/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-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 23:08:32,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 23:08:32,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 23:08:32,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 23:08:32,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 23:08:32,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 23:08:32,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 23:08:32,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 23:08:32,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 23:08:32,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 23:08:32,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 23:08:32,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 23:08:32,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 23:08:32,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 23:08:32,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 23:08:32,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 23:08:32,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 23:08:32,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 23:08:32,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 23:08:32,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 23:08:32,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 23:08:32,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 23:08:32,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 23:08:32,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 23:08:32,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 23:08:32,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 23:08:32,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 23:08:32,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 23:08:32,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 23:08:32,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 23:08:32,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 23:08:32,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 23:08:32,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 23:08:32,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 23:08:32,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 23:08:32,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 23:08:32,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 23:08:32,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 23:08:32,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 23:08:32,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 23:08:32,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 23:08:32,288 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-SemanticLbe.epf [2022-12-12 23:08:32,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 23:08:32,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 23:08:32,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 23:08:32,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 23:08:32,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 23:08:32,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 23:08:32,313 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 23:08:32,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 23:08:32,313 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 23:08:32,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 23:08:32,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 23:08:32,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 23:08:32,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 23:08:32,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 23:08:32,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 23:08:32,314 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 23:08:32,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 23:08:32,315 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 23:08:32,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 23:08:32,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 23:08:32,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 23:08:32,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 23:08:32,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 23:08:32,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 23:08:32,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 23:08:32,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 23:08:32,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 23:08:32,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 23:08:32,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 23:08:32,316 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 23:08:32,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 23:08:32,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 23:08:32,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 23:08:32,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 23:08:32,544 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 23:08:32,544 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 23:08:32,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2022-12-12 23:08:33,561 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 23:08:33,721 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 23:08:33,721 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2022-12-12 23:08:33,731 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0dc83fa/0095f6a5398d4c0689c7ca4551f41af0/FLAG879aa6e98 [2022-12-12 23:08:33,747 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0dc83fa/0095f6a5398d4c0689c7ca4551f41af0 [2022-12-12 23:08:33,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 23:08:33,750 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 23:08:33,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 23:08:33,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 23:08:33,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 23:08:33,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:33,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781ad09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33, skipping insertion in model container [2022-12-12 23:08:33,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:33,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 23:08:33,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 23:08:33,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,895 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,896 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,900 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,900 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,900 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,900 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,901 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,907 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,909 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,918 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c[3018,3031] [2022-12-12 23:08:33,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 23:08:33,938 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 23:08:33,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,953 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,954 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,954 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,954 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,955 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:08:33,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:08:33,973 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c[3018,3031] [2022-12-12 23:08:33,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 23:08:33,985 INFO L208 MainTranslator]: Completed translation [2022-12-12 23:08:33,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33 WrapperNode [2022-12-12 23:08:33,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 23:08:33,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 23:08:33,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 23:08:33,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 23:08:33,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:34,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:34,026 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2022-12-12 23:08:34,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 23:08:34,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 23:08:34,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 23:08:34,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 23:08:34,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:34,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:34,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:34,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:34,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:34,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:34,056 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:34,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:34,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 23:08:34,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 23:08:34,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 23:08:34,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 23:08:34,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (1/1) ... [2022-12-12 23:08:34,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 23:08:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:08:34,086 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) [2022-12-12 23:08:34,120 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 [2022-12-12 23:08:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 23:08:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 23:08:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 23:08:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 23:08:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 23:08:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 23:08:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 23:08:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 23:08:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 23:08:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 23:08:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-12 23:08:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-12 23:08:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 23:08:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 23:08:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 23:08:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 23:08:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 23:08:34,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 23:08:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 23:08:34,147 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 23:08:34,212 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 23:08:34,213 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 23:08:34,466 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 23:08:34,552 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 23:08:34,556 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-12 23:08:34,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:08:34 BoogieIcfgContainer [2022-12-12 23:08:34,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 23:08:34,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 23:08:34,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 23:08:34,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 23:08:34,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 11:08:33" (1/3) ... [2022-12-12 23:08:34,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755a720f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:08:34, skipping insertion in model container [2022-12-12 23:08:34,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:08:33" (2/3) ... [2022-12-12 23:08:34,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755a720f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:08:34, skipping insertion in model container [2022-12-12 23:08:34,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:08:34" (3/3) ... [2022-12-12 23:08:34,564 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2022-12-12 23:08:34,576 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 23:08:34,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 23:08:34,576 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 23:08:34,651 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-12 23:08:34,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 160 transitions, 352 flow [2022-12-12 23:08:34,754 INFO L130 PetriNetUnfolder]: 12/156 cut-off events. [2022-12-12 23:08:34,754 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 23:08:34,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 156 events. 12/156 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-12-12 23:08:34,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 160 transitions, 352 flow [2022-12-12 23:08:34,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 144 transitions, 312 flow [2022-12-12 23:08:34,767 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 23:08:34,781 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 144 transitions, 312 flow [2022-12-12 23:08:34,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 144 transitions, 312 flow [2022-12-12 23:08:34,812 INFO L130 PetriNetUnfolder]: 12/144 cut-off events. [2022-12-12 23:08:34,812 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 23:08:34,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 144 events. 12/144 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 112 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-12-12 23:08:34,815 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 144 transitions, 312 flow [2022-12-12 23:08:34,815 INFO L226 LiptonReduction]: Number of co-enabled transitions 2280 [2022-12-12 23:08:39,586 INFO L241 LiptonReduction]: Total number of compositions: 113 [2022-12-12 23:08:39,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 23:08:39,603 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;@6d76a214, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 23:08:39,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-12 23:08:39,608 INFO L130 PetriNetUnfolder]: 4/30 cut-off events. [2022-12-12 23:08:39,609 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 23:08:39,609 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:08:39,609 INFO L214 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] [2022-12-12 23:08:39,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:08:39,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:08:39,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1695043003, now seen corresponding path program 1 times [2022-12-12 23:08:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:08:39,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315599000] [2022-12-12 23:08:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:08:39,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:08:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:08:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:08:39,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:08:39,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315599000] [2022-12-12 23:08:39,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315599000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:08:39,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:08:39,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 23:08:39,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451773040] [2022-12-12 23:08:39,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:08:39,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 23:08:39,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:08:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 23:08:39,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 23:08:39,975 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 31 [2022-12-12 23:08:39,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2022-12-12 23:08:39,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:08:39,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 31 [2022-12-12 23:08:39,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:08:40,211 INFO L130 PetriNetUnfolder]: 1420/1898 cut-off events. [2022-12-12 23:08:40,211 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-12-12 23:08:40,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1898 events. 1420/1898 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7133 event pairs, 765 based on Foata normal form. 0/1421 useless extension candidates. Maximal degree in co-relation 3498. Up to 1552 conditions per place. [2022-12-12 23:08:40,224 INFO L137 encePairwiseOnDemand]: 27/31 looper letters, 42 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2022-12-12 23:08:40,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 215 flow [2022-12-12 23:08:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 23:08:40,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 23:08:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2022-12-12 23:08:40,236 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2022-12-12 23:08:40,242 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2022-12-12 23:08:40,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 46 transitions, 215 flow [2022-12-12 23:08:40,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 46 transitions, 215 flow [2022-12-12 23:08:40,249 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 215 flow [2022-12-12 23:08:40,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2022-12-12 23:08:40,249 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:08:40,250 INFO L214 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] [2022-12-12 23:08:40,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 23:08:40,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:08:40,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:08:40,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1731643137, now seen corresponding path program 1 times [2022-12-12 23:08:40,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:08:40,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794892126] [2022-12-12 23:08:40,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:08:40,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:08:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:08:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:08:40,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:08:40,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794892126] [2022-12-12 23:08:40,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794892126] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:08:40,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:08:40,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 23:08:40,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778430014] [2022-12-12 23:08:40,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:08:40,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 23:08:40,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:08:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 23:08:40,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 23:08:40,393 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 31 [2022-12-12 23:08:40,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-12-12 23:08:40,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:08:40,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 31 [2022-12-12 23:08:40,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:08:40,601 INFO L130 PetriNetUnfolder]: 1718/2336 cut-off events. [2022-12-12 23:08:40,601 INFO L131 PetriNetUnfolder]: For 556/556 co-relation queries the response was YES. [2022-12-12 23:08:40,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7130 conditions, 2336 events. 1718/2336 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8318 event pairs, 787 based on Foata normal form. 0/1943 useless extension candidates. Maximal degree in co-relation 6270. Up to 1808 conditions per place. [2022-12-12 23:08:40,612 INFO L137 encePairwiseOnDemand]: 27/31 looper letters, 69 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2022-12-12 23:08:40,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 73 transitions, 481 flow [2022-12-12 23:08:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 23:08:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 23:08:40,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2022-12-12 23:08:40,613 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2022-12-12 23:08:40,614 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2022-12-12 23:08:40,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 73 transitions, 481 flow [2022-12-12 23:08:40,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 73 transitions, 481 flow [2022-12-12 23:08:40,622 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 73 transitions, 481 flow [2022-12-12 23:08:40,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-12-12 23:08:40,623 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:08:40,623 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:08:40,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 23:08:40,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:08:40,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:08:40,623 INFO L85 PathProgramCache]: Analyzing trace with hash -632645235, now seen corresponding path program 1 times [2022-12-12 23:08:40,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:08:40,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882694161] [2022-12-12 23:08:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:08:40,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:08:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:08:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:08:40,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:08:40,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882694161] [2022-12-12 23:08:40,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882694161] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:08:40,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:08:40,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 23:08:40,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327622912] [2022-12-12 23:08:40,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:08:40,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 23:08:40,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:08:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 23:08:40,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 23:08:40,685 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 31 [2022-12-12 23:08:40,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 73 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2022-12-12 23:08:40,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:08:40,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 31 [2022-12-12 23:08:40,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:08:40,922 INFO L130 PetriNetUnfolder]: 2138/2902 cut-off events. [2022-12-12 23:08:40,922 INFO L131 PetriNetUnfolder]: For 1830/1830 co-relation queries the response was YES. [2022-12-12 23:08:40,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11581 conditions, 2902 events. 2138/2902 cut-off events. For 1830/1830 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10877 event pairs, 787 based on Foata normal form. 0/2449 useless extension candidates. Maximal degree in co-relation 10240. Up to 2244 conditions per place. [2022-12-12 23:08:40,939 INFO L137 encePairwiseOnDemand]: 27/31 looper letters, 107 selfloop transitions, 9 changer transitions 0/117 dead transitions. [2022-12-12 23:08:40,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 117 transitions, 1001 flow [2022-12-12 23:08:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 23:08:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 23:08:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2022-12-12 23:08:40,941 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2022-12-12 23:08:40,941 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2022-12-12 23:08:40,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 117 transitions, 1001 flow [2022-12-12 23:08:40,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 117 transitions, 1001 flow [2022-12-12 23:08:40,956 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 117 transitions, 1001 flow [2022-12-12 23:08:40,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2022-12-12 23:08:40,956 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:08:40,957 INFO L214 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] [2022-12-12 23:08:40,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 23:08:40,957 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:08:40,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:08:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1239127188, now seen corresponding path program 1 times [2022-12-12 23:08:40,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:08:40,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785026725] [2022-12-12 23:08:40,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:08:40,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:08:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:08:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:08:41,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:08:41,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785026725] [2022-12-12 23:08:41,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785026725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:08:41,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:08:41,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 23:08:41,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175895720] [2022-12-12 23:08:41,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:08:41,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 23:08:41,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:08:41,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 23:08:41,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 23:08:41,024 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 31 [2022-12-12 23:08:41,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 117 transitions, 1001 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-12-12 23:08:41,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:08:41,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 31 [2022-12-12 23:08:41,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:08:41,264 INFO L130 PetriNetUnfolder]: 2138/2903 cut-off events. [2022-12-12 23:08:41,265 INFO L131 PetriNetUnfolder]: For 3554/3554 co-relation queries the response was YES. [2022-12-12 23:08:41,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14315 conditions, 2903 events. 2138/2903 cut-off events. For 3554/3554 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10947 event pairs, 787 based on Foata normal form. 0/2450 useless extension candidates. Maximal degree in co-relation 12660. Up to 2729 conditions per place. [2022-12-12 23:08:41,277 INFO L137 encePairwiseOnDemand]: 28/31 looper letters, 115 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2022-12-12 23:08:41,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 118 transitions, 1243 flow [2022-12-12 23:08:41,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 23:08:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 23:08:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2022-12-12 23:08:41,278 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2022-12-12 23:08:41,279 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2022-12-12 23:08:41,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 118 transitions, 1243 flow [2022-12-12 23:08:41,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 118 transitions, 1243 flow [2022-12-12 23:08:41,288 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 118 transitions, 1243 flow [2022-12-12 23:08:41,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-12-12 23:08:41,288 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:08:41,288 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:08:41,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 23:08:41,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:08:41,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:08:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1940848906, now seen corresponding path program 1 times [2022-12-12 23:08:41,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:08:41,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503212871] [2022-12-12 23:08:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:08:41,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:08:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:08:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:08:41,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:08:41,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503212871] [2022-12-12 23:08:41,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503212871] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:08:41,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936804239] [2022-12-12 23:08:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:08:41,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:08:41,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:08:41,779 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) [2022-12-12 23:08:41,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 23:08:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:08:41,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-12 23:08:41,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:08:42,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:08:42,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 23:08:42,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-12 23:08:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:08:42,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:08:42,402 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_181 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_181) c_~A~0.base) c_~A~0.offset))) (or (<= 2147483647 .cse0) (<= c_~min~0 (+ .cse0 1))))) is different from false [2022-12-12 23:08:46,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-12-12 23:08:46,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-12 23:08:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:08:46,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936804239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:08:46,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:08:46,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 27 [2022-12-12 23:08:46,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357991608] [2022-12-12 23:08:46,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:08:46,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-12 23:08:46,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:08:46,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-12 23:08:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=628, Unknown=6, NotChecked=52, Total=812 [2022-12-12 23:08:46,600 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 31 [2022-12-12 23:08:46,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 118 transitions, 1243 flow. Second operand has 29 states, 29 states have (on average 4.0344827586206895) internal successors, (117), 29 states have internal predecessors, (117), 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) [2022-12-12 23:08:46,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:08:46,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 31 [2022-12-12 23:08:46,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:08:51,717 INFO L130 PetriNetUnfolder]: 20150/27622 cut-off events. [2022-12-12 23:08:51,718 INFO L131 PetriNetUnfolder]: For 49527/49527 co-relation queries the response was YES. [2022-12-12 23:08:51,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162237 conditions, 27622 events. 20150/27622 cut-off events. For 49527/49527 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 155381 event pairs, 517 based on Foata normal form. 13/22156 useless extension candidates. Maximal degree in co-relation 145930. Up to 26063 conditions per place. [2022-12-12 23:08:51,818 INFO L137 encePairwiseOnDemand]: 19/31 looper letters, 655 selfloop transitions, 172 changer transitions 1187/2015 dead transitions. [2022-12-12 23:08:51,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 2015 transitions, 25228 flow [2022-12-12 23:08:51,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-12-12 23:08:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-12-12 23:08:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 856 transitions. [2022-12-12 23:08:51,823 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4844368986983588 [2022-12-12 23:08:51,823 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, 67 predicate places. [2022-12-12 23:08:51,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 2015 transitions, 25228 flow [2022-12-12 23:08:51,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 828 transitions, 10381 flow [2022-12-12 23:08:51,894 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 828 transitions, 10381 flow [2022-12-12 23:08:51,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.0344827586206895) internal successors, (117), 29 states have internal predecessors, (117), 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) [2022-12-12 23:08:51,894 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:08:51,895 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:08:51,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 23:08:52,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:08:52,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:08:52,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:08:52,102 INFO L85 PathProgramCache]: Analyzing trace with hash 402693150, now seen corresponding path program 2 times [2022-12-12 23:08:52,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:08:52,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686696557] [2022-12-12 23:08:52,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:08:52,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:08:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:08:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 23:08:52,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:08:52,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686696557] [2022-12-12 23:08:52,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686696557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:08:52,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:08:52,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 23:08:52,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058438058] [2022-12-12 23:08:52,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:08:52,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 23:08:52,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:08:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 23:08:52,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 23:08:52,386 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 31 [2022-12-12 23:08:52,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 828 transitions, 10381 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-12 23:08:52,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:08:52,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 31 [2022-12-12 23:08:52,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:08:54,487 INFO L130 PetriNetUnfolder]: 13704/19298 cut-off events. [2022-12-12 23:08:54,488 INFO L131 PetriNetUnfolder]: For 50831/50831 co-relation queries the response was YES. [2022-12-12 23:08:54,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130705 conditions, 19298 events. 13704/19298 cut-off events. For 50831/50831 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 109232 event pairs, 51 based on Foata normal form. 11/15202 useless extension candidates. Maximal degree in co-relation 119104. Up to 18133 conditions per place. [2022-12-12 23:08:54,589 INFO L137 encePairwiseOnDemand]: 27/31 looper letters, 710 selfloop transitions, 16 changer transitions 1085/1812 dead transitions. [2022-12-12 23:08:54,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 1812 transitions, 26207 flow [2022-12-12 23:08:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 23:08:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 23:08:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2022-12-12 23:08:54,591 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2022-12-12 23:08:54,591 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, 39 predicate places. [2022-12-12 23:08:54,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 1812 transitions, 26207 flow [2022-12-12 23:08:54,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 727 transitions, 10621 flow [2022-12-12 23:08:54,637 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 727 transitions, 10621 flow [2022-12-12 23:08:54,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-12 23:08:54,638 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:08:54,638 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:08:54,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 23:08:54,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:08:54,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:08:54,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1983837324, now seen corresponding path program 3 times [2022-12-12 23:08:54,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:08:54,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154959695] [2022-12-12 23:08:54,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:08:54,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:08:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:08:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:08:54,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:08:54,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154959695] [2022-12-12 23:08:54,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154959695] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:08:54,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077096747] [2022-12-12 23:08:54,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 23:08:54,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:08:54,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:08:54,949 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) [2022-12-12 23:08:54,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 23:08:55,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 23:08:55,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:08:55,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-12 23:08:55,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:08:55,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:08:55,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 23:08:55,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-12 23:08:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:08:55,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:08:55,517 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_278 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_278) c_~A~0.base) c_~A~0.offset))) (or (< 2147483646 .cse0) (< c_~min~0 (+ 2 .cse0))))) is different from false [2022-12-12 23:08:59,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-12-12 23:08:59,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-12 23:08:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-12-12 23:08:59,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077096747] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:08:59,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:08:59,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 19 [2022-12-12 23:08:59,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24274582] [2022-12-12 23:08:59,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:08:59,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 23:08:59,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:08:59,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 23:08:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=299, Unknown=5, NotChecked=36, Total=420 [2022-12-12 23:08:59,673 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 31 [2022-12-12 23:08:59,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 727 transitions, 10621 flow. Second operand has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 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) [2022-12-12 23:08:59,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:08:59,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 31 [2022-12-12 23:08:59,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:09:03,657 INFO L130 PetriNetUnfolder]: 18262/25425 cut-off events. [2022-12-12 23:09:03,657 INFO L131 PetriNetUnfolder]: For 100012/100012 co-relation queries the response was YES. [2022-12-12 23:09:03,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196745 conditions, 25425 events. 18262/25425 cut-off events. For 100012/100012 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 145719 event pairs, 220 based on Foata normal form. 7/19988 useless extension candidates. Maximal degree in co-relation 175216. Up to 23830 conditions per place. [2022-12-12 23:09:03,755 INFO L137 encePairwiseOnDemand]: 21/31 looper letters, 1411 selfloop transitions, 194 changer transitions 906/2512 dead transitions. [2022-12-12 23:09:03,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 2512 transitions, 41551 flow [2022-12-12 23:09:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 23:09:03,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 23:09:03,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 271 transitions. [2022-12-12 23:09:03,757 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5142314990512334 [2022-12-12 23:09:03,757 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, 45 predicate places. [2022-12-12 23:09:03,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 2512 transitions, 41551 flow [2022-12-12 23:09:03,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 1606 transitions, 26572 flow [2022-12-12 23:09:03,839 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 1606 transitions, 26572 flow [2022-12-12 23:09:03,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 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) [2022-12-12 23:09:03,839 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:09:03,840 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:09:03,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 23:09:04,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-12 23:09:04,045 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:09:04,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:09:04,046 INFO L85 PathProgramCache]: Analyzing trace with hash 216281604, now seen corresponding path program 4 times [2022-12-12 23:09:04,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:09:04,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227344534] [2022-12-12 23:09:04,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:09:04,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:09:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:09:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:09:04,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:09:04,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227344534] [2022-12-12 23:09:04,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227344534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:09:04,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578757381] [2022-12-12 23:09:04,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 23:09:04,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:09:04,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:09:04,420 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) [2022-12-12 23:09:04,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 23:09:04,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 23:09:04,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:09:04,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-12 23:09:04,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:09:04,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:09:04,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 23:09:04,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:09:04,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 23:09:04,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-12 23:09:04,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:09:04,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:09:04,785 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_344 (Array Int Int)) (v_ArrVal_343 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_343) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_344) c_~A~0.base) c_~A~0.offset))) (or (< 2147483646 .cse0) (< c_~min~0 (+ 2 .cse0))))) is different from false [2022-12-12 23:09:04,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 97 [2022-12-12 23:09:04,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 85 [2022-12-12 23:09:04,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2022-12-12 23:09:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-12-12 23:09:04,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578757381] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:09:04,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:09:04,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 22 [2022-12-12 23:09:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154786872] [2022-12-12 23:09:04,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:09:04,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-12 23:09:04,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:09:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-12 23:09:04,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=403, Unknown=9, NotChecked=42, Total=552 [2022-12-12 23:09:04,982 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 31 [2022-12-12 23:09:04,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 1606 transitions, 26572 flow. Second operand has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 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) [2022-12-12 23:09:04,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:09:04,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 31 [2022-12-12 23:09:04,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:09:11,384 INFO L130 PetriNetUnfolder]: 22202/30933 cut-off events. [2022-12-12 23:09:11,384 INFO L131 PetriNetUnfolder]: For 177673/177673 co-relation queries the response was YES. [2022-12-12 23:09:11,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267111 conditions, 30933 events. 22202/30933 cut-off events. For 177673/177673 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 182764 event pairs, 159 based on Foata normal form. 5/24476 useless extension candidates. Maximal degree in co-relation 213042. Up to 28794 conditions per place. [2022-12-12 23:09:11,513 INFO L137 encePairwiseOnDemand]: 22/31 looper letters, 1974 selfloop transitions, 253 changer transitions 860/3088 dead transitions. [2022-12-12 23:09:11,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 3088 transitions, 57388 flow [2022-12-12 23:09:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 23:09:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 23:09:11,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 261 transitions. [2022-12-12 23:09:11,515 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4952561669829222 [2022-12-12 23:09:11,515 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, 53 predicate places. [2022-12-12 23:09:11,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 3088 transitions, 57388 flow [2022-12-12 23:09:11,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 2228 transitions, 41392 flow [2022-12-12 23:09:11,631 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 2228 transitions, 41392 flow [2022-12-12 23:09:11,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 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) [2022-12-12 23:09:11,631 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:09:11,631 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:09:11,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 23:09:11,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:09:11,837 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:09:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:09:11,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1728791996, now seen corresponding path program 5 times [2022-12-12 23:09:11,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:09:11,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776987344] [2022-12-12 23:09:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:09:11,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:09:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:09:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:09:12,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:09:12,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776987344] [2022-12-12 23:09:12,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776987344] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:09:12,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753588849] [2022-12-12 23:09:12,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 23:09:12,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:09:12,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:09:12,052 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) [2022-12-12 23:09:12,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 23:09:12,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 23:09:12,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:09:12,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-12 23:09:12,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:09:12,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-12 23:09:12,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-12 23:09:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:09:12,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:09:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:09:12,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753588849] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 23:09:12,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 23:09:12,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 8] total 18 [2022-12-12 23:09:12,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375123457] [2022-12-12 23:09:12,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:09:12,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 23:09:12,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:09:12,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 23:09:12,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-12-12 23:09:12,407 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 31 [2022-12-12 23:09:12,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 2228 transitions, 41392 flow. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2022-12-12 23:09:12,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:09:12,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 31 [2022-12-12 23:09:12,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:09:22,864 INFO L130 PetriNetUnfolder]: 34208/47814 cut-off events. [2022-12-12 23:09:22,864 INFO L131 PetriNetUnfolder]: For 323718/323718 co-relation queries the response was YES. [2022-12-12 23:09:22,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459122 conditions, 47814 events. 34208/47814 cut-off events. For 323718/323718 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 299868 event pairs, 148 based on Foata normal form. 22/37347 useless extension candidates. Maximal degree in co-relation 364688. Up to 44775 conditions per place. [2022-12-12 23:09:23,113 INFO L137 encePairwiseOnDemand]: 20/31 looper letters, 2939 selfloop transitions, 250 changer transitions 1573/4763 dead transitions. [2022-12-12 23:09:23,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 4763 transitions, 98025 flow [2022-12-12 23:09:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 23:09:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 23:09:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2022-12-12 23:09:23,115 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5219941348973607 [2022-12-12 23:09:23,115 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, 55 predicate places. [2022-12-12 23:09:23,115 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 4763 transitions, 98025 flow [2022-12-12 23:09:23,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 3190 transitions, 65671 flow [2022-12-12 23:09:23,316 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 3190 transitions, 65671 flow [2022-12-12 23:09:23,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2022-12-12 23:09:23,317 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:09:23,317 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:09:23,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 23:09:23,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:09:23,522 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:09:23,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:09:23,522 INFO L85 PathProgramCache]: Analyzing trace with hash -683895082, now seen corresponding path program 6 times [2022-12-12 23:09:23,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:09:23,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486232405] [2022-12-12 23:09:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:09:23,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:09:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:09:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:09:23,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:09:23,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486232405] [2022-12-12 23:09:23,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486232405] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:09:23,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996006829] [2022-12-12 23:09:23,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 23:09:23,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:09:23,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:09:23,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:09:23,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 23:09:24,054 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-12 23:09:24,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:09:24,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-12 23:09:24,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:09:24,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:09:24,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 23:09:24,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:09:24,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 23:09:24,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-12 23:09:24,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:09:24,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-12 23:09:24,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-12 23:09:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:09:24,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:09:26,678 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_477 Int) (v_ArrVal_479 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_~A~0.base))) (let ((.cse1 (select (select (store (store |c_#memory_int| c_~A~0.base (store .cse0 c_~A~0.offset v_ArrVal_477)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_479) c_~A~0.base) c_~A~0.offset))) (or (not (<= (+ (select .cse0 c_~A~0.offset) 1) v_ArrVal_477)) (< c_~min~0 (+ .cse1 2)) (< 2147483646 .cse1))))) (= (mod c_~b1~0 256) 0)) is different from false [2022-12-12 23:09:26,720 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_477 Int) (v_ArrVal_479 (Array Int Int)) (v_ArrVal_476 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_476))) (let ((.cse0 (select .cse2 c_~A~0.base))) (let ((.cse1 (select (select (store (store .cse2 c_~A~0.base (store .cse0 c_~A~0.offset v_ArrVal_477)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_479) c_~A~0.base) c_~A~0.offset))) (or (not (<= (+ (select .cse0 c_~A~0.offset) 1) v_ArrVal_477)) (< 2147483646 .cse1) (< c_~min~0 (+ 2 .cse1))))))) (= (mod c_~b1~0 256) 0)) is different from false [2022-12-12 23:09:29,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 315 treesize of output 279 [2022-12-12 23:09:29,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 203 [2022-12-12 23:09:29,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-12-12 23:09:29,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2022-12-12 23:09:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:09:29,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996006829] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:09:29,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:09:29,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 34 [2022-12-12 23:09:29,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204481693] [2022-12-12 23:09:29,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:09:29,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-12 23:09:29,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:09:29,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-12 23:09:29,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=914, Unknown=35, NotChecked=130, Total=1260 [2022-12-12 23:09:29,788 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 31 [2022-12-12 23:09:29,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 3190 transitions, 65671 flow. Second operand has 36 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 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) [2022-12-12 23:09:29,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:09:29,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 31 [2022-12-12 23:09:29,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:10:00,707 INFO L130 PetriNetUnfolder]: 47871/67204 cut-off events. [2022-12-12 23:10:00,707 INFO L131 PetriNetUnfolder]: For 165481/165481 co-relation queries the response was YES. [2022-12-12 23:10:00,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719529 conditions, 67204 events. 47871/67204 cut-off events. For 165481/165481 co-relation queries the response was YES. Maximal size of possible extension queue 2382. Compared 438438 event pairs, 268 based on Foata normal form. 27/51629 useless extension candidates. Maximal degree in co-relation 568104. Up to 63803 conditions per place. [2022-12-12 23:10:01,057 INFO L137 encePairwiseOnDemand]: 21/31 looper letters, 4211 selfloop transitions, 552 changer transitions 3963/8726 dead transitions. [2022-12-12 23:10:01,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 8726 transitions, 196851 flow [2022-12-12 23:10:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-12 23:10:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-12 23:10:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 576 transitions. [2022-12-12 23:10:01,059 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3953328757721345 [2022-12-12 23:10:01,060 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, 97 predicate places. [2022-12-12 23:10:01,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 8726 transitions, 196851 flow [2022-12-12 23:10:01,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 4763 transitions, 107527 flow [2022-12-12 23:10:01,532 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 4763 transitions, 107527 flow [2022-12-12 23:10:01,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 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) [2022-12-12 23:10:01,534 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:10:01,534 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:10:01,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 23:10:01,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 23:10:01,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:10:01,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:10:01,740 INFO L85 PathProgramCache]: Analyzing trace with hash -543963372, now seen corresponding path program 7 times [2022-12-12 23:10:01,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:10:01,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799206104] [2022-12-12 23:10:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:10:01,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:10:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:10:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:10:02,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:10:02,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799206104] [2022-12-12 23:10:02,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799206104] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:10:02,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394492025] [2022-12-12 23:10:02,216 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 23:10:02,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:10:02,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:10:02,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:10:02,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 23:10:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:10:02,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-12 23:10:02,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:10:02,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-12 23:10:02,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 23:10:02,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:10:02,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 23:10:02,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:10:02,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-12 23:10:02,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:10:02,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-12-12 23:10:02,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-12 23:10:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:10:02,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:10:07,957 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 23:10:07,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 89 [2022-12-12 23:10:07,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20456 treesize of output 19488 [2022-12-12 23:10:08,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18431 treesize of output 17279 [2022-12-12 23:10:08,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17392 treesize of output 16908 [2022-12-12 23:10:08,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17020 treesize of output 15916 [2022-12-12 23:10:09,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15916 treesize of output 15236 Received shutdown request... [2022-12-12 23:23:02,097 WARN L249 SmtUtils]: Removed 1 from assertion stack [2022-12-12 23:23:02,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-12 23:23:02,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 23:23:02,121 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 23:23:02,138 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 23:23:02,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:23:02,307 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-12-12 23:23:02,309 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-12 23:23:02,309 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-12 23:23:02,309 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-12 23:23:02,309 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-12 23:23:02,309 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1] [2022-12-12 23:23:02,312 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 23:23:02,312 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 23:23:02,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 11:23:02 BasicIcfg [2022-12-12 23:23:02,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 23:23:02,314 INFO L158 Benchmark]: Toolchain (without parser) took 868564.50ms. Allocated memory was 220.2MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 195.3MB in the beginning and 430.5MB in the end (delta: -235.2MB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2022-12-12 23:23:02,314 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 220.2MB. Free memory was 196.3MB in the beginning and 196.2MB in the end (delta: 86.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 23:23:02,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.39ms. Allocated memory is still 220.2MB. Free memory was 195.1MB in the beginning and 181.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 23:23:02,315 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.08ms. Allocated memory is still 220.2MB. Free memory was 181.5MB in the beginning and 179.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 23:23:02,315 INFO L158 Benchmark]: Boogie Preprocessor took 31.22ms. Allocated memory is still 220.2MB. Free memory was 179.4MB in the beginning and 177.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 23:23:02,315 INFO L158 Benchmark]: RCFGBuilder took 498.38ms. Allocated memory is still 220.2MB. Free memory was 177.3MB in the beginning and 153.2MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-12-12 23:23:02,315 INFO L158 Benchmark]: TraceAbstraction took 867753.07ms. Allocated memory was 220.2MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 152.1MB in the beginning and 430.5MB in the end (delta: -278.4MB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2022-12-12 23:23:02,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 220.2MB. Free memory was 196.3MB in the beginning and 196.2MB in the end (delta: 86.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.39ms. Allocated memory is still 220.2MB. Free memory was 195.1MB in the beginning and 181.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.08ms. Allocated memory is still 220.2MB. Free memory was 181.5MB in the beginning and 179.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.22ms. Allocated memory is still 220.2MB. Free memory was 179.4MB in the beginning and 177.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 498.38ms. Allocated memory is still 220.2MB. Free memory was 177.3MB in the beginning and 153.2MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 867753.07ms. Allocated memory was 220.2MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 152.1MB in the beginning and 430.5MB in the end (delta: -278.4MB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 145 PlacesBefore, 40 PlacesAfterwards, 144 TransitionsBefore, 31 TransitionsAfterwards, 2280 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 66 TrivialYvCompositions, 39 ConcurrentYvCompositions, 8 ChoiceCompositions, 113 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1331, independent: 1309, independent conditional: 1309, independent unconditional: 0, dependent: 22, dependent conditional: 22, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1331, independent: 1309, independent conditional: 0, independent unconditional: 1309, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1331, independent: 1309, independent conditional: 0, independent unconditional: 1309, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1331, independent: 1309, independent conditional: 0, independent unconditional: 1309, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1267, independent: 1249, independent conditional: 0, independent unconditional: 1249, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1267, independent: 1249, independent conditional: 0, independent unconditional: 1249, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1331, independent: 60, independent conditional: 0, independent unconditional: 60, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 1267, unknown conditional: 0, unknown unconditional: 1267] , Statistics on independence cache: Total cache size (in pairs): 2030, Positive cache size: 2012, Positive conditional cache size: 0, Positive unconditional cache size: 2012, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 188 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 1.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 867.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 61.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2724 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2724 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 750 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 316 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7134 IncrementalHoareTripleChecker+Invalid, 8200 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 316 mSolverCounterUnsat, 8 mSDtfsCounter, 7134 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 548 GetRequests, 231 SyntacticMatches, 52 SemanticMatches, 265 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 5191 ImplicationChecksByTransitivity, 22.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107527occurred in iteration=10, InterpolantAutomatonStates: 169, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 183086 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 17.8s InterpolantComputationTime, 455 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 590 ConstructedInterpolants, 24 QuantifiedInterpolants, 5705 SizeOfPredicates, 75 NumberOfNonLiveVariables, 1450 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 47/70 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown