637362637 [2022-12-05 19:04:40,868 INFO L175 Difference]: Start difference. First operand has 109 places, 96 transitions, 446 flow. Second operand 10 states and 695 transitions. [2022-12-05 19:04:40,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 110 transitions, 555 flow [2022-12-05 19:04:40,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 110 transitions, 540 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-05 19:04:40,872 INFO L231 Difference]: Finished difference. Result has 120 places, 100 transitions, 487 flow [2022-12-05 19:04:40,873 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=487, PETRI_PLACES=120, PETRI_TRANSITIONS=100} [2022-12-05 19:04:40,875 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 38 predicate places. [2022-12-05 19:04:40,875 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 100 transitions, 487 flow [2022-12-05 19:04:40,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:40,876 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:04:40,876 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] [2022-12-05 19:04:40,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-05 19:04:41,083 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 [2022-12-05 19:04:41,084 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:04:41,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:04:41,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1969634579, now seen corresponding path program 2 times [2022-12-05 19:04:41,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:04:41,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116545413] [2022-12-05 19:04:41,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:04:41,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:04:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:04:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:04:41,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:04:41,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116545413] [2022-12-05 19:04:41,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116545413] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:04:41,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10756720] [2022-12-05 19:04:41,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 19:04:41,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:04:41,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:04:41,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:04:41,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 19:04:41,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 19:04:41,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:04:41,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 19:04:41,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:04:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:04:41,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:04:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:04:41,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10756720] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:04:41,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:04:41,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-12-05 19:04:41,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152741470] [2022-12-05 19:04:41,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:04:41,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-05 19:04:41,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:04:41,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-05 19:04:41,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-05 19:04:41,598 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 91 [2022-12-05 19:04:41,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 100 transitions, 487 flow. Second operand has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:41,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:04:41,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 91 [2022-12-05 19:04:41,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:04:41,742 INFO L130 PetriNetUnfolder]: 65/394 cut-off events. [2022-12-05 19:04:41,742 INFO L131 PetriNetUnfolder]: For 930/967 co-relation queries the response was YES. [2022-12-05 19:04:41,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 394 events. 65/394 cut-off events. For 930/967 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2069 event pairs, 9 based on Foata normal form. 6/391 useless extension candidates. Maximal degree in co-relation 1044. Up to 71 conditions per place. [2022-12-05 19:04:41,745 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 22 selfloop transitions, 17 changer transitions 4/117 dead transitions. [2022-12-05 19:04:41,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 117 transitions, 654 flow [2022-12-05 19:04:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 19:04:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 19:04:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 694 transitions. [2022-12-05 19:04:41,746 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7626373626373626 [2022-12-05 19:04:41,746 INFO L175 Difference]: Start difference. First operand has 120 places, 100 transitions, 487 flow. Second operand 10 states and 694 transitions. [2022-12-05 19:04:41,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 117 transitions, 654 flow [2022-12-05 19:04:41,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 117 transitions, 621 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-12-05 19:04:41,750 INFO L231 Difference]: Finished difference. Result has 127 places, 110 transitions, 591 flow [2022-12-05 19:04:41,750 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=591, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2022-12-05 19:04:41,751 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 45 predicate places. [2022-12-05 19:04:41,751 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 591 flow [2022-12-05 19:04:41,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:41,751 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:04:41,752 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] [2022-12-05 19:04:41,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 19:04:41,956 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 [2022-12-05 19:04:41,958 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:04:41,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:04:41,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2033726013, now seen corresponding path program 3 times [2022-12-05 19:04:41,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:04:41,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957019661] [2022-12-05 19:04:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:04:41,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:04:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:04:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:04:42,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:04:42,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957019661] [2022-12-05 19:04:42,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957019661] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:04:42,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581320850] [2022-12-05 19:04:42,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 19:04:42,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:04:42,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:04:42,176 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:04:42,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 19:04:42,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 19:04:42,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:04:42,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 19:04:42,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:04:42,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:04:42,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:04:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:04:42,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581320850] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:04:42,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:04:42,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-05 19:04:42,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493029962] [2022-12-05 19:04:42,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:04:42,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-05 19:04:42,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:04:42,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-05 19:04:42,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-05 19:04:42,444 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 91 [2022-12-05 19:04:42,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 591 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:42,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:04:42,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 91 [2022-12-05 19:04:42,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:04:42,584 INFO L130 PetriNetUnfolder]: 62/394 cut-off events. [2022-12-05 19:04:42,584 INFO L131 PetriNetUnfolder]: For 1066/1104 co-relation queries the response was YES. [2022-12-05 19:04:42,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 394 events. 62/394 cut-off events. For 1066/1104 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2135 event pairs, 7 based on Foata normal form. 11/399 useless extension candidates. Maximal degree in co-relation 1088. Up to 39 conditions per place. [2022-12-05 19:04:42,586 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-12-05 19:04:42,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 114 transitions, 700 flow [2022-12-05 19:04:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 19:04:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 19:04:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 753 transitions. [2022-12-05 19:04:42,588 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7522477522477522 [2022-12-05 19:04:42,588 INFO L175 Difference]: Start difference. First operand has 127 places, 110 transitions, 591 flow. Second operand 11 states and 753 transitions. [2022-12-05 19:04:42,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 114 transitions, 700 flow [2022-12-05 19:04:42,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 114 transitions, 687 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-05 19:04:42,592 INFO L231 Difference]: Finished difference. Result has 128 places, 0 transitions, 0 flow [2022-12-05 19:04:42,592 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=128, PETRI_TRANSITIONS=0} [2022-12-05 19:04:42,592 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 46 predicate places. [2022-12-05 19:04:42,593 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 0 transitions, 0 flow [2022-12-05 19:04:42,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:04:42,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-05 19:04:42,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-05 19:04:42,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-05 19:04:42,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 19:04:42,800 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 [2022-12-05 19:04:42,800 INFO L458 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1] [2022-12-05 19:04:42,803 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 19:04:42,803 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 19:04:42,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 07:04:42 BasicIcfg [2022-12-05 19:04:42,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 19:04:42,814 INFO L158 Benchmark]: Toolchain (without parser) took 6881.78ms. Allocated memory was 255.9MB in the beginning and 393.2MB in the end (delta: 137.4MB). Free memory was 232.1MB in the beginning and 241.3MB in the end (delta: -9.2MB). Peak memory consumption was 129.7MB. Max. memory is 8.0GB. [2022-12-05 19:04:42,814 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory was 232.3MB in the beginning and 232.3MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 19:04:42,818 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.70ms. Allocated memory is still 255.9MB. Free memory was 231.6MB in the beginning and 219.5MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-05 19:04:42,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.95ms. Allocated memory is still 255.9MB. Free memory was 219.5MB in the beginning and 217.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 19:04:42,819 INFO L158 Benchmark]: Boogie Preprocessor took 36.11ms. Allocated memory is still 255.9MB. Free memory was 217.9MB in the beginning and 216.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 19:04:42,819 INFO L158 Benchmark]: RCFGBuilder took 377.99ms. Allocated memory is still 255.9MB. Free memory was 216.4MB in the beginning and 202.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-05 19:04:42,819 INFO L158 Benchmark]: TraceAbstraction took 6252.41ms. Allocated memory was 255.9MB in the beginning and 393.2MB in the end (delta: 137.4MB). Free memory was 201.7MB in the beginning and 241.3MB in the end (delta: -39.7MB). Peak memory consumption was 99.3MB. Max. memory is 8.0GB. [2022-12-05 19:04:42,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory was 232.3MB in the beginning and 232.3MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 176.70ms. Allocated memory is still 255.9MB. Free memory was 231.6MB in the beginning and 219.5MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.95ms. Allocated memory is still 255.9MB. Free memory was 219.5MB in the beginning and 217.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.11ms. Allocated memory is still 255.9MB. Free memory was 217.9MB in the beginning and 216.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 377.99ms. Allocated memory is still 255.9MB. Free memory was 216.4MB in the beginning and 202.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 6252.41ms. Allocated memory was 255.9MB in the beginning and 393.2MB in the end (delta: 137.4MB). Free memory was 201.7MB in the beginning and 241.3MB in the end (delta: -39.7MB). Peak memory consumption was 99.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 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: 6.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 371 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 371 mSDsluCounter, 246 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 137 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1005 IncrementalHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 109 mSDtfsCounter, 1005 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 665 GetRequests, 576 SyntacticMatches, 7 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=591occurred in iteration=7, InterpolantAutomatonStates: 71, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 837 NumberOfCodeBlocks, 837 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1112 ConstructedInterpolants, 0 QuantifiedInterpolants, 6942 SizeOfPredicates, 35 NumberOfNonLiveVariables, 661 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 9/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 19:04:42,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...