/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 13:50:20,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 13:50:20,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 13:50:20,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 13:50:20,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 13:50:20,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 13:50:20,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 13:50:20,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 13:50:20,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 13:50:20,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 13:50:20,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 13:50:20,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 13:50:20,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 13:50:20,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 13:50:20,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 13:50:20,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 13:50:20,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 13:50:20,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 13:50:20,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 13:50:20,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 13:50:20,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 13:50:20,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 13:50:20,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 13:50:20,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 13:50:20,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 13:50:20,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 13:50:20,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 13:50:20,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 13:50:20,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 13:50:20,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 13:50:20,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 13:50:20,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 13:50:20,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 13:50:20,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 13:50:20,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 13:50:20,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 13:50:20,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 13:50:20,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 13:50:20,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 13:50:20,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 13:50:20,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 13:50:20,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 13:50:20,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 13:50:20,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 13:50:20,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 13:50:20,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 13:50:20,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 13:50:20,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 13:50:20,234 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 13:50:20,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 13:50:20,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 13:50:20,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 13:50:20,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 13:50:20,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 13:50:20,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 13:50:20,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 13:50:20,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 13:50:20,235 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 13:50:20,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 13:50:20,235 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 13:50:20,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 13:50:20,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 13:50:20,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 13:50:20,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 13:50:20,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 13:50:20,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 13:50:20,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 13:50:20,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 13:50:20,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 13:50:20,236 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 13:50:20,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 13:50:20,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 13:50:20,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 13:50:20,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 13:50:20,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 13:50:20,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 13:50:20,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 13:50:20,483 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 13:50:20,484 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 13:50:20,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-12-12 13:50:21,558 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 13:50:21,676 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 13:50:21,677 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-12-12 13:50:21,681 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c1472537/8188aded55034f928c8053a72140e1ac/FLAG3a255e4de [2022-12-12 13:50:21,696 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c1472537/8188aded55034f928c8053a72140e1ac [2022-12-12 13:50:21,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 13:50:21,699 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 13:50:21,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 13:50:21,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 13:50:21,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 13:50:21,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:21,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c007877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21, skipping insertion in model container [2022-12-12 13:50:21,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:21,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 13:50:21,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 13:50:21,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:50:21,857 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:50:21,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:50:21,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:50:21,872 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/test-context1.wvr.c[2433,2446] [2022-12-12 13:50:21,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 13:50:21,892 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 13:50:21,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:50:21,907 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:50:21,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:50:21,910 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:50:21,920 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/test-context1.wvr.c[2433,2446] [2022-12-12 13:50:21,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 13:50:21,961 INFO L208 MainTranslator]: Completed translation [2022-12-12 13:50:21,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21 WrapperNode [2022-12-12 13:50:21,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 13:50:21,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 13:50:21,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 13:50:21,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 13:50:21,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:21,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:22,001 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 131 [2022-12-12 13:50:22,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 13:50:22,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 13:50:22,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 13:50:22,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 13:50:22,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:22,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:22,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:22,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:22,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:22,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:22,033 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:22,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:22,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 13:50:22,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 13:50:22,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 13:50:22,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 13:50:22,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (1/1) ... [2022-12-12 13:50:22,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 13:50:22,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:22,093 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 13:50:22,111 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 13:50:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 13:50:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 13:50:22,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 13:50:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 13:50:22,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 13:50:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 13:50:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 13:50:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 13:50:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 13:50:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 13:50:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 13:50:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 13:50:22,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 13:50:22,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 13:50:22,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 13:50:22,125 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 13:50:22,209 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 13:50:22,210 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 13:50:22,374 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 13:50:22,434 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 13:50:22,434 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 13:50:22,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:50:22 BoogieIcfgContainer [2022-12-12 13:50:22,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 13:50:22,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 13:50:22,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 13:50:22,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 13:50:22,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 01:50:21" (1/3) ... [2022-12-12 13:50:22,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d51b874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:50:22, skipping insertion in model container [2022-12-12 13:50:22,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:50:21" (2/3) ... [2022-12-12 13:50:22,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d51b874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:50:22, skipping insertion in model container [2022-12-12 13:50:22,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:50:22" (3/3) ... [2022-12-12 13:50:22,441 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-12-12 13:50:22,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 13:50:22,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 13:50:22,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 13:50:22,494 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 13:50:22,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 228 flow [2022-12-12 13:50:22,545 INFO L130 PetriNetUnfolder]: 9/104 cut-off events. [2022-12-12 13:50:22,545 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 13:50:22,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 104 events. 9/104 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-12-12 13:50:22,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 106 transitions, 228 flow [2022-12-12 13:50:22,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 96 transitions, 204 flow [2022-12-12 13:50:22,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 13:50:22,560 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;@100f596a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 13:50:22,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 13:50:22,587 INFO L130 PetriNetUnfolder]: 9/95 cut-off events. [2022-12-12 13:50:22,587 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 13:50:22,587 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:22,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:22,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:22,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:22,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1224862245, now seen corresponding path program 1 times [2022-12-12 13:50:22,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:22,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677384505] [2022-12-12 13:50:22,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:22,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:22,728 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 13:50:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:22,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677384505] [2022-12-12 13:50:22,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677384505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:50:22,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:50:22,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 13:50:22,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100951563] [2022-12-12 13:50:22,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:50:22,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-12 13:50:22,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-12 13:50:22,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-12 13:50:22,757 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 106 [2022-12-12 13:50:22,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 204 flow. Second operand has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 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 13:50:22,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:22,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 106 [2022-12-12 13:50:22,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:22,836 INFO L130 PetriNetUnfolder]: 5/92 cut-off events. [2022-12-12 13:50:22,836 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-12 13:50:22,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 92 events. 5/92 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 8/94 useless extension candidates. Maximal degree in co-relation 71. Up to 9 conditions per place. [2022-12-12 13:50:22,838 INFO L137 encePairwiseOnDemand]: 100/106 looper letters, 6 selfloop transitions, 0 changer transitions 3/90 dead transitions. [2022-12-12 13:50:22,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 204 flow [2022-12-12 13:50:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-12 13:50:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-12 13:50:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2022-12-12 13:50:22,849 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9339622641509434 [2022-12-12 13:50:22,853 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 1 predicate places. [2022-12-12 13:50:22,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 204 flow [2022-12-12 13:50:22,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 194 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-12 13:50:22,858 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 194 flow [2022-12-12 13:50:22,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 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 13:50:22,859 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:22,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:22,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 13:50:22,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:22,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:22,861 INFO L85 PathProgramCache]: Analyzing trace with hash 699401461, now seen corresponding path program 1 times [2022-12-12 13:50:22,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:22,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308698021] [2022-12-12 13:50:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:22,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:23,194 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 13:50:23,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:23,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308698021] [2022-12-12 13:50:23,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308698021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:50:23,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:50:23,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 13:50:23,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198939594] [2022-12-12 13:50:23,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:50:23,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 13:50:23,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:23,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 13:50:23,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 13:50:23,198 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 106 [2022-12-12 13:50:23,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 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 13:50:23,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:23,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 106 [2022-12-12 13:50:23,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:23,305 INFO L130 PetriNetUnfolder]: 7/114 cut-off events. [2022-12-12 13:50:23,305 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-12 13:50:23,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 114 events. 7/114 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 80. Up to 15 conditions per place. [2022-12-12 13:50:23,306 INFO L137 encePairwiseOnDemand]: 98/106 looper letters, 21 selfloop transitions, 2 changer transitions 8/98 dead transitions. [2022-12-12 13:50:23,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 282 flow [2022-12-12 13:50:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 13:50:23,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 13:50:23,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 564 transitions. [2022-12-12 13:50:23,313 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7601078167115903 [2022-12-12 13:50:23,313 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2022-12-12 13:50:23,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 282 flow [2022-12-12 13:50:23,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 244 flow, removed 19 selfloop flow, removed 1 redundant places. [2022-12-12 13:50:23,315 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 244 flow [2022-12-12 13:50:23,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 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 13:50:23,315 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:23,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:23,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 13:50:23,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:23,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:23,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1947526190, now seen corresponding path program 1 times [2022-12-12 13:50:23,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:23,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199128580] [2022-12-12 13:50:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:23,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:50:23,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:23,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199128580] [2022-12-12 13:50:23,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199128580] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:50:23,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:50:23,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 13:50:23,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824902996] [2022-12-12 13:50:23,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:50:23,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 13:50:23,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:23,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 13:50:23,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 13:50:23,449 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 106 [2022-12-12 13:50:23,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 13:50:23,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:23,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 106 [2022-12-12 13:50:23,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:23,503 INFO L130 PetriNetUnfolder]: 8/141 cut-off events. [2022-12-12 13:50:23,503 INFO L131 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2022-12-12 13:50:23,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 141 events. 8/141 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 222 event pairs, 0 based on Foata normal form. 2/135 useless extension candidates. Maximal degree in co-relation 49. Up to 15 conditions per place. [2022-12-12 13:50:23,504 INFO L137 encePairwiseOnDemand]: 103/106 looper letters, 10 selfloop transitions, 2 changer transitions 10/102 dead transitions. [2022-12-12 13:50:23,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 102 transitions, 293 flow [2022-12-12 13:50:23,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 13:50:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 13:50:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2022-12-12 13:50:23,506 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9056603773584906 [2022-12-12 13:50:23,506 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2022-12-12 13:50:23,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 102 transitions, 293 flow [2022-12-12 13:50:23,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 291 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-12 13:50:23,508 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 102 transitions, 291 flow [2022-12-12 13:50:23,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 13:50:23,508 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:23,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:23,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 13:50:23,509 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:23,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:23,509 INFO L85 PathProgramCache]: Analyzing trace with hash 206871739, now seen corresponding path program 1 times [2022-12-12 13:50:23,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:23,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47502855] [2022-12-12 13:50:23,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:23,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:50:23,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:23,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47502855] [2022-12-12 13:50:23,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47502855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:50:23,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:50:23,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 13:50:23,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740639950] [2022-12-12 13:50:23,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:50:23,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 13:50:23,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:23,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 13:50:23,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-12 13:50:23,763 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 106 [2022-12-12 13:50:23,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 102 transitions, 291 flow. Second operand has 8 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 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 13:50:23,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:23,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 106 [2022-12-12 13:50:23,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:23,860 INFO L130 PetriNetUnfolder]: 8/183 cut-off events. [2022-12-12 13:50:23,860 INFO L131 PetriNetUnfolder]: For 80/94 co-relation queries the response was YES. [2022-12-12 13:50:23,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 183 events. 8/183 cut-off events. For 80/94 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 402 event pairs, 0 based on Foata normal form. 9/181 useless extension candidates. Maximal degree in co-relation 107. Up to 15 conditions per place. [2022-12-12 13:50:23,862 INFO L137 encePairwiseOnDemand]: 95/106 looper letters, 21 selfloop transitions, 10 changer transitions 15/111 dead transitions. [2022-12-12 13:50:23,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 111 transitions, 403 flow [2022-12-12 13:50:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 13:50:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 13:50:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 733 transitions. [2022-12-12 13:50:23,864 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7683438155136268 [2022-12-12 13:50:23,864 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 12 predicate places. [2022-12-12 13:50:23,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 111 transitions, 403 flow [2022-12-12 13:50:23,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 111 transitions, 353 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-12-12 13:50:23,867 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 353 flow [2022-12-12 13:50:23,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 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 13:50:23,867 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:23,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:23,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 13:50:23,868 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash 616683577, now seen corresponding path program 1 times [2022-12-12 13:50:23,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:23,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899584327] [2022-12-12 13:50:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:23,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:50:24,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:24,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899584327] [2022-12-12 13:50:24,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899584327] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:24,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461864528] [2022-12-12 13:50:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:24,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:24,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:24,205 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 13:50:24,257 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 13:50:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:24,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-12 13:50:24,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:24,537 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 13:50:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:50:24,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:24,628 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-12 13:50:24,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2022-12-12 13:50:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:50:24,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461864528] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:24,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:24,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 7] total 15 [2022-12-12 13:50:24,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419365311] [2022-12-12 13:50:24,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:24,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 13:50:24,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:24,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 13:50:24,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-12 13:50:24,698 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 106 [2022-12-12 13:50:24,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 111 transitions, 353 flow. Second operand has 15 states, 15 states have (on average 60.666666666666664) internal successors, (910), 15 states have internal predecessors, (910), 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 13:50:24,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:24,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 106 [2022-12-12 13:50:24,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:25,019 INFO L130 PetriNetUnfolder]: 28/285 cut-off events. [2022-12-12 13:50:25,019 INFO L131 PetriNetUnfolder]: For 121/123 co-relation queries the response was YES. [2022-12-12 13:50:25,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 285 events. 28/285 cut-off events. For 121/123 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 974 event pairs, 0 based on Foata normal form. 2/267 useless extension candidates. Maximal degree in co-relation 118. Up to 32 conditions per place. [2022-12-12 13:50:25,021 INFO L137 encePairwiseOnDemand]: 87/106 looper letters, 46 selfloop transitions, 15 changer transitions 30/141 dead transitions. [2022-12-12 13:50:25,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 141 transitions, 658 flow [2022-12-12 13:50:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-12 13:50:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-12 13:50:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1486 transitions. [2022-12-12 13:50:25,024 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5607547169811321 [2022-12-12 13:50:25,024 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 31 predicate places. [2022-12-12 13:50:25,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 141 transitions, 658 flow [2022-12-12 13:50:25,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 141 transitions, 469 flow, removed 72 selfloop flow, removed 14 redundant places. [2022-12-12 13:50:25,026 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 141 transitions, 469 flow [2022-12-12 13:50:25,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 60.666666666666664) internal successors, (910), 15 states have internal predecessors, (910), 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 13:50:25,027 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:25,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:25,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 13:50:25,233 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 13:50:25,233 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:25,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:25,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1012362811, now seen corresponding path program 2 times [2022-12-12 13:50:25,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:25,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406654096] [2022-12-12 13:50:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:25,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:50:25,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:25,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406654096] [2022-12-12 13:50:25,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406654096] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:25,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813450244] [2022-12-12 13:50:25,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 13:50:25,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:25,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:25,615 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 13:50:25,617 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 13:50:25,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 13:50:25,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:50:25,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-12 13:50:25,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:25,928 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 13:50:26,082 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 13:50:26,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 13:50:26,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-12 13:50:26,204 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 13:50:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:50:26,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:26,336 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_91 (Array Int Int)) (v_ArrVal_92 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_91)) (.cse1 (* c_~front~0 4))) (or (not (= (select (select .cse0 c_~queue~0.base) (+ (* c_~size~0 4) c_~queue~0.offset .cse1)) 5)) (= 5 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_92) c_~queue~0.base) (+ c_~queue~0.offset .cse1)))))) is different from false [2022-12-12 13:50:26,359 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_91 (Array Int Int)) (v_ArrVal_92 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_91)) (.cse1 (* c_~front~0 4))) (or (= 5 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_92) |c_ULTIMATE.start_main_#t~ret9#1.base|) (+ .cse1 |c_ULTIMATE.start_main_#t~ret9#1.offset|))) (not (= 5 (select (select .cse0 |c_ULTIMATE.start_main_#t~ret9#1.base|) (+ (* c_~size~0 4) .cse1 |c_ULTIMATE.start_main_#t~ret9#1.offset|))))))) is different from false [2022-12-12 13:50:26,367 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_91 (Array Int Int)) (v_ArrVal_92 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_91)) (.cse1 (* c_~front~0 4))) (or (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_92) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ .cse1 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) 5) (not (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* c_~size~0 4) .cse1 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) 5))))) is different from false [2022-12-12 13:50:26,375 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_91 (Array Int Int)) (v_ArrVal_92 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_91)) (.cse1 (* c_~front~0 4))) (or (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_92) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5) (not (= 5 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~size~0 4) .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))))) is different from false [2022-12-12 13:50:26,406 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:50:26,407 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 60 treesize of output 48 [2022-12-12 13:50:26,414 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:50:26,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 167 [2022-12-12 13:50:26,419 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 130 treesize of output 106 [2022-12-12 13:50:26,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:50:26,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 122 [2022-12-12 13:50:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-12 13:50:26,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813450244] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:26,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:26,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 16] total 37 [2022-12-12 13:50:26,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864632251] [2022-12-12 13:50:26,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:26,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-12 13:50:26,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:26,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-12 13:50:26,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=913, Unknown=6, NotChecked=260, Total=1332 [2022-12-12 13:50:26,597 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2022-12-12 13:50:26,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 141 transitions, 469 flow. Second operand has 37 states, 37 states have (on average 47.270270270270274) internal successors, (1749), 37 states have internal predecessors, (1749), 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 13:50:26,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:26,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2022-12-12 13:50:26,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:28,093 INFO L130 PetriNetUnfolder]: 33/313 cut-off events. [2022-12-12 13:50:28,093 INFO L131 PetriNetUnfolder]: For 61/65 co-relation queries the response was YES. [2022-12-12 13:50:28,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 313 events. 33/313 cut-off events. For 61/65 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1137 event pairs, 0 based on Foata normal form. 5/295 useless extension candidates. Maximal degree in co-relation 72. Up to 36 conditions per place. [2022-12-12 13:50:28,096 INFO L137 encePairwiseOnDemand]: 84/106 looper letters, 58 selfloop transitions, 19 changer transitions 47/163 dead transitions. [2022-12-12 13:50:28,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 163 transitions, 800 flow [2022-12-12 13:50:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 13:50:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 13:50:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1468 transitions. [2022-12-12 13:50:28,101 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.44674376141205113 [2022-12-12 13:50:28,103 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 47 predicate places. [2022-12-12 13:50:28,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 163 transitions, 800 flow [2022-12-12 13:50:28,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 163 transitions, 579 flow, removed 83 selfloop flow, removed 18 redundant places. [2022-12-12 13:50:28,106 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 163 transitions, 579 flow [2022-12-12 13:50:28,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 47.270270270270274) internal successors, (1749), 37 states have internal predecessors, (1749), 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 13:50:28,108 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:28,108 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:50:28,123 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 13:50:28,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 13:50:28,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2118727370, now seen corresponding path program 3 times [2022-12-12 13:50:28,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:28,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951696366] [2022-12-12 13:50:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:28,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 13:50:28,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:28,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951696366] [2022-12-12 13:50:28,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951696366] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:28,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468535349] [2022-12-12 13:50:28,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 13:50:28,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:28,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:28,416 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 13:50:28,417 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 13:50:28,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 13:50:28,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:50:28,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-12 13:50:28,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:28,764 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 15 treesize of output 11 [2022-12-12 13:50:28,940 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 13:50:29,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 13:50:29,041 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 13:50:29,104 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-12 13:50:29,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-12-12 13:50:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 13:50:29,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:29,424 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_119 (Array Int Int)) (v_ArrVal_120 (Array Int Int)) (v_~front~0_64 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_119))) (or (< v_~front~0_64 0) (<= c_~n~0 v_~front~0_64) (not (= 5 (select (select .cse0 c_~queue~0.base) (+ (* c_~size~0 4) c_~queue~0.offset (* c_~front~0 4))))) (= 5 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_120) c_~queue~0.base) (+ c_~queue~0.offset (* v_~front~0_64 4))))))) is different from false [2022-12-12 13:50:29,466 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_119 (Array Int Int)) (v_ArrVal_120 (Array Int Int)) (v_~front~0_64 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_119))) (or (< v_~front~0_64 0) (<= c_~n~0 v_~front~0_64) (not (= 5 (select (select .cse0 |c_ULTIMATE.start_main_#t~ret9#1.base|) (+ (* c_~size~0 4) (* c_~front~0 4) |c_ULTIMATE.start_main_#t~ret9#1.offset|)))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_120) |c_ULTIMATE.start_main_#t~ret9#1.base|) (+ |c_ULTIMATE.start_main_#t~ret9#1.offset| (* v_~front~0_64 4))) 5)))) is different from false [2022-12-12 13:50:29,533 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_119 (Array Int Int)) (v_ArrVal_120 (Array Int Int)) (v_~front~0_64 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_119))) (or (< v_~front~0_64 0) (<= c_~n~0 v_~front~0_64) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_120) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* v_~front~0_64 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5) (not (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~size~0 4) (* c_~front~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5))))) is different from false [2022-12-12 13:50:29,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:50:29,692 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 60 treesize of output 48 [2022-12-12 13:50:29,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:50:29,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 103 [2022-12-12 13:50:29,708 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:50:29,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 61 [2022-12-12 13:50:29,713 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 54 treesize of output 42 [2022-12-12 13:50:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 13:50:30,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468535349] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:30,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:30,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 23, 23] total 43 [2022-12-12 13:50:30,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221918841] [2022-12-12 13:50:30,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:30,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-12 13:50:30,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:30,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-12 13:50:30,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1343, Unknown=10, NotChecked=234, Total=1806 [2022-12-12 13:50:30,179 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 106 [2022-12-12 13:50:30,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 163 transitions, 579 flow. Second operand has 43 states, 43 states have (on average 42.395348837209305) internal successors, (1823), 43 states have internal predecessors, (1823), 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 13:50:30,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:30,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 106 [2022-12-12 13:50:30,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:32,533 INFO L130 PetriNetUnfolder]: 99/875 cut-off events. [2022-12-12 13:50:32,534 INFO L131 PetriNetUnfolder]: For 297/315 co-relation queries the response was YES. [2022-12-12 13:50:32,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 875 events. 99/875 cut-off events. For 297/315 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5870 event pairs, 0 based on Foata normal form. 42/847 useless extension candidates. Maximal degree in co-relation 156. Up to 85 conditions per place. [2022-12-12 13:50:32,537 INFO L137 encePairwiseOnDemand]: 76/106 looper letters, 94 selfloop transitions, 35 changer transitions 185/348 dead transitions. [2022-12-12 13:50:32,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 348 transitions, 2115 flow [2022-12-12 13:50:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-12 13:50:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-12 13:50:32,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2207 transitions. [2022-12-12 13:50:32,541 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4003991291727141 [2022-12-12 13:50:32,542 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 80 predicate places. [2022-12-12 13:50:32,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 348 transitions, 2115 flow [2022-12-12 13:50:32,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 348 transitions, 1970 flow, removed 49 selfloop flow, removed 20 redundant places. [2022-12-12 13:50:32,552 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 348 transitions, 1970 flow [2022-12-12 13:50:32,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 42.395348837209305) internal successors, (1823), 43 states have internal predecessors, (1823), 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 13:50:32,553 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:32,553 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:50:32,569 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 13:50:32,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:32,758 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:32,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:32,759 INFO L85 PathProgramCache]: Analyzing trace with hash 862596679, now seen corresponding path program 4 times [2022-12-12 13:50:32,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:32,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230150907] [2022-12-12 13:50:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:50:33,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:33,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230150907] [2022-12-12 13:50:33,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230150907] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:33,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12391232] [2022-12-12 13:50:33,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 13:50:33,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:33,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:33,256 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 13:50:33,276 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 13:50:33,333 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 13:50:33,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:50:33,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 13:50:33,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:33,524 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 19 treesize of output 7 [2022-12-12 13:50:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:50:33,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:33,586 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-12 13:50:33,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-12-12 13:50:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:50:33,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12391232] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:33,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:33,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 9] total 23 [2022-12-12 13:50:33,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185781676] [2022-12-12 13:50:33,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:33,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-12 13:50:33,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:33,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-12 13:50:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-12-12 13:50:33,671 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 106 [2022-12-12 13:50:33,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 348 transitions, 1970 flow. Second operand has 23 states, 23 states have (on average 60.08695652173913) internal successors, (1382), 23 states have internal predecessors, (1382), 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 13:50:33,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:33,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 106 [2022-12-12 13:50:33,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:34,761 INFO L130 PetriNetUnfolder]: 205/1653 cut-off events. [2022-12-12 13:50:34,762 INFO L131 PetriNetUnfolder]: For 1109/1180 co-relation queries the response was YES. [2022-12-12 13:50:34,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4059 conditions, 1653 events. 205/1653 cut-off events. For 1109/1180 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 14372 event pairs, 0 based on Foata normal form. 61/1577 useless extension candidates. Maximal degree in co-relation 376. Up to 233 conditions per place. [2022-12-12 13:50:34,767 INFO L137 encePairwiseOnDemand]: 87/106 looper letters, 91 selfloop transitions, 36 changer transitions 414/595 dead transitions. [2022-12-12 13:50:34,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 595 transitions, 4812 flow [2022-12-12 13:50:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-12-12 13:50:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-12-12 13:50:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 3404 transitions. [2022-12-12 13:50:34,771 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5633896060906984 [2022-12-12 13:50:34,772 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 116 predicate places. [2022-12-12 13:50:34,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 595 transitions, 4812 flow [2022-12-12 13:50:34,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 595 transitions, 4071 flow, removed 299 selfloop flow, removed 18 redundant places. [2022-12-12 13:50:34,781 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 595 transitions, 4071 flow [2022-12-12 13:50:34,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 60.08695652173913) internal successors, (1382), 23 states have internal predecessors, (1382), 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 13:50:34,781 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:34,782 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:50:34,800 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 13:50:34,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:34,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:34,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash -305189899, now seen corresponding path program 5 times [2022-12-12 13:50:34,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:34,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277969609] [2022-12-12 13:50:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:34,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 13:50:35,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:35,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277969609] [2022-12-12 13:50:35,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277969609] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:35,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477789842] [2022-12-12 13:50:35,824 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 13:50:35,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:35,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:35,837 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 13:50:35,839 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 13:50:35,909 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 13:50:35,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:50:35,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-12 13:50:35,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:36,279 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 13 treesize of output 9 [2022-12-12 13:50:36,429 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 13:50:36,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 13:50:36,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-12 13:50:36,629 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 13:50:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:50:36,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:36,814 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_179 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_179)) (.cse1 (* c_~front~0 4))) (or (not (= 5 (select (select .cse0 c_~queue~0.base) (+ (* c_~size~0 4) c_~queue~0.offset .cse1 4)))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_180) c_~queue~0.base) (+ c_~queue~0.offset .cse1 4)) 5)))) is different from false [2022-12-12 13:50:36,916 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_179 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_179)) (.cse1 (* c_~front~0 4))) (or (not (= 5 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~size~0 4) .cse1 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (= 5 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_180) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse1 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) is different from false [2022-12-12 13:50:36,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:50:36,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2022-12-12 13:50:36,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:50:36,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 101 [2022-12-12 13:50:36,954 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 63 treesize of output 49 [2022-12-12 13:50:36,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:50:36,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2022-12-12 13:50:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 6 not checked. [2022-12-12 13:50:37,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477789842] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:37,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:37,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 18] total 44 [2022-12-12 13:50:37,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688773234] [2022-12-12 13:50:37,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:37,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-12 13:50:37,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:37,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-12 13:50:37,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1510, Unknown=25, NotChecked=162, Total=1892 [2022-12-12 13:50:37,157 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 106 [2022-12-12 13:50:37,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 595 transitions, 4071 flow. Second operand has 44 states, 44 states have (on average 40.40909090909091) internal successors, (1778), 44 states have internal predecessors, (1778), 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 13:50:37,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:37,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 106 [2022-12-12 13:50:37,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:38,637 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_~front~0 4))) (and (= (select (select |c_#memory_int| c_~queue~0.base) (+ c_~queue~0.offset .cse0)) 5) (= 5 c_~x~0) (forall ((v_ArrVal_180 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_180) c_~queue~0.base) (+ c_~queue~0.offset .cse0 4)) 5)))) is different from false [2022-12-12 13:50:39,430 WARN L837 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (forall ((v_ArrVal_180 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_180) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)) 5))) is different from false [2022-12-12 13:50:39,514 INFO L130 PetriNetUnfolder]: 299/2323 cut-off events. [2022-12-12 13:50:39,514 INFO L131 PetriNetUnfolder]: For 2073/2217 co-relation queries the response was YES. [2022-12-12 13:50:39,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6104 conditions, 2323 events. 299/2323 cut-off events. For 2073/2217 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 21895 event pairs, 0 based on Foata normal form. 94/2224 useless extension candidates. Maximal degree in co-relation 838. Up to 288 conditions per place. [2022-12-12 13:50:39,521 INFO L137 encePairwiseOnDemand]: 80/106 looper letters, 143 selfloop transitions, 52 changer transitions 594/821 dead transitions. [2022-12-12 13:50:39,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 821 transitions, 7425 flow [2022-12-12 13:50:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-12 13:50:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-12-12 13:50:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 2512 transitions. [2022-12-12 13:50:39,524 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.38222763237979307 [2022-12-12 13:50:39,525 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 159 predicate places. [2022-12-12 13:50:39,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 821 transitions, 7425 flow [2022-12-12 13:50:39,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 821 transitions, 6410 flow, removed 436 selfloop flow, removed 37 redundant places. [2022-12-12 13:50:39,537 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 821 transitions, 6410 flow [2022-12-12 13:50:39,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 40.40909090909091) internal successors, (1778), 44 states have internal predecessors, (1778), 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 13:50:39,538 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:39,538 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:50:39,545 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 13:50:39,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:39,744 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:39,744 INFO L85 PathProgramCache]: Analyzing trace with hash 194768118, now seen corresponding path program 6 times [2022-12-12 13:50:39,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:39,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574425281] [2022-12-12 13:50:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:39,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 13:50:39,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:39,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574425281] [2022-12-12 13:50:39,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574425281] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:39,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441295680] [2022-12-12 13:50:39,832 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 13:50:39,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:39,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:39,853 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 13:50:39,854 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 13:50:39,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 13:50:39,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:50:39,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 13:50:39,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 13:50:40,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 13:50:40,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441295680] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:40,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:40,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-12-12 13:50:40,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235766855] [2022-12-12 13:50:40,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:40,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 13:50:40,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:40,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 13:50:40,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-12 13:50:40,090 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 106 [2022-12-12 13:50:40,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 821 transitions, 6410 flow. Second operand has 6 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 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 13:50:40,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:40,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 106 [2022-12-12 13:50:40,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:40,459 INFO L130 PetriNetUnfolder]: 525/3996 cut-off events. [2022-12-12 13:50:40,459 INFO L131 PetriNetUnfolder]: For 4411/4651 co-relation queries the response was YES. [2022-12-12 13:50:40,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10511 conditions, 3996 events. 525/3996 cut-off events. For 4411/4651 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 43341 event pairs, 0 based on Foata normal form. 140/3807 useless extension candidates. Maximal degree in co-relation 1290. Up to 587 conditions per place. [2022-12-12 13:50:40,476 INFO L137 encePairwiseOnDemand]: 103/106 looper letters, 86 selfloop transitions, 80 changer transitions 738/1042 dead transitions. [2022-12-12 13:50:40,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1042 transitions, 9295 flow [2022-12-12 13:50:40,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 13:50:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 13:50:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 482 transitions. [2022-12-12 13:50:40,477 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.909433962264151 [2022-12-12 13:50:40,478 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 126 predicate places. [2022-12-12 13:50:40,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1042 transitions, 9295 flow [2022-12-12 13:50:40,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1042 transitions, 9143 flow, removed 76 selfloop flow, removed 0 redundant places. [2022-12-12 13:50:40,536 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 1042 transitions, 9143 flow [2022-12-12 13:50:40,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 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 13:50:40,536 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:40,536 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:50:40,543 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 13:50:40,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:40,737 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:40,737 INFO L85 PathProgramCache]: Analyzing trace with hash 491890043, now seen corresponding path program 7 times [2022-12-12 13:50:40,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:40,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558088553] [2022-12-12 13:50:40,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:40,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 13:50:40,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:40,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558088553] [2022-12-12 13:50:40,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558088553] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:40,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201852201] [2022-12-12 13:50:40,972 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 13:50:40,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:40,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:40,974 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:50:41,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 13:50:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:41,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 13:50:41,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 13:50:41,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 13:50:41,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201852201] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:41,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:41,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2022-12-12 13:50:41,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454033454] [2022-12-12 13:50:41,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:41,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-12 13:50:41,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:41,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-12 13:50:41,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1229, Unknown=0, NotChecked=0, Total=1560 [2022-12-12 13:50:41,772 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 106 [2022-12-12 13:50:41,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 1042 transitions, 9143 flow. Second operand has 40 states, 40 states have (on average 78.15) internal successors, (3126), 40 states have internal predecessors, (3126), 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 13:50:41,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:41,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 106 [2022-12-12 13:50:41,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:42,752 INFO L130 PetriNetUnfolder]: 328/2765 cut-off events. [2022-12-12 13:50:42,752 INFO L131 PetriNetUnfolder]: For 4189/4336 co-relation queries the response was YES. [2022-12-12 13:50:42,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7528 conditions, 2765 events. 328/2765 cut-off events. For 4189/4336 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 26367 event pairs, 0 based on Foata normal form. 87/2616 useless extension candidates. Maximal degree in co-relation 1388. Up to 646 conditions per place. [2022-12-12 13:50:42,764 INFO L137 encePairwiseOnDemand]: 92/106 looper letters, 171 selfloop transitions, 25 changer transitions 343/652 dead transitions. [2022-12-12 13:50:42,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 652 transitions, 6073 flow [2022-12-12 13:50:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-12 13:50:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-12 13:50:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2222 transitions. [2022-12-12 13:50:42,776 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7486522911051213 [2022-12-12 13:50:42,776 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 153 predicate places. [2022-12-12 13:50:42,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 652 transitions, 6073 flow [2022-12-12 13:50:42,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 652 transitions, 5085 flow, removed 467 selfloop flow, removed 16 redundant places. [2022-12-12 13:50:42,795 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 652 transitions, 5085 flow [2022-12-12 13:50:42,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 78.15) internal successors, (3126), 40 states have internal predecessors, (3126), 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 13:50:42,796 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:42,796 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:42,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-12 13:50:43,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:43,003 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1837565429, now seen corresponding path program 8 times [2022-12-12 13:50:43,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:43,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776159423] [2022-12-12 13:50:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:50:43,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:43,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776159423] [2022-12-12 13:50:43,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776159423] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:43,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835844313] [2022-12-12 13:50:43,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 13:50:43,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:43,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:43,620 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:50:43,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 13:50:43,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 13:50:43,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:50:43,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-12 13:50:43,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:43,949 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 19 treesize of output 7 [2022-12-12 13:50:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-12 13:50:43,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:44,024 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-12 13:50:44,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-12-12 13:50:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-12 13:50:44,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835844313] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:44,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:44,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 10] total 32 [2022-12-12 13:50:44,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352872764] [2022-12-12 13:50:44,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:44,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 13:50:44,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:44,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 13:50:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-12-12 13:50:44,123 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2022-12-12 13:50:44,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 652 transitions, 5085 flow. Second operand has 32 states, 32 states have (on average 53.96875) internal successors, (1727), 32 states have internal predecessors, (1727), 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 13:50:44,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:44,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2022-12-12 13:50:44,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:47,309 INFO L130 PetriNetUnfolder]: 451/3472 cut-off events. [2022-12-12 13:50:47,309 INFO L131 PetriNetUnfolder]: For 5516/5736 co-relation queries the response was YES. [2022-12-12 13:50:47,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10015 conditions, 3472 events. 451/3472 cut-off events. For 5516/5736 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 34732 event pairs, 0 based on Foata normal form. 127/3309 useless extension candidates. Maximal degree in co-relation 1638. Up to 480 conditions per place. [2022-12-12 13:50:47,323 INFO L137 encePairwiseOnDemand]: 83/106 looper letters, 243 selfloop transitions, 147 changer transitions 665/1096 dead transitions. [2022-12-12 13:50:47,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 1096 transitions, 10652 flow [2022-12-12 13:50:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-12-12 13:50:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2022-12-12 13:50:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 7844 transitions. [2022-12-12 13:50:47,332 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5068493150684932 [2022-12-12 13:50:47,333 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 282 predicate places. [2022-12-12 13:50:47,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 1096 transitions, 10652 flow [2022-12-12 13:50:47,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1096 transitions, 8410 flow, removed 928 selfloop flow, removed 51 redundant places. [2022-12-12 13:50:47,354 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 1096 transitions, 8410 flow [2022-12-12 13:50:47,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 53.96875) internal successors, (1727), 32 states have internal predecessors, (1727), 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 13:50:47,355 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:47,355 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:47,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 13:50:47,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-12 13:50:47,562 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1193693703, now seen corresponding path program 9 times [2022-12-12 13:50:47,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:47,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710283234] [2022-12-12 13:50:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:47,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:50:48,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:48,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710283234] [2022-12-12 13:50:48,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710283234] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:48,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493246391] [2022-12-12 13:50:48,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 13:50:48,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:48,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:48,131 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:50:48,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 13:50:48,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 13:50:48,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:50:48,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-12 13:50:48,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:48,665 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 13:50:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-12 13:50:48,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:48,742 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-12 13:50:48,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-12-12 13:50:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-12 13:50:48,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493246391] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:48,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:48,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 11] total 30 [2022-12-12 13:50:48,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714410884] [2022-12-12 13:50:48,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:48,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-12 13:50:48,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:48,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-12 13:50:48,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-12-12 13:50:48,841 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2022-12-12 13:50:48,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 1096 transitions, 8410 flow. Second operand has 30 states, 30 states have (on average 53.666666666666664) internal successors, (1610), 30 states have internal predecessors, (1610), 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 13:50:48,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:48,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2022-12-12 13:50:48,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:51,492 INFO L130 PetriNetUnfolder]: 502/3805 cut-off events. [2022-12-12 13:50:51,492 INFO L131 PetriNetUnfolder]: For 4672/4817 co-relation queries the response was YES. [2022-12-12 13:50:51,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10535 conditions, 3805 events. 502/3805 cut-off events. For 4672/4817 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 39279 event pairs, 0 based on Foata normal form. 102/3588 useless extension candidates. Maximal degree in co-relation 1705. Up to 413 conditions per place. [2022-12-12 13:50:51,509 INFO L137 encePairwiseOnDemand]: 83/106 looper letters, 278 selfloop transitions, 159 changer transitions 719/1197 dead transitions. [2022-12-12 13:50:51,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1197 transitions, 11443 flow [2022-12-12 13:50:51,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-12-12 13:50:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2022-12-12 13:50:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 7406 transitions. [2022-12-12 13:50:51,515 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5062893081761006 [2022-12-12 13:50:51,515 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 368 predicate places. [2022-12-12 13:50:51,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1197 transitions, 11443 flow [2022-12-12 13:50:51,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 1197 transitions, 9582 flow, removed 754 selfloop flow, removed 81 redundant places. [2022-12-12 13:50:51,539 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1197 transitions, 9582 flow [2022-12-12 13:50:51,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.666666666666664) internal successors, (1610), 30 states have internal predecessors, (1610), 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 13:50:51,540 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:51,540 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:51,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 13:50:51,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-12 13:50:51,745 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:51,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:51,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1143307963, now seen corresponding path program 10 times [2022-12-12 13:50:51,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:51,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212150932] [2022-12-12 13:50:51,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:51,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:50:52,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:52,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212150932] [2022-12-12 13:50:52,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212150932] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:52,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176125772] [2022-12-12 13:50:52,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 13:50:52,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:52,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:52,471 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:50:52,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 13:50:52,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 13:50:52,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:50:52,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-12 13:50:52,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:53,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 13:50:53,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-12 13:50:53,133 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 19 treesize of output 7 [2022-12-12 13:50:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 13:50:53,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:53,230 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_333 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)))) is different from false [2022-12-12 13:50:53,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:50:53,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 37 [2022-12-12 13:50:53,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-12-12 13:50:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-12 13:50:53,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176125772] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:53,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:53,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 18] total 53 [2022-12-12 13:50:53,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085812435] [2022-12-12 13:50:53,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:53,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-12 13:50:53,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-12 13:50:53,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2438, Unknown=1, NotChecked=100, Total=2756 [2022-12-12 13:50:53,493 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 106 [2022-12-12 13:50:53,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1197 transitions, 9582 flow. Second operand has 53 states, 53 states have (on average 41.113207547169814) internal successors, (2179), 53 states have internal predecessors, (2179), 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 13:50:53,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:53,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 106 [2022-12-12 13:50:53,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:56,896 INFO L130 PetriNetUnfolder]: 586/4075 cut-off events. [2022-12-12 13:50:56,896 INFO L131 PetriNetUnfolder]: For 5870/6229 co-relation queries the response was YES. [2022-12-12 13:50:56,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11768 conditions, 4075 events. 586/4075 cut-off events. For 5870/6229 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 42319 event pairs, 0 based on Foata normal form. 182/3917 useless extension candidates. Maximal degree in co-relation 1794. Up to 458 conditions per place. [2022-12-12 13:50:56,913 INFO L137 encePairwiseOnDemand]: 81/106 looper letters, 295 selfloop transitions, 238 changer transitions 729/1294 dead transitions. [2022-12-12 13:50:56,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 1294 transitions, 12909 flow [2022-12-12 13:50:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-12-12 13:50:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2022-12-12 13:50:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 3928 transitions. [2022-12-12 13:50:56,917 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3900695134061569 [2022-12-12 13:50:56,917 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 381 predicate places. [2022-12-12 13:50:56,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 1294 transitions, 12909 flow [2022-12-12 13:50:56,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 1294 transitions, 11481 flow, removed 602 selfloop flow, removed 51 redundant places. [2022-12-12 13:50:56,943 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 1294 transitions, 11481 flow [2022-12-12 13:50:56,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 41.113207547169814) internal successors, (2179), 53 states have internal predecessors, (2179), 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 13:50:56,944 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:56,944 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:56,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 13:50:57,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-12 13:50:57,148 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:57,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash 104474738, now seen corresponding path program 11 times [2022-12-12 13:50:57,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:57,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372362892] [2022-12-12 13:50:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:57,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-12 13:50:57,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:57,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372362892] [2022-12-12 13:50:57,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372362892] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:57,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115912283] [2022-12-12 13:50:57,226 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 13:50:57,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:57,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:57,248 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:50:57,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 13:50:57,340 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-12 13:50:57,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:50:57,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 13:50:57,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-12 13:50:57,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-12 13:50:57,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115912283] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:57,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:57,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-12-12 13:50:57,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581457662] [2022-12-12 13:50:57,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:57,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 13:50:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:57,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 13:50:57,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-12 13:50:57,442 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 106 [2022-12-12 13:50:57,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 1294 transitions, 11481 flow. Second operand has 7 states, 7 states have (on average 94.14285714285714) internal successors, (659), 7 states have internal predecessors, (659), 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 13:50:57,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:57,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 106 [2022-12-12 13:50:57,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:50:58,136 INFO L130 PetriNetUnfolder]: 963/6644 cut-off events. [2022-12-12 13:50:58,137 INFO L131 PetriNetUnfolder]: For 11931/12401 co-relation queries the response was YES. [2022-12-12 13:50:58,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18910 conditions, 6644 events. 963/6644 cut-off events. For 11931/12401 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 77660 event pairs, 0 based on Foata normal form. 227/6319 useless extension candidates. Maximal degree in co-relation 3156. Up to 771 conditions per place. [2022-12-12 13:50:58,161 INFO L137 encePairwiseOnDemand]: 103/106 looper letters, 203 selfloop transitions, 299 changer transitions 878/1633 dead transitions. [2022-12-12 13:50:58,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 1633 transitions, 16013 flow [2022-12-12 13:50:58,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 13:50:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 13:50:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 579 transitions. [2022-12-12 13:50:58,162 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.910377358490566 [2022-12-12 13:50:58,163 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 335 predicate places. [2022-12-12 13:50:58,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 1633 transitions, 16013 flow [2022-12-12 13:50:58,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 1633 transitions, 15533 flow, removed 240 selfloop flow, removed 0 redundant places. [2022-12-12 13:50:58,197 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 1633 transitions, 15533 flow [2022-12-12 13:50:58,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.14285714285714) internal successors, (659), 7 states have internal predecessors, (659), 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 13:50:58,197 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:50:58,197 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:58,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-12 13:50:58,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 13:50:58,402 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:50:58,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:50:58,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2033040175, now seen corresponding path program 12 times [2022-12-12 13:50:58,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:50:58,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271115088] [2022-12-12 13:50:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:50:58,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:50:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:50:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-12 13:50:58,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:50:58,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271115088] [2022-12-12 13:50:58,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271115088] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:50:58,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005360463] [2022-12-12 13:50:58,668 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 13:50:58,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:50:58,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:50:58,669 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:50:58,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 13:50:58,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-12 13:50:58,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:50:58,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-12 13:50:58,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:50:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 13:50:59,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:50:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 25 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 13:50:59,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005360463] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:50:59,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:50:59,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 45 [2022-12-12 13:50:59,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547616856] [2022-12-12 13:50:59,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:50:59,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 13:50:59,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:50:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 13:50:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1652, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 13:50:59,609 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 106 [2022-12-12 13:50:59,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 1633 transitions, 15533 flow. Second operand has 45 states, 45 states have (on average 78.33333333333333) internal successors, (3525), 45 states have internal predecessors, (3525), 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 13:50:59,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:50:59,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 106 [2022-12-12 13:50:59,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:51:01,606 INFO L130 PetriNetUnfolder]: 1323/10077 cut-off events. [2022-12-12 13:51:01,607 INFO L131 PetriNetUnfolder]: For 25509/26535 co-relation queries the response was YES. [2022-12-12 13:51:01,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30569 conditions, 10077 events. 1323/10077 cut-off events. For 25509/26535 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 130087 event pairs, 0 based on Foata normal form. 590/9808 useless extension candidates. Maximal degree in co-relation 3402. Up to 1409 conditions per place. [2022-12-12 13:51:01,637 INFO L137 encePairwiseOnDemand]: 92/106 looper letters, 504 selfloop transitions, 33 changer transitions 1305/2065 dead transitions. [2022-12-12 13:51:01,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 2065 transitions, 23039 flow [2022-12-12 13:51:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 13:51:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 13:51:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3096 transitions. [2022-12-12 13:51:01,640 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7489114658925979 [2022-12-12 13:51:01,640 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 373 predicate places. [2022-12-12 13:51:01,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 2065 transitions, 23039 flow [2022-12-12 13:51:01,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 2065 transitions, 22204 flow, removed 363 selfloop flow, removed 24 redundant places. [2022-12-12 13:51:01,694 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 2065 transitions, 22204 flow [2022-12-12 13:51:01,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 78.33333333333333) internal successors, (3525), 45 states have internal predecessors, (3525), 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 13:51:01,695 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:51:01,695 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:51:01,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 13:51:01,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-12 13:51:01,902 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:51:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:51:01,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1975954977, now seen corresponding path program 13 times [2022-12-12 13:51:01,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:51:01,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112415711] [2022-12-12 13:51:01,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:51:01,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:51:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:51:02,643 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:51:02,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:51:02,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112415711] [2022-12-12 13:51:02,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112415711] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:51:02,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765197875] [2022-12-12 13:51:02,644 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 13:51:02,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:51:02,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:51:02,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:51:02,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 13:51:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:51:02,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-12 13:51:02,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:51:03,198 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 13:51:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 13:51:03,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:51:03,282 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-12 13:51:03,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-12-12 13:51:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-12 13:51:03,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765197875] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:51:03,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:51:03,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 12] total 37 [2022-12-12 13:51:03,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861456851] [2022-12-12 13:51:03,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:51:03,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-12 13:51:03,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:51:03,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-12 13:51:03,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2022-12-12 13:51:03,412 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2022-12-12 13:51:03,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 2065 transitions, 22204 flow. Second operand has 37 states, 37 states have (on average 53.270270270270274) internal successors, (1971), 37 states have internal predecessors, (1971), 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 13:51:03,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:51:03,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2022-12-12 13:51:03,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:51:10,114 INFO L130 PetriNetUnfolder]: 1690/12329 cut-off events. [2022-12-12 13:51:10,114 INFO L131 PetriNetUnfolder]: For 35160/36527 co-relation queries the response was YES. [2022-12-12 13:51:10,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41550 conditions, 12329 events. 1690/12329 cut-off events. For 35160/36527 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 164152 event pairs, 0 based on Foata normal form. 604/11897 useless extension candidates. Maximal degree in co-relation 4566. Up to 1923 conditions per place. [2022-12-12 13:51:10,154 INFO L137 encePairwiseOnDemand]: 83/106 looper letters, 606 selfloop transitions, 456 changer transitions 2199/3302 dead transitions. [2022-12-12 13:51:10,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 3302 transitions, 39843 flow [2022-12-12 13:51:10,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2022-12-12 13:51:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2022-12-12 13:51:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 13477 transitions. [2022-12-12 13:51:10,162 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5085660377358491 [2022-12-12 13:51:10,163 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 598 predicate places. [2022-12-12 13:51:10,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 3302 transitions, 39843 flow [2022-12-12 13:51:10,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 3302 transitions, 34983 flow, removed 1805 selfloop flow, removed 74 redundant places. [2022-12-12 13:51:10,245 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 3302 transitions, 34983 flow [2022-12-12 13:51:10,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 53.270270270270274) internal successors, (1971), 37 states have internal predecessors, (1971), 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 13:51:10,245 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:51:10,246 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:51:10,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-12 13:51:10,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-12 13:51:10,451 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:51:10,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:51:10,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1995077137, now seen corresponding path program 14 times [2022-12-12 13:51:10,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:51:10,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353361997] [2022-12-12 13:51:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:51:10,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:51:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:51:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:51:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:51:11,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353361997] [2022-12-12 13:51:11,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353361997] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:51:11,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260217198] [2022-12-12 13:51:11,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 13:51:11,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:51:11,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:51:11,161 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:51:11,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-12 13:51:11,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 13:51:11,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:51:11,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-12 13:51:11,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:51:11,760 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 19 treesize of output 7 [2022-12-12 13:51:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 13:51:11,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:51:11,866 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-12 13:51:11,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-12-12 13:51:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 13:51:11,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260217198] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:51:11,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:51:11,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 13] total 47 [2022-12-12 13:51:11,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006361318] [2022-12-12 13:51:11,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:51:11,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-12 13:51:11,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:51:11,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-12 13:51:11,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1976, Unknown=0, NotChecked=0, Total=2162 [2022-12-12 13:51:11,996 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2022-12-12 13:51:11,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 3302 transitions, 34983 flow. Second operand has 47 states, 47 states have (on average 53.255319148936174) internal successors, (2503), 47 states have internal predecessors, (2503), 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 13:51:11,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:51:11,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2022-12-12 13:51:11,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:51:18,333 INFO L130 PetriNetUnfolder]: 1761/12816 cut-off events. [2022-12-12 13:51:18,334 INFO L131 PetriNetUnfolder]: For 36519/37858 co-relation queries the response was YES. [2022-12-12 13:51:18,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43926 conditions, 12816 events. 1761/12816 cut-off events. For 36519/37858 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 171957 event pairs, 0 based on Foata normal form. 577/12312 useless extension candidates. Maximal degree in co-relation 4862. Up to 1711 conditions per place. [2022-12-12 13:51:18,370 INFO L137 encePairwiseOnDemand]: 83/106 looper letters, 654 selfloop transitions, 473 changer transitions 2275/3443 dead transitions. [2022-12-12 13:51:18,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 824 places, 3443 transitions, 42945 flow [2022-12-12 13:51:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-12-12 13:51:18,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2022-12-12 13:51:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 11135 transitions. [2022-12-12 13:51:18,378 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5074742502962355 [2022-12-12 13:51:18,378 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 730 predicate places. [2022-12-12 13:51:18,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 824 places, 3443 transitions, 42945 flow [2022-12-12 13:51:18,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 3443 transitions, 38625 flow, removed 1824 selfloop flow, removed 116 redundant places. [2022-12-12 13:51:18,468 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 3443 transitions, 38625 flow [2022-12-12 13:51:18,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 53.255319148936174) internal successors, (2503), 47 states have internal predecessors, (2503), 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 13:51:18,468 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:51:18,468 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:51:18,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-12 13:51:18,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:51:18,674 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:51:18,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:51:18,674 INFO L85 PathProgramCache]: Analyzing trace with hash -845634785, now seen corresponding path program 15 times [2022-12-12 13:51:18,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:51:18,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974890232] [2022-12-12 13:51:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:51:18,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:51:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:51:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:51:19,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:51:19,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974890232] [2022-12-12 13:51:19,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974890232] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:51:19,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743664726] [2022-12-12 13:51:19,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 13:51:19,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:51:19,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:51:19,451 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:51:19,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-12 13:51:19,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-12 13:51:19,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:51:19,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-12 13:51:19,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:51:20,516 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 15 treesize of output 11 [2022-12-12 13:51:20,792 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 13:51:21,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 13:51:21,044 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 23 [2022-12-12 13:51:21,540 INFO L321 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-12-12 13:51:21,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-12-12 13:51:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 27 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:51:21,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:51:28,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:51:28,745 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 60 treesize of output 48 [2022-12-12 13:51:28,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:51:28,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 103 [2022-12-12 13:51:28,778 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 48 [2022-12-12 13:51:28,787 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 13:51:28,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 55 [2022-12-12 13:51:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:51:30,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743664726] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:51:30,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:51:30,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 35, 35] total 87 [2022-12-12 13:51:30,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201490352] [2022-12-12 13:51:30,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:51:30,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-12-12 13:51:30,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:51:30,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-12-12 13:51:30,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=6832, Unknown=9, NotChecked=0, Total=7482 [2022-12-12 13:51:30,537 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 106 [2022-12-12 13:51:30,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 3443 transitions, 38625 flow. Second operand has 87 states, 87 states have (on average 38.3448275862069) internal successors, (3336), 87 states have internal predecessors, (3336), 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 13:51:30,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:51:30,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 106 [2022-12-12 13:51:30,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:52:01,572 WARN L233 SmtUtils]: Spent 30.07s on a formula simplification. DAG size of input: 149 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:52:02,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:52:04,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:52:05,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:52:06,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:52:07,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:52:08,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:52:10,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:52:11,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:52:12,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:52:15,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 13:52:35,881 WARN L233 SmtUtils]: Spent 9.73s on a formula simplification. DAG size of input: 139 DAG size of output: 112 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:52:42,421 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 134 DAG size of output: 105 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:52:56,359 WARN L233 SmtUtils]: Spent 13.82s on a formula simplification. DAG size of input: 129 DAG size of output: 108 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:53:21,391 WARN L233 SmtUtils]: Spent 24.20s on a formula simplification. DAG size of input: 133 DAG size of output: 118 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:53:44,416 WARN L233 SmtUtils]: Spent 22.90s on a formula simplification. DAG size of input: 128 DAG size of output: 101 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:54:03,601 WARN L233 SmtUtils]: Spent 19.06s on a formula simplification. DAG size of input: 123 DAG size of output: 104 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:54:36,950 WARN L233 SmtUtils]: Spent 19.11s on a formula simplification. DAG size of input: 99 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:54:51,406 WARN L233 SmtUtils]: Spent 13.07s on a formula simplification. DAG size of input: 99 DAG size of output: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:55:01,593 WARN L233 SmtUtils]: Spent 9.51s on a formula simplification. DAG size of input: 55 DAG size of output: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:55:20,815 WARN L233 SmtUtils]: Spent 18.18s on a formula simplification. DAG size of input: 99 DAG size of output: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:55:29,155 WARN L233 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 55 DAG size of output: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:55:43,973 WARN L233 SmtUtils]: Spent 14.58s on a formula simplification. DAG size of input: 101 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:56:02,649 WARN L233 SmtUtils]: Spent 16.38s on a formula simplification. DAG size of input: 99 DAG size of output: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:56:18,076 WARN L233 SmtUtils]: Spent 15.33s on a formula simplification. DAG size of input: 103 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:56:43,084 WARN L233 SmtUtils]: Spent 13.62s on a formula simplification. DAG size of input: 105 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:57:02,505 WARN L233 SmtUtils]: Spent 19.23s on a formula simplification. DAG size of input: 101 DAG size of output: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:57:14,784 WARN L233 SmtUtils]: Spent 9.80s on a formula simplification. DAG size of input: 107 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:57:37,709 WARN L233 SmtUtils]: Spent 22.77s on a formula simplification. DAG size of input: 103 DAG size of output: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:57:51,718 WARN L233 SmtUtils]: Spent 11.08s on a formula simplification. DAG size of input: 57 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:58:07,143 WARN L233 SmtUtils]: Spent 13.68s on a formula simplification. DAG size of input: 59 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:58:24,736 WARN L233 SmtUtils]: Spent 14.33s on a formula simplification. DAG size of input: 105 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:58:42,560 WARN L233 SmtUtils]: Spent 17.61s on a formula simplification. DAG size of input: 101 DAG size of output: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:58:56,778 WARN L233 SmtUtils]: Spent 12.83s on a formula simplification. DAG size of input: 107 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:59:23,733 WARN L233 SmtUtils]: Spent 26.40s on a formula simplification. DAG size of input: 103 DAG size of output: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:59:36,392 WARN L233 SmtUtils]: Spent 10.31s on a formula simplification. DAG size of input: 57 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:59:46,071 WARN L233 SmtUtils]: Spent 8.79s on a formula simplification. DAG size of input: 59 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 13:59:59,959 WARN L233 SmtUtils]: Spent 13.01s on a formula simplification. DAG size of input: 111 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:00:26,345 WARN L233 SmtUtils]: Spent 21.94s on a formula simplification. DAG size of input: 101 DAG size of output: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:00:48,032 WARN L233 SmtUtils]: Spent 16.05s on a formula simplification. DAG size of input: 103 DAG size of output: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:01:10,551 WARN L233 SmtUtils]: Spent 13.93s on a formula simplification. DAG size of input: 113 DAG size of output: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:01:24,875 WARN L233 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 109 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:01:32,583 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 56 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:01:43,632 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 111 DAG size of output: 94 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:02:01,450 WARN L233 SmtUtils]: Spent 9.71s on a formula simplification. DAG size of input: 107 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:02:24,530 WARN L233 SmtUtils]: Spent 13.50s on a formula simplification. DAG size of input: 109 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:02:45,158 WARN L233 SmtUtils]: Spent 14.91s on a formula simplification. DAG size of input: 111 DAG size of output: 94 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:03:01,779 WARN L233 SmtUtils]: Spent 14.25s on a formula simplification. DAG size of input: 107 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:03:27,299 WARN L233 SmtUtils]: Spent 16.95s on a formula simplification. DAG size of input: 113 DAG size of output: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:03:46,257 WARN L233 SmtUtils]: Spent 14.30s on a formula simplification. DAG size of input: 115 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:04:06,989 WARN L233 SmtUtils]: Spent 17.12s on a formula simplification. DAG size of input: 117 DAG size of output: 99 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 14:04:18,833 INFO L130 PetriNetUnfolder]: 4643/32199 cut-off events. [2022-12-12 14:04:18,833 INFO L131 PetriNetUnfolder]: For 107013/110545 co-relation queries the response was YES. [2022-12-12 14:04:18,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115933 conditions, 32199 events. 4643/32199 cut-off events. For 107013/110545 co-relation queries the response was YES. Maximal size of possible extension queue 1441. Compared 502423 event pairs, 0 based on Foata normal form. 1613/31112 useless extension candidates. Maximal degree in co-relation 12167. Up to 5543 conditions per place. [2022-12-12 14:04:18,933 INFO L137 encePairwiseOnDemand]: 74/106 looper letters, 1034 selfloop transitions, 171 changer transitions 9254/10490 dead transitions. [2022-12-12 14:04:18,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1210 places, 10490 transitions, 139700 flow [2022-12-12 14:04:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 503 states. [2022-12-12 14:04:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2022-12-12 14:04:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 19910 transitions. [2022-12-12 14:04:18,946 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3734198582092352 [2022-12-12 14:04:18,947 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 1116 predicate places. [2022-12-12 14:04:18,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1210 places, 10490 transitions, 139700 flow [2022-12-12 14:04:19,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1125 places, 10490 transitions, 125618 flow, removed 6727 selfloop flow, removed 85 redundant places. [2022-12-12 14:04:19,333 INFO L495 AbstractCegarLoop]: Abstraction has has 1125 places, 10490 transitions, 125618 flow [2022-12-12 14:04:19,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 38.3448275862069) internal successors, (3336), 87 states have internal predecessors, (3336), 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 14:04:19,419 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:04:19,419 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:04:19,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-12 14:04:19,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:04:19,620 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:04:19,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:04:19,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1698145802, now seen corresponding path program 16 times [2022-12-12 14:04:19,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:04:19,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125427050] [2022-12-12 14:04:19,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:04:19,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:04:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:04:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-12 14:04:19,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:04:19,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125427050] [2022-12-12 14:04:19,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125427050] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:04:19,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190606706] [2022-12-12 14:04:19,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 14:04:19,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:04:19,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:04:19,809 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:04:19,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-12 14:04:19,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 14:04:19,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 14:04:19,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 14:04:19,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:04:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-12 14:04:20,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 14:04:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-12 14:04:20,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190606706] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 14:04:20,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 14:04:20,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-12-12 14:04:20,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925348587] [2022-12-12 14:04:20,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 14:04:20,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 14:04:20,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:04:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 14:04:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-12 14:04:20,148 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 106 [2022-12-12 14:04:20,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1125 places, 10490 transitions, 125618 flow. Second operand has 8 states, 8 states have (on average 94.25) internal successors, (754), 8 states have internal predecessors, (754), 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 14:04:20,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:04:20,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 106 [2022-12-12 14:04:20,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:04:37,267 INFO L130 PetriNetUnfolder]: 7173/50372 cut-off events. [2022-12-12 14:04:37,268 INFO L131 PetriNetUnfolder]: For 153741/156884 co-relation queries the response was YES. [2022-12-12 14:04:37,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173135 conditions, 50372 events. 7173/50372 cut-off events. For 153741/156884 co-relation queries the response was YES. Maximal size of possible extension queue 2263. Compared 845705 event pairs, 0 based on Foata normal form. 1488/47575 useless extension candidates. Maximal degree in co-relation 20171. Up to 6099 conditions per place. [2022-12-12 14:04:37,473 INFO L137 encePairwiseOnDemand]: 103/106 looper letters, 482 selfloop transitions, 795 changer transitions 10867/12646 dead transitions. [2022-12-12 14:04:37,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1131 places, 12646 transitions, 161646 flow [2022-12-12 14:04:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 14:04:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 14:04:37,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 676 transitions. [2022-12-12 14:04:37,475 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9110512129380054 [2022-12-12 14:04:37,475 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, 1037 predicate places. [2022-12-12 14:04:37,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1131 places, 12646 transitions, 161646 flow [2022-12-12 14:04:38,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1130 places, 12646 transitions, 158641 flow, removed 1474 selfloop flow, removed 1 redundant places. [2022-12-12 14:04:38,169 INFO L495 AbstractCegarLoop]: Abstraction has has 1130 places, 12646 transitions, 158641 flow [2022-12-12 14:04:38,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 94.25) internal successors, (754), 8 states have internal predecessors, (754), 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 14:04:38,175 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:04:38,175 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:38,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-12 14:04:38,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:04:38,380 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:04:38,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:04:38,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1726775913, now seen corresponding path program 17 times [2022-12-12 14:04:38,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:04:38,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747699410] [2022-12-12 14:04:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:04:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:04:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:04:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:04:39,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:04:39,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747699410] [2022-12-12 14:04:39,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747699410] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:04:39,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706150553] [2022-12-12 14:04:39,171 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 14:04:39,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:04:39,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:04:39,173 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:04:39,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-12 14:04:39,309 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-12 14:04:39,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 14:04:39,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-12 14:04:39,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:04:39,774 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 19 treesize of output 7 [2022-12-12 14:04:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-12 14:04:39,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 14:04:39,903 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-12 14:04:39,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-12-12 14:04:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-12 14:04:40,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706150553] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 14:04:40,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 14:04:40,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 18, 14] total 48 [2022-12-12 14:04:40,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472083729] [2022-12-12 14:04:40,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 14:04:40,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-12 14:04:40,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:04:40,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-12 14:04:40,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2079, Unknown=0, NotChecked=0, Total=2256 [2022-12-12 14:04:40,096 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2022-12-12 14:04:40,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1130 places, 12646 transitions, 158641 flow. Second operand has 48 states, 48 states have (on average 53.0) internal successors, (2544), 48 states have internal predecessors, (2544), 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 14:04:40,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:04:40,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2022-12-12 14:04:40,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 14:04:48,941 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 14:04:48,942 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 14:04:48,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2022-12-12 14:04:48,948 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 14:04:48,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-12 14:04:49,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:04:49,154 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (48states, 50/106 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 27885 conditions, 8809 events (1128/8808 cut-off events. For 27908/28816 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 130151 event pairs, 0 based on Foata normal form. 363/9115 useless extension candidates. Maximal degree in co-relation 1780. Up to 947 conditions per place.). [2022-12-12 14:04:49,155 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 14:04:49,155 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 14:04:49,156 INFO L445 BasicCegarLoop]: Path program histogram: [17, 1, 1, 1, 1] [2022-12-12 14:04:49,165 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 14:04:49,165 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 14:04:49,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 02:04:49 BasicIcfg [2022-12-12 14:04:49,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 14:04:49,167 INFO L158 Benchmark]: Toolchain (without parser) took 867468.10ms. Allocated memory was 255.9MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 210.2MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 966.5MB. Max. memory is 8.0GB. [2022-12-12 14:04:49,168 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 255.9MB. Free memory was 232.1MB in the beginning and 231.9MB in the end (delta: 169.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:04:49,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.04ms. Allocated memory is still 255.9MB. Free memory was 209.9MB in the beginning and 234.3MB in the end (delta: -24.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 14:04:49,168 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.59ms. Allocated memory is still 255.9MB. Free memory was 234.3MB in the beginning and 232.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:04:49,168 INFO L158 Benchmark]: Boogie Preprocessor took 31.91ms. Allocated memory is still 255.9MB. Free memory was 232.2MB in the beginning and 230.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 14:04:49,168 INFO L158 Benchmark]: RCFGBuilder took 400.82ms. Allocated memory is still 255.9MB. Free memory was 230.6MB in the beginning and 209.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-12-12 14:04:49,168 INFO L158 Benchmark]: TraceAbstraction took 866729.75ms. Allocated memory was 255.9MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 208.1MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 963.3MB. Max. memory is 8.0GB. [2022-12-12 14:04:49,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 255.9MB. Free memory was 232.1MB in the beginning and 231.9MB in the end (delta: 169.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 260.04ms. Allocated memory is still 255.9MB. Free memory was 209.9MB in the beginning and 234.3MB in the end (delta: -24.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.59ms. Allocated memory is still 255.9MB. Free memory was 234.3MB in the beginning and 232.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.91ms. Allocated memory is still 255.9MB. Free memory was 232.2MB in the beginning and 230.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 400.82ms. Allocated memory is still 255.9MB. Free memory was 230.6MB in the beginning and 209.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 866729.75ms. Allocated memory was 255.9MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 208.1MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 963.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (48states, 50/106 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 27885 conditions, 8809 events (1128/8808 cut-off events. For 27908/28816 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 130151 event pairs, 0 based on Foata normal form. 363/9115 useless extension candidates. Maximal degree in co-relation 1780. Up to 947 conditions per place.). - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (48states, 50/106 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 27885 conditions, 8809 events (1128/8808 cut-off events. For 27908/28816 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 130151 event pairs, 0 based on Foata normal form. 363/9115 useless extension candidates. Maximal degree in co-relation 1780. Up to 947 conditions per place.). - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (48states, 50/106 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 27885 conditions, 8809 events (1128/8808 cut-off events. For 27908/28816 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 130151 event pairs, 0 based on Foata normal form. 363/9115 useless extension candidates. Maximal degree in co-relation 1780. Up to 947 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 1.5s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 866.6s, OverallIterations: 21, TraceHistogramMax: 5, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 829.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 mSolverCounterUnknown, 21999 SdHoareTripleChecker+Valid, 47.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21999 mSDsluCounter, 11930 SdHoareTripleChecker+Invalid, 44.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1088 IncrementalHoareTripleChecker+Unchecked, 11254 mSDsCounter, 1636 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33565 IncrementalHoareTripleChecker+Invalid, 36355 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1636 mSolverCounterUnsat, 676 mSDtfsCounter, 33565 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5820 GetRequests, 3496 SyntacticMatches, 38 SemanticMatches, 2286 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 243930 ImplicationChecksByTransitivity, 756.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158641occurred in iteration=20, InterpolantAutomatonStates: 1672, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 36664 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 29.2s InterpolantComputationTime, 4103 NumberOfCodeBlocks, 4062 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 5948 ConstructedInterpolants, 162 QuantifiedInterpolants, 49604 SizeOfPredicates, 251 NumberOfNonLiveVariables, 4939 ConjunctsInSsa, 557 ConjunctsInUnsatCore, 55 InterpolantComputations, 4 PerfectInterpolantSequences, 1154/2784 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