/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/parallel/ticket-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:22:42,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:22:42,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:22:42,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-06 21:22:42,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-06 21:22:42,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-06 21:22:42,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-06 21:22:42,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-06 21:22:42,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-06 21:22:42,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-06 21:22:42,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-06 21:22:42,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-06 21:22:42,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:22:42,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:22:42,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:22:42,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:22:42,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:22:42,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:22:42,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:22:42,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:22:42,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:22:42,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:22:42,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:22:42,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:22:42,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-06 21:22:42,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-06 21:22:42,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-06 21:22:42,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-06 21:22:42,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-06 21:22:42,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-06 21:22:42,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 21:22:42,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 21:22:42,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 21:22:42,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 21:22:42,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 21:22:42,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 21:22:42,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 21:22:42,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 21:22:42,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:22:42,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:22:42,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:22:42,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:22:42,716 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:22:42,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:22:42,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:22:42,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:22:42,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:22:42,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:22:42,721 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:22:42,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:22:42,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:22:42,723 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:22:42,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:22:42,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:22:42,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:22:42,724 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:22:42,725 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:22:42,725 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:22:42,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:22:42,725 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:22:42,725 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:22:42,726 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:22:42,726 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:22:42,726 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:22:42,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:22:42,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:22:42,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:22:42,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:22:42,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:22:42,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:22:42,728 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:22:42,728 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:22:42,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:22:42,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:22:42,729 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:22:43,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:22:43,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:22:43,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:22:43,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:22:43,170 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:22:43,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/ticket-5.wvr.c [2021-10-06 21:22:43,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70228e507/582102ab6bb04b68b4eaf9ed2c792e7d/FLAG58b6237f7 [2021-10-06 21:22:43,886 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:22:43,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/ticket-5.wvr.c [2021-10-06 21:22:43,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70228e507/582102ab6bb04b68b4eaf9ed2c792e7d/FLAG58b6237f7 [2021-10-06 21:22:44,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70228e507/582102ab6bb04b68b4eaf9ed2c792e7d [2021-10-06 21:22:44,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:22:44,248 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:22:44,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:22:44,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:22:44,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:22:44,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cadfe97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44, skipping insertion in model container [2021-10-06 21:22:44,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:22:44,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:22:44,502 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/ticket-5.wvr.c[3057,3070] [2021-10-06 21:22:44,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:22:44,523 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:22:44,558 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/ticket-5.wvr.c[3057,3070] [2021-10-06 21:22:44,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:22:44,581 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:22:44,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44 WrapperNode [2021-10-06 21:22:44,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:22:44,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:22:44,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:22:44,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:22:44,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:22:44,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:22:44,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:22:44,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:22:44,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:22:44,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:22:44,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:22:44,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:22:44,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (1/1) ... [2021-10-06 21:22:44,713 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:22:44,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:22:44,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 21:22:44,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 21:22:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:22:44,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:22:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:22:44,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:22:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:22:44,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:22:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:22:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-06 21:22:44,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-06 21:22:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-10-06 21:22:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-10-06 21:22:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:22:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:22:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:22:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:22:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:22:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:22:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:22:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:22:44,832 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:22:45,560 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:22:45,561 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-06 21:22:45,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:22:45 BoogieIcfgContainer [2021-10-06 21:22:45,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:22:45,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:22:45,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:22:45,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:22:45,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:22:44" (1/3) ... [2021-10-06 21:22:45,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12157be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:22:45, skipping insertion in model container [2021-10-06 21:22:45,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:22:44" (2/3) ... [2021-10-06 21:22:45,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12157be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:22:45, skipping insertion in model container [2021-10-06 21:22:45,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:22:45" (3/3) ... [2021-10-06 21:22:45,574 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.c [2021-10-06 21:22:45,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:22:45,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-06 21:22:45,580 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:22:45,628 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,628 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,629 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,629 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,629 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,629 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,630 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,630 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,630 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,630 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,631 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,631 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,631 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,631 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,631 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,635 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,635 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,635 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,636 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,636 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,636 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,636 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,637 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,637 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,637 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,637 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,640 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,640 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,640 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,640 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,641 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,641 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,641 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,641 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,642 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,642 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,642 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,642 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,642 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,643 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,643 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,643 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,644 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,644 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,644 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,644 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,644 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,645 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,645 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,645 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,646 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,646 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,646 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,646 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,647 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,647 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,647 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,647 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,647 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,648 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,648 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,648 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,648 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,649 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,649 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,649 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,650 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,650 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,650 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,650 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,650 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,651 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,651 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,651 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,652 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,652 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,652 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,652 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,653 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,653 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,653 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,653 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,654 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,654 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,654 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,654 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,654 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,655 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,655 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,655 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,655 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,656 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,656 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,656 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,656 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,657 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,657 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,657 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,661 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,661 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,661 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,662 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,662 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,662 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,664 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,665 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,665 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,665 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,665 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,666 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,668 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,668 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,669 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,669 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,669 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,669 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,672 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,672 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,672 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,672 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,673 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,673 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,676 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,676 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,676 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,676 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,677 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,677 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:22:45,688 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-10-06 21:22:45,740 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:22:45,748 INFO L339 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 21:22:45,748 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-10-06 21:22:45,768 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:22:45,780 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 205 transitions, 450 flow [2021-10-06 21:22:45,784 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 205 transitions, 450 flow [2021-10-06 21:22:45,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 214 places, 205 transitions, 450 flow [2021-10-06 21:22:45,881 INFO L129 PetriNetUnfolder]: 7/200 cut-off events. [2021-10-06 21:22:45,882 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-10-06 21:22:45,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 200 events. 7/200 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 260 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2021-10-06 21:22:45,898 INFO L116 LiptonReduction]: Number of co-enabled transitions 7588 [2021-10-06 21:23:09,777 INFO L131 LiptonReduction]: Checked pairs total: 26033 [2021-10-06 21:23:09,778 INFO L133 LiptonReduction]: Total number of compositions: 186 [2021-10-06 21:23:09,789 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 75 transitions, 190 flow [2021-10-06 21:23:12,777 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49763 states, 49741 states have (on average 4.87917412195171) internal successors, (242695), 49762 states have internal predecessors, (242695), 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) [2021-10-06 21:23:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 49763 states, 49741 states have (on average 4.87917412195171) internal successors, (242695), 49762 states have internal predecessors, (242695), 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) [2021-10-06 21:23:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:23:13,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:13,060 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:23:13,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:23:13,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:13,069 INFO L82 PathProgramCache]: Analyzing trace with hash 756, now seen corresponding path program 1 times [2021-10-06 21:23:13,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:13,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699143663] [2021-10-06 21:23:13,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:13,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:13,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:13,097 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:13,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:23:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:13,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:23:13,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:13,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:13,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:13,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699143663] [2021-10-06 21:23:13,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699143663] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:13,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:13,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:23:13,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275535849] [2021-10-06 21:23:13,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:23:13,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:13,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:23:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:23:13,475 INFO L87 Difference]: Start difference. First operand has 49763 states, 49741 states have (on average 4.87917412195171) internal successors, (242695), 49762 states have internal predecessors, (242695), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-10-06 21:23:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:15,770 INFO L93 Difference]: Finished difference Result 49760 states and 235608 transitions. [2021-10-06 21:23:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:23:15,772 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2021-10-06 21:23:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:16,981 INFO L225 Difference]: With dead ends: 49760 [2021-10-06 21:23:16,982 INFO L226 Difference]: Without dead ends: 49760 [2021-10-06 21:23:16,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:23:17,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49760 states. [2021-10-06 21:23:20,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49760 to 49760. [2021-10-06 21:23:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49760 states, 49741 states have (on average 4.73669608572405) internal successors, (235608), 49759 states have internal predecessors, (235608), 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) [2021-10-06 21:23:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49760 states to 49760 states and 235608 transitions. [2021-10-06 21:23:21,191 INFO L78 Accepts]: Start accepts. Automaton has 49760 states and 235608 transitions. Word has length 1 [2021-10-06 21:23:21,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:21,195 INFO L470 AbstractCegarLoop]: Abstraction has 49760 states and 235608 transitions. [2021-10-06 21:23:21,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-10-06 21:23:21,196 INFO L276 IsEmpty]: Start isEmpty. Operand 49760 states and 235608 transitions. [2021-10-06 21:23:21,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:23:21,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:21,198 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:23:21,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:21,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:21,410 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:23:21,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:21,413 INFO L82 PathProgramCache]: Analyzing trace with hash 742707, now seen corresponding path program 1 times [2021-10-06 21:23:21,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:21,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713471289] [2021-10-06 21:23:21,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:21,415 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:21,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:21,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:21,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:23:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:21,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:23:21,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:21,797 INFO L354 Elim1Store]: treesize reduction 160, result has 17.1 percent of original size [2021-10-06 21:23:21,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 54 treesize of output 69 [2021-10-06 21:23:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:22,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:22,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:22,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713471289] [2021-10-06 21:23:22,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713471289] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:22,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:22,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:23:22,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599219950] [2021-10-06 21:23:22,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:23:22,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:23:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:22,165 INFO L87 Difference]: Start difference. First operand 49760 states and 235608 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-06 21:23:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:23,431 INFO L93 Difference]: Finished difference Result 48457 states and 229979 transitions. [2021-10-06 21:23:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:23,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 3 [2021-10-06 21:23:23,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:24,609 INFO L225 Difference]: With dead ends: 48457 [2021-10-06 21:23:24,610 INFO L226 Difference]: Without dead ends: 48457 [2021-10-06 21:23:24,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:24,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48457 states. [2021-10-06 21:23:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48457 to 48457. [2021-10-06 21:23:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48457 states, 48440 states have (on average 4.747708505367465) internal successors, (229979), 48456 states have internal predecessors, (229979), 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) [2021-10-06 21:23:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48457 states to 48457 states and 229979 transitions. [2021-10-06 21:23:27,654 INFO L78 Accepts]: Start accepts. Automaton has 48457 states and 229979 transitions. Word has length 3 [2021-10-06 21:23:27,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:27,654 INFO L470 AbstractCegarLoop]: Abstraction has 48457 states and 229979 transitions. [2021-10-06 21:23:27,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-06 21:23:27,655 INFO L276 IsEmpty]: Start isEmpty. Operand 48457 states and 229979 transitions. [2021-10-06 21:23:27,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:23:27,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:27,655 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:23:27,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-06 21:23:27,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:27,867 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:23:27,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:27,869 INFO L82 PathProgramCache]: Analyzing trace with hash 742709, now seen corresponding path program 1 times [2021-10-06 21:23:27,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:27,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150266592] [2021-10-06 21:23:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:27,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:27,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:27,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:27,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:23:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:27,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:23:27,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:28,408 INFO L354 Elim1Store]: treesize reduction 349, result has 15.9 percent of original size [2021-10-06 21:23:28,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 101 [2021-10-06 21:23:28,422 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-06 21:23:28,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 106 treesize of output 102 [2021-10-06 21:23:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:28,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:28,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:28,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150266592] [2021-10-06 21:23:28,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150266592] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:28,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:28,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:23:28,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087865056] [2021-10-06 21:23:28,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:23:28,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:28,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:23:28,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:28,884 INFO L87 Difference]: Start difference. First operand 48457 states and 229979 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-06 21:23:29,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:29,945 INFO L93 Difference]: Finished difference Result 47154 states and 224350 transitions. [2021-10-06 21:23:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:29,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 3 [2021-10-06 21:23:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:30,511 INFO L225 Difference]: With dead ends: 47154 [2021-10-06 21:23:30,512 INFO L226 Difference]: Without dead ends: 47154 [2021-10-06 21:23:30,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47154 states. [2021-10-06 21:23:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47154 to 47154. [2021-10-06 21:23:32,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47154 states, 47139 states have (on average 4.759328793567959) internal successors, (224350), 47153 states have internal predecessors, (224350), 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) [2021-10-06 21:23:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47154 states to 47154 states and 224350 transitions. [2021-10-06 21:23:33,478 INFO L78 Accepts]: Start accepts. Automaton has 47154 states and 224350 transitions. Word has length 3 [2021-10-06 21:23:33,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:33,478 INFO L470 AbstractCegarLoop]: Abstraction has 47154 states and 224350 transitions. [2021-10-06 21:23:33,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-06 21:23:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 47154 states and 224350 transitions. [2021-10-06 21:23:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:23:33,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:33,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:23:33,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-06 21:23:33,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:33,691 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:23:33,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:33,693 INFO L82 PathProgramCache]: Analyzing trace with hash 713759420, now seen corresponding path program 1 times [2021-10-06 21:23:33,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:33,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959286362] [2021-10-06 21:23:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:33,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:33,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:33,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:33,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:23:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:33,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:23:33,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:33,894 INFO L354 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2021-10-06 21:23:33,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 54 [2021-10-06 21:23:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:34,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:34,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:34,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959286362] [2021-10-06 21:23:34,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959286362] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:34,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:34,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:23:34,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117984062] [2021-10-06 21:23:34,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:23:34,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:34,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:23:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:34,298 INFO L87 Difference]: Start difference. First operand 47154 states and 224350 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-06 21:23:35,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:35,521 INFO L93 Difference]: Finished difference Result 46896 states and 223481 transitions. [2021-10-06 21:23:35,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:35,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 5 [2021-10-06 21:23:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:36,049 INFO L225 Difference]: With dead ends: 46896 [2021-10-06 21:23:36,049 INFO L226 Difference]: Without dead ends: 46896 [2021-10-06 21:23:36,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46896 states. [2021-10-06 21:23:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46896 to 46896. [2021-10-06 21:23:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46896 states, 46883 states have (on average 4.7667811360194525) internal successors, (223481), 46895 states have internal predecessors, (223481), 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) [2021-10-06 21:23:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46896 states to 46896 states and 223481 transitions. [2021-10-06 21:23:38,977 INFO L78 Accepts]: Start accepts. Automaton has 46896 states and 223481 transitions. Word has length 5 [2021-10-06 21:23:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:38,978 INFO L470 AbstractCegarLoop]: Abstraction has 46896 states and 223481 transitions. [2021-10-06 21:23:38,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-06 21:23:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 46896 states and 223481 transitions. [2021-10-06 21:23:38,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:23:38,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:38,983 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:23:39,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:39,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:39,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:23:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:39,197 INFO L82 PathProgramCache]: Analyzing trace with hash 713759421, now seen corresponding path program 1 times [2021-10-06 21:23:39,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:39,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938575523] [2021-10-06 21:23:39,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:39,198 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:39,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:39,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:39,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:23:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:39,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:23:39,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:39,686 INFO L354 Elim1Store]: treesize reduction 349, result has 15.9 percent of original size [2021-10-06 21:23:39,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 86 [2021-10-06 21:23:39,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 89 treesize of output 87 [2021-10-06 21:23:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:40,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:40,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:40,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938575523] [2021-10-06 21:23:40,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938575523] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:40,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:40,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:23:40,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856338056] [2021-10-06 21:23:40,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:23:40,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:40,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:23:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:40,229 INFO L87 Difference]: Start difference. First operand 46896 states and 223481 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-06 21:23:41,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:41,272 INFO L93 Difference]: Finished difference Result 46638 states and 222612 transitions. [2021-10-06 21:23:41,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:41,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 5 [2021-10-06 21:23:41,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:41,658 INFO L225 Difference]: With dead ends: 46638 [2021-10-06 21:23:41,658 INFO L226 Difference]: Without dead ends: 46638 [2021-10-06 21:23:41,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46638 states. [2021-10-06 21:23:43,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46638 to 46638. [2021-10-06 21:23:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46638 states, 46627 states have (on average 4.774315310871383) internal successors, (222612), 46637 states have internal predecessors, (222612), 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) [2021-10-06 21:23:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46638 states to 46638 states and 222612 transitions. [2021-10-06 21:23:43,951 INFO L78 Accepts]: Start accepts. Automaton has 46638 states and 222612 transitions. Word has length 5 [2021-10-06 21:23:43,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:43,951 INFO L470 AbstractCegarLoop]: Abstraction has 46638 states and 222612 transitions. [2021-10-06 21:23:43,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-06 21:23:43,952 INFO L276 IsEmpty]: Start isEmpty. Operand 46638 states and 222612 transitions. [2021-10-06 21:23:43,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:23:43,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:43,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:43,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:44,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:44,171 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:23:44,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:44,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1271948501, now seen corresponding path program 1 times [2021-10-06 21:23:44,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:44,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804459744] [2021-10-06 21:23:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:44,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:44,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:44,174 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:44,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:23:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:44,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:23:44,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:44,375 INFO L354 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2021-10-06 21:23:44,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 59 [2021-10-06 21:23:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:45,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:45,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:45,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804459744] [2021-10-06 21:23:45,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804459744] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:45,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:45,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:23:45,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669137950] [2021-10-06 21:23:45,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:23:45,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:23:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:45,548 INFO L87 Difference]: Start difference. First operand 46638 states and 222612 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-06 21:23:46,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:46,044 INFO L93 Difference]: Finished difference Result 46350 states and 221628 transitions. [2021-10-06 21:23:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:46,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 7 [2021-10-06 21:23:46,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:46,879 INFO L225 Difference]: With dead ends: 46350 [2021-10-06 21:23:46,880 INFO L226 Difference]: Without dead ends: 46350 [2021-10-06 21:23:46,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:47,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46350 states. [2021-10-06 21:23:48,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46350 to 46350. [2021-10-06 21:23:48,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46350 states, 46341 states have (on average 4.78254677283615) internal successors, (221628), 46349 states have internal predecessors, (221628), 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) [2021-10-06 21:23:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46350 states to 46350 states and 221628 transitions. [2021-10-06 21:23:49,246 INFO L78 Accepts]: Start accepts. Automaton has 46350 states and 221628 transitions. Word has length 7 [2021-10-06 21:23:49,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:49,246 INFO L470 AbstractCegarLoop]: Abstraction has 46350 states and 221628 transitions. [2021-10-06 21:23:49,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-06 21:23:49,247 INFO L276 IsEmpty]: Start isEmpty. Operand 46350 states and 221628 transitions. [2021-10-06 21:23:49,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:23:49,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:49,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:49,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:49,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:49,456 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:23:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:49,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1271948500, now seen corresponding path program 1 times [2021-10-06 21:23:49,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:49,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083434068] [2021-10-06 21:23:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:49,460 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:49,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:49,461 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:49,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:23:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:49,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:23:49,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:49,892 INFO L354 Elim1Store]: treesize reduction 349, result has 15.9 percent of original size [2021-10-06 21:23:49,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 90 [2021-10-06 21:23:49,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 94 treesize of output 92 [2021-10-06 21:23:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:50,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:50,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:50,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083434068] [2021-10-06 21:23:50,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083434068] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:50,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:50,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:23:50,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980857003] [2021-10-06 21:23:50,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:23:50,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:23:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:50,838 INFO L87 Difference]: Start difference. First operand 46350 states and 221628 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-06 21:23:51,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:51,795 INFO L93 Difference]: Finished difference Result 46062 states and 220644 transitions. [2021-10-06 21:23:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:51,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 7 [2021-10-06 21:23:51,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:52,046 INFO L225 Difference]: With dead ends: 46062 [2021-10-06 21:23:52,047 INFO L226 Difference]: Without dead ends: 46062 [2021-10-06 21:23:52,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46062 states. [2021-10-06 21:23:53,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46062 to 46062. [2021-10-06 21:23:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46062 states, 46055 states have (on average 4.790880469004451) internal successors, (220644), 46061 states have internal predecessors, (220644), 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) [2021-10-06 21:23:54,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46062 states to 46062 states and 220644 transitions. [2021-10-06 21:23:54,664 INFO L78 Accepts]: Start accepts. Automaton has 46062 states and 220644 transitions. Word has length 7 [2021-10-06 21:23:54,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:54,665 INFO L470 AbstractCegarLoop]: Abstraction has 46062 states and 220644 transitions. [2021-10-06 21:23:54,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-06 21:23:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 46062 states and 220644 transitions. [2021-10-06 21:23:54,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:23:54,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:54,676 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:54,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:54,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:54,888 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:23:54,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:54,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1723188908, now seen corresponding path program 1 times [2021-10-06 21:23:54,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:54,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593672054] [2021-10-06 21:23:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:54,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:54,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:54,892 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:54,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:23:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:54,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:23:54,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:55,314 INFO L354 Elim1Store]: treesize reduction 349, result has 15.9 percent of original size [2021-10-06 21:23:55,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 71 [2021-10-06 21:23:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:55,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:55,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:55,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593672054] [2021-10-06 21:23:55,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593672054] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:55,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:55,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:23:55,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173833644] [2021-10-06 21:23:55,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:23:55,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:23:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:55,562 INFO L87 Difference]: Start difference. First operand 46062 states and 220644 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-06 21:23:56,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:56,536 INFO L93 Difference]: Finished difference Result 44544 states and 214045 transitions. [2021-10-06 21:23:56,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:23:56,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) Word has length 9 [2021-10-06 21:23:56,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:56,920 INFO L225 Difference]: With dead ends: 44544 [2021-10-06 21:23:56,920 INFO L226 Difference]: Without dead ends: 44544 [2021-10-06 21:23:56,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:23:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44544 states. [2021-10-06 21:23:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44544 to 44544. [2021-10-06 21:23:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44544 states, 44539 states have (on average 4.805788185635062) internal successors, (214045), 44543 states have internal predecessors, (214045), 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) [2021-10-06 21:23:59,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44544 states to 44544 states and 214045 transitions. [2021-10-06 21:23:59,175 INFO L78 Accepts]: Start accepts. Automaton has 44544 states and 214045 transitions. Word has length 9 [2021-10-06 21:23:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:59,175 INFO L470 AbstractCegarLoop]: Abstraction has 44544 states and 214045 transitions. [2021-10-06 21:23:59,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-06 21:23:59,176 INFO L276 IsEmpty]: Start isEmpty. Operand 44544 states and 214045 transitions. [2021-10-06 21:23:59,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:23:59,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:59,177 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:59,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:59,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:59,386 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:23:59,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:59,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1723188910, now seen corresponding path program 1 times [2021-10-06 21:23:59,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:59,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170923680] [2021-10-06 21:23:59,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:23:59,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:59,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:59,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:59,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:23:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:59,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:23:59,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:59,595 INFO L354 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2021-10-06 21:23:59,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 38 [2021-10-06 21:23:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:59,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:59,678 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:59,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170923680] [2021-10-06 21:23:59,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170923680] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:23:59,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:23:59,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:23:59,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674801088] [2021-10-06 21:23:59,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:23:59,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:59,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:23:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:23:59,683 INFO L87 Difference]: Start difference. First operand 44544 states and 214045 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-06 21:24:00,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:00,620 INFO L93 Difference]: Finished difference Result 43026 states and 207446 transitions. [2021-10-06 21:24:00,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:24:00,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2021-10-06 21:24:00,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:00,932 INFO L225 Difference]: With dead ends: 43026 [2021-10-06 21:24:00,932 INFO L226 Difference]: Without dead ends: 43026 [2021-10-06 21:24:00,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:24:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43026 states. [2021-10-06 21:24:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43026 to 43026. [2021-10-06 21:24:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43026 states, 43023 states have (on average 4.8217465076819375) internal successors, (207446), 43025 states have internal predecessors, (207446), 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) [2021-10-06 21:24:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43026 states to 43026 states and 207446 transitions. [2021-10-06 21:24:03,092 INFO L78 Accepts]: Start accepts. Automaton has 43026 states and 207446 transitions. Word has length 9 [2021-10-06 21:24:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:03,092 INFO L470 AbstractCegarLoop]: Abstraction has 43026 states and 207446 transitions. [2021-10-06 21:24:03,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-06 21:24:03,092 INFO L276 IsEmpty]: Start isEmpty. Operand 43026 states and 207446 transitions. [2021-10-06 21:24:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:24:03,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:03,095 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:03,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:03,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:03,307 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:24:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:03,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1872817489, now seen corresponding path program 1 times [2021-10-06 21:24:03,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:03,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983341062] [2021-10-06 21:24:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:24:03,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:03,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:03,310 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:03,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:24:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:24:03,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:24:03,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:03,539 INFO L354 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2021-10-06 21:24:03,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 38 [2021-10-06 21:24:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:03,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:03,877 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:03,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983341062] [2021-10-06 21:24:03,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983341062] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:03,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:03,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:24:03,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84122939] [2021-10-06 21:24:03,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 21:24:03,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:03,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 21:24:03,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:24:03,880 INFO L87 Difference]: Start difference. First operand 43026 states and 207446 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-10-06 21:24:04,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:04,971 INFO L93 Difference]: Finished difference Result 33954 states and 160358 transitions. [2021-10-06 21:24:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:24:04,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) Word has length 11 [2021-10-06 21:24:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:05,274 INFO L225 Difference]: With dead ends: 33954 [2021-10-06 21:24:05,275 INFO L226 Difference]: Without dead ends: 33954 [2021-10-06 21:24:05,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:24:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33954 states. [2021-10-06 21:24:06,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33954 to 33954. [2021-10-06 21:24:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33954 states, 33952 states have (on average 4.723079641847314) internal successors, (160358), 33953 states have internal predecessors, (160358), 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) [2021-10-06 21:24:07,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33954 states to 33954 states and 160358 transitions. [2021-10-06 21:24:07,555 INFO L78 Accepts]: Start accepts. Automaton has 33954 states and 160358 transitions. Word has length 11 [2021-10-06 21:24:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:07,556 INFO L470 AbstractCegarLoop]: Abstraction has 33954 states and 160358 transitions. [2021-10-06 21:24:07,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-10-06 21:24:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand 33954 states and 160358 transitions. [2021-10-06 21:24:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:24:07,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:07,567 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:07,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-06 21:24:07,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:07,780 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:24:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1872817488, now seen corresponding path program 1 times [2021-10-06 21:24:07,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:07,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918922224] [2021-10-06 21:24:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:24:07,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:07,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:07,783 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:07,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:24:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:24:07,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:24:07,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:08,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:08,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:08,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918922224] [2021-10-06 21:24:08,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918922224] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:08,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:08,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:24:08,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093308592] [2021-10-06 21:24:08,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:24:08,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:08,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:24:08,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:24:08,168 INFO L87 Difference]: Start difference. First operand 33954 states and 160358 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-06 21:24:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:08,384 INFO L93 Difference]: Finished difference Result 24882 states and 113270 transitions. [2021-10-06 21:24:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:24:08,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2021-10-06 21:24:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:08,493 INFO L225 Difference]: With dead ends: 24882 [2021-10-06 21:24:08,493 INFO L226 Difference]: Without dead ends: 24882 [2021-10-06 21:24:08,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:24:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24882 states. [2021-10-06 21:24:09,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24882 to 24882. [2021-10-06 21:24:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24882 states, 24881 states have (on average 4.552469756038745) internal successors, (113270), 24881 states have internal predecessors, (113270), 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) [2021-10-06 21:24:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24882 states to 24882 states and 113270 transitions. [2021-10-06 21:24:09,596 INFO L78 Accepts]: Start accepts. Automaton has 24882 states and 113270 transitions. Word has length 11 [2021-10-06 21:24:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:09,596 INFO L470 AbstractCegarLoop]: Abstraction has 24882 states and 113270 transitions. [2021-10-06 21:24:09,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-06 21:24:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 24882 states and 113270 transitions. [2021-10-06 21:24:10,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:24:10,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:10,123 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:24:10,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-06 21:24:10,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:10,336 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:24:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:10,338 INFO L82 PathProgramCache]: Analyzing trace with hash -2093291861, now seen corresponding path program 1 times [2021-10-06 21:24:10,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:10,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182456987] [2021-10-06 21:24:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:24:10,339 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:10,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:10,341 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:10,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:24:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:24:10,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:24:10,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:10,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:11,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:11,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182456987] [2021-10-06 21:24:11,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182456987] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:11,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:11,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:24:11,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674226171] [2021-10-06 21:24:11,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:24:11,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:11,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:24:11,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:24:11,236 INFO L87 Difference]: Start difference. First operand 24882 states and 113270 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 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) [2021-10-06 21:24:17,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:17,716 INFO L93 Difference]: Finished difference Result 34714 states and 154303 transitions. [2021-10-06 21:24:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 21:24:17,717 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 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) Word has length 47 [2021-10-06 21:24:17,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:18,189 INFO L225 Difference]: With dead ends: 34714 [2021-10-06 21:24:18,189 INFO L226 Difference]: Without dead ends: 34714 [2021-10-06 21:24:18,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1693.2ms TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:24:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34714 states. [2021-10-06 21:24:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34714 to 29048. [2021-10-06 21:24:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29048 states, 29047 states have (on average 4.466795193995938) internal successors, (129747), 29047 states have internal predecessors, (129747), 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) [2021-10-06 21:24:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29048 states to 29048 states and 129747 transitions. [2021-10-06 21:24:19,785 INFO L78 Accepts]: Start accepts. Automaton has 29048 states and 129747 transitions. Word has length 47 [2021-10-06 21:24:19,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:19,785 INFO L470 AbstractCegarLoop]: Abstraction has 29048 states and 129747 transitions. [2021-10-06 21:24:19,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 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) [2021-10-06 21:24:19,785 INFO L276 IsEmpty]: Start isEmpty. Operand 29048 states and 129747 transitions. [2021-10-06 21:24:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:24:19,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:19,879 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:24:19,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:20,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:20,089 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:24:20,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:20,090 INFO L82 PathProgramCache]: Analyzing trace with hash -137792139, now seen corresponding path program 2 times [2021-10-06 21:24:20,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:20,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821170893] [2021-10-06 21:24:20,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:24:20,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:20,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:20,097 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:20,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:24:20,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:24:20,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:20,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:24:20,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:20,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:20,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:20,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821170893] [2021-10-06 21:24:20,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821170893] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:20,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:20,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-06 21:24:20,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915183130] [2021-10-06 21:24:20,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:24:20,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:20,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:24:20,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:24:20,988 INFO L87 Difference]: Start difference. First operand 29048 states and 129747 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 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) [2021-10-06 21:24:31,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:31,940 INFO L93 Difference]: Finished difference Result 44362 states and 184869 transitions. [2021-10-06 21:24:31,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:24:31,941 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 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) Word has length 47 [2021-10-06 21:24:31,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:32,140 INFO L225 Difference]: With dead ends: 44362 [2021-10-06 21:24:32,140 INFO L226 Difference]: Without dead ends: 36850 [2021-10-06 21:24:32,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 3898.4ms TimeCoverageRelationStatistics Valid=542, Invalid=2008, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:24:32,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36850 states. [2021-10-06 21:24:33,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36850 to 28238. [2021-10-06 21:24:33,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28238 states, 28237 states have (on average 4.2341962673088505) internal successors, (119561), 28237 states have internal predecessors, (119561), 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) [2021-10-06 21:24:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28238 states to 28238 states and 119561 transitions. [2021-10-06 21:24:33,760 INFO L78 Accepts]: Start accepts. Automaton has 28238 states and 119561 transitions. Word has length 47 [2021-10-06 21:24:33,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:33,760 INFO L470 AbstractCegarLoop]: Abstraction has 28238 states and 119561 transitions. [2021-10-06 21:24:33,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 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) [2021-10-06 21:24:33,760 INFO L276 IsEmpty]: Start isEmpty. Operand 28238 states and 119561 transitions. [2021-10-06 21:24:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:24:33,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:33,854 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:24:33,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:34,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:34,055 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:24:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:34,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1954458465, now seen corresponding path program 3 times [2021-10-06 21:24:34,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:34,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255488978] [2021-10-06 21:24:34,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:24:34,058 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:34,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:34,059 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:34,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:24:34,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:24:34,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:34,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:24:34,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:34,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:35,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:35,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255488978] [2021-10-06 21:24:35,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255488978] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:35,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:35,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-06 21:24:35,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14745940] [2021-10-06 21:24:35,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:24:35,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:35,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:24:35,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:24:35,248 INFO L87 Difference]: Start difference. First operand 28238 states and 119561 transitions. Second operand has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 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) [2021-10-06 21:24:51,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:51,660 INFO L93 Difference]: Finished difference Result 46110 states and 188285 transitions. [2021-10-06 21:24:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 21:24:51,662 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 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) Word has length 47 [2021-10-06 21:24:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:51,865 INFO L225 Difference]: With dead ends: 46110 [2021-10-06 21:24:51,865 INFO L226 Difference]: Without dead ends: 44762 [2021-10-06 21:24:51,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 6118.5ms TimeCoverageRelationStatistics Valid=578, Invalid=3582, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:24:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44762 states. [2021-10-06 21:24:53,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44762 to 31888. [2021-10-06 21:24:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31888 states, 31887 states have (on average 4.19813717188823) internal successors, (133866), 31887 states have internal predecessors, (133866), 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) [2021-10-06 21:24:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31888 states to 31888 states and 133866 transitions. [2021-10-06 21:24:53,447 INFO L78 Accepts]: Start accepts. Automaton has 31888 states and 133866 transitions. Word has length 47 [2021-10-06 21:24:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:53,448 INFO L470 AbstractCegarLoop]: Abstraction has 31888 states and 133866 transitions. [2021-10-06 21:24:53,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 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) [2021-10-06 21:24:53,448 INFO L276 IsEmpty]: Start isEmpty. Operand 31888 states and 133866 transitions. [2021-10-06 21:24:53,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:24:53,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:53,537 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:24:53,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:53,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:53,738 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:24:53,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:53,739 INFO L82 PathProgramCache]: Analyzing trace with hash 310848645, now seen corresponding path program 4 times [2021-10-06 21:24:53,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:53,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086499713] [2021-10-06 21:24:53,741 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:24:53,741 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:53,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:53,743 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:53,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:24:53,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:24:53,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:53,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:24:53,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:54,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:54,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:54,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086499713] [2021-10-06 21:24:54,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086499713] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:24:54,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:24:54,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-06 21:24:54,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472801917] [2021-10-06 21:24:54,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:24:54,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:54,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:24:54,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:24:54,775 INFO L87 Difference]: Start difference. First operand 31888 states and 133866 transitions. Second operand has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 18 states have internal predecessors, (68), 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) [2021-10-06 21:25:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:08,872 INFO L93 Difference]: Finished difference Result 44512 states and 176459 transitions. [2021-10-06 21:25:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:25:08,873 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 18 states have internal predecessors, (68), 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) Word has length 47 [2021-10-06 21:25:08,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:09,025 INFO L225 Difference]: With dead ends: 44512 [2021-10-06 21:25:09,025 INFO L226 Difference]: Without dead ends: 37678 [2021-10-06 21:25:09,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 5321.7ms TimeCoverageRelationStatistics Valid=660, Invalid=2310, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:25:09,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37678 states. [2021-10-06 21:25:09,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37678 to 28330. [2021-10-06 21:25:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28330 states, 28329 states have (on average 3.998023227081789) internal successors, (113260), 28329 states have internal predecessors, (113260), 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) [2021-10-06 21:25:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28330 states to 28330 states and 113260 transitions. [2021-10-06 21:25:10,542 INFO L78 Accepts]: Start accepts. Automaton has 28330 states and 113260 transitions. Word has length 47 [2021-10-06 21:25:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:10,545 INFO L470 AbstractCegarLoop]: Abstraction has 28330 states and 113260 transitions. [2021-10-06 21:25:10,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 18 states have internal predecessors, (68), 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) [2021-10-06 21:25:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 28330 states and 113260 transitions. [2021-10-06 21:25:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:25:10,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:10,680 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:25:10,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:10,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:10,887 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:25:10,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:10,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1694435025, now seen corresponding path program 5 times [2021-10-06 21:25:10,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:10,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101464213] [2021-10-06 21:25:10,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:25:10,889 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:10,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:10,890 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:10,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:25:11,111 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:25:11,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:11,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:25:11,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:11,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:12,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:12,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101464213] [2021-10-06 21:25:12,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101464213] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:25:12,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:25:12,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-06 21:25:12,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859820467] [2021-10-06 21:25:12,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:25:12,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:12,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:25:12,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:25:12,207 INFO L87 Difference]: Start difference. First operand 28330 states and 113260 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 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) [2021-10-06 21:25:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:32,768 INFO L93 Difference]: Finished difference Result 46484 states and 181794 transitions. [2021-10-06 21:25:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-06 21:25:32,769 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 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) Word has length 47 [2021-10-06 21:25:32,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:32,933 INFO L225 Difference]: With dead ends: 46484 [2021-10-06 21:25:32,933 INFO L226 Difference]: Without dead ends: 45156 [2021-10-06 21:25:32,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 8672.1ms TimeCoverageRelationStatistics Valid=712, Invalid=3710, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:25:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45156 states. [2021-10-06 21:25:33,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45156 to 31396. [2021-10-06 21:25:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31396 states, 31395 states have (on average 3.9555661729574774) internal successors, (124185), 31395 states have internal predecessors, (124185), 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) [2021-10-06 21:25:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31396 states to 31396 states and 124185 transitions. [2021-10-06 21:25:34,403 INFO L78 Accepts]: Start accepts. Automaton has 31396 states and 124185 transitions. Word has length 47 [2021-10-06 21:25:34,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:34,404 INFO L470 AbstractCegarLoop]: Abstraction has 31396 states and 124185 transitions. [2021-10-06 21:25:34,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 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) [2021-10-06 21:25:34,404 INFO L276 IsEmpty]: Start isEmpty. Operand 31396 states and 124185 transitions. [2021-10-06 21:25:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:25:34,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:34,505 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:25:34,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:34,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:34,706 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:25:34,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:34,707 INFO L82 PathProgramCache]: Analyzing trace with hash 638623273, now seen corresponding path program 6 times [2021-10-06 21:25:34,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:34,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216436570] [2021-10-06 21:25:34,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:25:34,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:34,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:34,710 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:34,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:25:34,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:25:34,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:34,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:25:34,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:35,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:36,288 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:36,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216436570] [2021-10-06 21:25:36,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216436570] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:25:36,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:25:36,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:25:36,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458009430] [2021-10-06 21:25:36,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:25:36,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:36,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:25:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:25:36,292 INFO L87 Difference]: Start difference. First operand 31396 states and 124185 transitions. Second operand has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 26 states have internal predecessors, (79), 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) [2021-10-06 21:25:55,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:55,338 INFO L93 Difference]: Finished difference Result 49116 states and 189882 transitions. [2021-10-06 21:25:55,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-06 21:25:55,339 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 26 states have internal predecessors, (79), 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) Word has length 47 [2021-10-06 21:25:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:55,522 INFO L225 Difference]: With dead ends: 49116 [2021-10-06 21:25:55,523 INFO L226 Difference]: Without dead ends: 48664 [2021-10-06 21:25:55,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 8287.0ms TimeCoverageRelationStatistics Valid=787, Invalid=4615, Unknown=0, NotChecked=0, Total=5402 [2021-10-06 21:25:55,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48664 states. [2021-10-06 21:25:56,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48664 to 33938. [2021-10-06 21:25:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33938 states, 33937 states have (on average 3.9140466157880778) internal successors, (132831), 33937 states have internal predecessors, (132831), 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) [2021-10-06 21:25:57,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33938 states to 33938 states and 132831 transitions. [2021-10-06 21:25:57,038 INFO L78 Accepts]: Start accepts. Automaton has 33938 states and 132831 transitions. Word has length 47 [2021-10-06 21:25:57,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:57,039 INFO L470 AbstractCegarLoop]: Abstraction has 33938 states and 132831 transitions. [2021-10-06 21:25:57,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 26 states have internal predecessors, (79), 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) [2021-10-06 21:25:57,039 INFO L276 IsEmpty]: Start isEmpty. Operand 33938 states and 132831 transitions. [2021-10-06 21:25:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:25:57,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:57,125 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:25:57,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:57,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:57,332 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:25:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:57,333 INFO L82 PathProgramCache]: Analyzing trace with hash 261180119, now seen corresponding path program 7 times [2021-10-06 21:25:57,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:57,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311374961] [2021-10-06 21:25:57,334 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:25:57,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:57,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:57,335 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:57,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:25:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:25:57,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:25:57,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:57,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:58,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:58,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311374961] [2021-10-06 21:25:58,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311374961] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:25:58,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:25:58,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:25:58,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975601634] [2021-10-06 21:25:58,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:25:58,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:25:58,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:25:58,225 INFO L87 Difference]: Start difference. First operand 33938 states and 132831 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-10-06 21:25:58,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:58,969 INFO L93 Difference]: Finished difference Result 53015 states and 207222 transitions. [2021-10-06 21:25:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:25:58,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) Word has length 47 [2021-10-06 21:25:58,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:59,098 INFO L225 Difference]: With dead ends: 53015 [2021-10-06 21:25:59,098 INFO L226 Difference]: Without dead ends: 32054 [2021-10-06 21:25:59,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 23.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:25:59,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32054 states. [2021-10-06 21:26:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32054 to 32054. [2021-10-06 21:26:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32054 states, 32053 states have (on average 3.8426356347299784) internal successors, (123168), 32053 states have internal predecessors, (123168), 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) [2021-10-06 21:26:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32054 states to 32054 states and 123168 transitions. [2021-10-06 21:26:00,206 INFO L78 Accepts]: Start accepts. Automaton has 32054 states and 123168 transitions. Word has length 47 [2021-10-06 21:26:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:00,207 INFO L470 AbstractCegarLoop]: Abstraction has 32054 states and 123168 transitions. [2021-10-06 21:26:00,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-10-06 21:26:00,207 INFO L276 IsEmpty]: Start isEmpty. Operand 32054 states and 123168 transitions. [2021-10-06 21:26:00,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:26:00,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:00,701 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:26:00,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:00,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:00,917 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:26:00,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:00,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1931235131, now seen corresponding path program 8 times [2021-10-06 21:26:00,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:00,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895822766] [2021-10-06 21:26:00,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:00,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:00,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:00,921 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:00,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:26:01,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:26:01,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:01,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:26:01,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:01,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:01,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:01,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895822766] [2021-10-06 21:26:01,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895822766] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:01,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:01,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-06 21:26:01,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607753759] [2021-10-06 21:26:01,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:26:01,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:26:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:26:01,582 INFO L87 Difference]: Start difference. First operand 32054 states and 123168 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 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) [2021-10-06 21:26:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:02,453 INFO L93 Difference]: Finished difference Result 29500 states and 109275 transitions. [2021-10-06 21:26:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:26:02,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 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) Word has length 47 [2021-10-06 21:26:02,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:02,561 INFO L225 Difference]: With dead ends: 29500 [2021-10-06 21:26:02,562 INFO L226 Difference]: Without dead ends: 29278 [2021-10-06 21:26:02,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 170.2ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:02,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29278 states. [2021-10-06 21:26:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29278 to 27866. [2021-10-06 21:26:03,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27866 states, 27865 states have (on average 3.749506549434775) internal successors, (104480), 27865 states have internal predecessors, (104480), 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) [2021-10-06 21:26:03,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27866 states to 27866 states and 104480 transitions. [2021-10-06 21:26:03,555 INFO L78 Accepts]: Start accepts. Automaton has 27866 states and 104480 transitions. Word has length 47 [2021-10-06 21:26:03,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:03,555 INFO L470 AbstractCegarLoop]: Abstraction has 27866 states and 104480 transitions. [2021-10-06 21:26:03,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 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) [2021-10-06 21:26:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 27866 states and 104480 transitions. [2021-10-06 21:26:03,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:26:03,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:03,619 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:26:03,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:03,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:03,825 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:26:03,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:03,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1353995231, now seen corresponding path program 9 times [2021-10-06 21:26:03,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:03,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46105609] [2021-10-06 21:26:03,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:03,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:03,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:03,830 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:03,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:26:04,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:26:04,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:04,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:26:04,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:04,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:04,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:04,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46105609] [2021-10-06 21:26:04,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46105609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:04,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:04,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-06 21:26:04,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564490648] [2021-10-06 21:26:04,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:26:04,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:04,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:26:04,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:26:04,976 INFO L87 Difference]: Start difference. First operand 27866 states and 104480 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 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) [2021-10-06 21:26:06,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:06,138 INFO L93 Difference]: Finished difference Result 26192 states and 98507 transitions. [2021-10-06 21:26:06,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:26:06,139 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 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) Word has length 47 [2021-10-06 21:26:06,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:06,231 INFO L225 Difference]: With dead ends: 26192 [2021-10-06 21:26:06,232 INFO L226 Difference]: Without dead ends: 25994 [2021-10-06 21:26:06,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 480.2ms TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:26:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25994 states. [2021-10-06 21:26:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25994 to 25118. [2021-10-06 21:26:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25118 states, 25117 states have (on average 3.797069713739698) internal successors, (95371), 25117 states have internal predecessors, (95371), 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) [2021-10-06 21:26:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25118 states to 25118 states and 95371 transitions. [2021-10-06 21:26:07,095 INFO L78 Accepts]: Start accepts. Automaton has 25118 states and 95371 transitions. Word has length 47 [2021-10-06 21:26:07,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:07,095 INFO L470 AbstractCegarLoop]: Abstraction has 25118 states and 95371 transitions. [2021-10-06 21:26:07,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 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) [2021-10-06 21:26:07,096 INFO L276 IsEmpty]: Start isEmpty. Operand 25118 states and 95371 transitions. [2021-10-06 21:26:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:26:07,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:07,156 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:26:07,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-06 21:26:07,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:07,357 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:26:07,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:07,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1005525795, now seen corresponding path program 10 times [2021-10-06 21:26:07,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:07,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520317336] [2021-10-06 21:26:07,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:07,359 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:07,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:07,361 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:07,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:26:07,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:07,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:07,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:26:07,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:07,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:08,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:08,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520317336] [2021-10-06 21:26:08,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520317336] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:08,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:08,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-06 21:26:08,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996115791] [2021-10-06 21:26:08,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:26:08,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:08,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:26:08,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:26:08,449 INFO L87 Difference]: Start difference. First operand 25118 states and 95371 transitions. Second operand has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) [2021-10-06 21:26:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:12,960 INFO L93 Difference]: Finished difference Result 18674 states and 66954 transitions. [2021-10-06 21:26:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:26:12,961 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) Word has length 47 [2021-10-06 21:26:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:13,014 INFO L225 Difference]: With dead ends: 18674 [2021-10-06 21:26:13,014 INFO L226 Difference]: Without dead ends: 15510 [2021-10-06 21:26:13,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 2679.1ms TimeCoverageRelationStatistics Valid=443, Invalid=1627, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:26:13,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15510 states. [2021-10-06 21:26:13,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15510 to 15054. [2021-10-06 21:26:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15054 states, 15053 states have (on average 3.6773400651033015) internal successors, (55355), 15053 states have internal predecessors, (55355), 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) [2021-10-06 21:26:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15054 states to 15054 states and 55355 transitions. [2021-10-06 21:26:13,646 INFO L78 Accepts]: Start accepts. Automaton has 15054 states and 55355 transitions. Word has length 47 [2021-10-06 21:26:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:13,646 INFO L470 AbstractCegarLoop]: Abstraction has 15054 states and 55355 transitions. [2021-10-06 21:26:13,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) [2021-10-06 21:26:13,646 INFO L276 IsEmpty]: Start isEmpty. Operand 15054 states and 55355 transitions. [2021-10-06 21:26:13,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:26:13,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:13,682 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:26:13,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:13,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:13,896 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:26:13,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:13,897 INFO L82 PathProgramCache]: Analyzing trace with hash 834902685, now seen corresponding path program 11 times [2021-10-06 21:26:13,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:13,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094845340] [2021-10-06 21:26:13,899 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:13,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:13,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:13,900 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:13,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:26:14,235 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:26:14,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:14,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:26:14,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:14,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:15,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:15,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094845340] [2021-10-06 21:26:15,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094845340] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:15,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:15,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-06 21:26:15,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472724189] [2021-10-06 21:26:15,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:26:15,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:15,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:26:15,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:26:15,253 INFO L87 Difference]: Start difference. First operand 15054 states and 55355 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:26:20,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:20,840 INFO L93 Difference]: Finished difference Result 17382 states and 62035 transitions. [2021-10-06 21:26:20,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:26:20,841 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) Word has length 47 [2021-10-06 21:26:20,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:20,915 INFO L225 Difference]: With dead ends: 17382 [2021-10-06 21:26:20,915 INFO L226 Difference]: Without dead ends: 16774 [2021-10-06 21:26:20,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 3123.7ms TimeCoverageRelationStatistics Valid=437, Invalid=2113, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:26:20,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16774 states. [2021-10-06 21:26:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16774 to 15726. [2021-10-06 21:26:21,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15726 states, 15725 states have (on average 3.6464864864864865) internal successors, (57341), 15725 states have internal predecessors, (57341), 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) [2021-10-06 21:26:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15726 states to 15726 states and 57341 transitions. [2021-10-06 21:26:21,492 INFO L78 Accepts]: Start accepts. Automaton has 15726 states and 57341 transitions. Word has length 47 [2021-10-06 21:26:21,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:21,492 INFO L470 AbstractCegarLoop]: Abstraction has 15726 states and 57341 transitions. [2021-10-06 21:26:21,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:26:21,493 INFO L276 IsEmpty]: Start isEmpty. Operand 15726 states and 57341 transitions. [2021-10-06 21:26:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:26:21,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:21,523 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:26:21,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:21,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:21,724 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:26:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:21,726 INFO L82 PathProgramCache]: Analyzing trace with hash 812158535, now seen corresponding path program 12 times [2021-10-06 21:26:21,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:21,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104885025] [2021-10-06 21:26:21,727 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:26:21,727 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:21,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:21,728 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:21,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:26:22,086 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:26:22,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:22,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:26:22,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:22,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:23,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:23,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104885025] [2021-10-06 21:26:23,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104885025] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:23,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:23,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:26:23,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460182829] [2021-10-06 21:26:23,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:26:23,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:23,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:26:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:26:23,323 INFO L87 Difference]: Start difference. First operand 15726 states and 57341 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:26:31,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:31,575 INFO L93 Difference]: Finished difference Result 18136 states and 64396 transitions. [2021-10-06 21:26:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:26:31,577 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) Word has length 47 [2021-10-06 21:26:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:31,654 INFO L225 Difference]: With dead ends: 18136 [2021-10-06 21:26:31,655 INFO L226 Difference]: Without dead ends: 17398 [2021-10-06 21:26:31,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 4556.6ms TimeCoverageRelationStatistics Valid=595, Invalid=3695, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 21:26:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17398 states. [2021-10-06 21:26:32,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17398 to 16498. [2021-10-06 21:26:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16498 states, 16497 states have (on average 3.6124749954537188) internal successors, (59595), 16497 states have internal predecessors, (59595), 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) [2021-10-06 21:26:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16498 states to 16498 states and 59595 transitions. [2021-10-06 21:26:32,218 INFO L78 Accepts]: Start accepts. Automaton has 16498 states and 59595 transitions. Word has length 47 [2021-10-06 21:26:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:32,218 INFO L470 AbstractCegarLoop]: Abstraction has 16498 states and 59595 transitions. [2021-10-06 21:26:32,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:26:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 16498 states and 59595 transitions. [2021-10-06 21:26:32,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:26:32,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:32,252 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:26:32,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:32,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:32,453 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:26:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:32,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1793256815, now seen corresponding path program 13 times [2021-10-06 21:26:32,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:32,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605847244] [2021-10-06 21:26:32,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:26:32,456 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:32,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:32,466 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:32,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:26:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:32,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:26:32,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:33,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:33,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:33,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605847244] [2021-10-06 21:26:33,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605847244] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:33,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:33,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-06 21:26:33,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479477583] [2021-10-06 21:26:33,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:26:33,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:33,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:26:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:26:33,664 INFO L87 Difference]: Start difference. First operand 16498 states and 59595 transitions. Second operand has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) [2021-10-06 21:26:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:41,974 INFO L93 Difference]: Finished difference Result 26694 states and 98604 transitions. [2021-10-06 21:26:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:26:41,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) Word has length 47 [2021-10-06 21:26:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:42,075 INFO L225 Difference]: With dead ends: 26694 [2021-10-06 21:26:42,076 INFO L226 Difference]: Without dead ends: 25598 [2021-10-06 21:26:42,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 3646.4ms TimeCoverageRelationStatistics Valid=492, Invalid=1488, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:26:42,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25598 states. [2021-10-06 21:26:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25598 to 16862. [2021-10-06 21:26:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16862 states, 16861 states have (on average 3.619595516280173) internal successors, (61030), 16861 states have internal predecessors, (61030), 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) [2021-10-06 21:26:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16862 states to 16862 states and 61030 transitions. [2021-10-06 21:26:42,509 INFO L78 Accepts]: Start accepts. Automaton has 16862 states and 61030 transitions. Word has length 47 [2021-10-06 21:26:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:42,509 INFO L470 AbstractCegarLoop]: Abstraction has 16862 states and 61030 transitions. [2021-10-06 21:26:42,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) [2021-10-06 21:26:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 16862 states and 61030 transitions. [2021-10-06 21:26:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:26:42,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:42,548 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:26:42,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:42,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:42,749 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:26:42,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:42,750 INFO L82 PathProgramCache]: Analyzing trace with hash -661282001, now seen corresponding path program 14 times [2021-10-06 21:26:42,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:42,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710317900] [2021-10-06 21:26:42,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:42,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:42,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:42,753 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:42,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:26:43,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:26:43,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:43,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:26:43,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:43,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:44,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:44,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710317900] [2021-10-06 21:26:44,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710317900] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:44,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:44,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-06 21:26:44,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107121163] [2021-10-06 21:26:44,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:26:44,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:44,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:26:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:26:44,508 INFO L87 Difference]: Start difference. First operand 16862 states and 61030 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:27:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:04,550 INFO L93 Difference]: Finished difference Result 34402 states and 126034 transitions. [2021-10-06 21:27:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-06 21:27:04,551 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) Word has length 47 [2021-10-06 21:27:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:04,666 INFO L225 Difference]: With dead ends: 34402 [2021-10-06 21:27:04,666 INFO L226 Difference]: Without dead ends: 33482 [2021-10-06 21:27:04,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2513 ImplicationChecksByTransitivity, 8884.8ms TimeCoverageRelationStatistics Valid=1334, Invalid=6676, Unknown=0, NotChecked=0, Total=8010 [2021-10-06 21:27:04,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33482 states. [2021-10-06 21:27:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33482 to 17054. [2021-10-06 21:27:05,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17054 states, 17053 states have (on average 3.626575969037706) internal successors, (61844), 17053 states have internal predecessors, (61844), 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) [2021-10-06 21:27:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17054 states to 17054 states and 61844 transitions. [2021-10-06 21:27:05,373 INFO L78 Accepts]: Start accepts. Automaton has 17054 states and 61844 transitions. Word has length 47 [2021-10-06 21:27:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:05,373 INFO L470 AbstractCegarLoop]: Abstraction has 17054 states and 61844 transitions. [2021-10-06 21:27:05,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:27:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 17054 states and 61844 transitions. [2021-10-06 21:27:05,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:27:05,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:05,409 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:27:05,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:05,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:05,610 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:27:05,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:05,611 INFO L82 PathProgramCache]: Analyzing trace with hash -684026151, now seen corresponding path program 15 times [2021-10-06 21:27:05,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:05,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824924402] [2021-10-06 21:27:05,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:27:05,613 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:05,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:05,614 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:05,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:27:06,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:27:06,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:06,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:06,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:06,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:07,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:07,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824924402] [2021-10-06 21:27:07,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824924402] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:27:07,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:27:07,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:27:07,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19838770] [2021-10-06 21:27:07,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:27:07,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:27:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:27:07,303 INFO L87 Difference]: Start difference. First operand 17054 states and 61844 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:27:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:24,856 INFO L93 Difference]: Finished difference Result 26014 states and 93252 transitions. [2021-10-06 21:27:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-06 21:27:24,857 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) Word has length 47 [2021-10-06 21:27:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:24,933 INFO L225 Difference]: With dead ends: 26014 [2021-10-06 21:27:24,933 INFO L226 Difference]: Without dead ends: 25836 [2021-10-06 21:27:24,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 8780.9ms TimeCoverageRelationStatistics Valid=1062, Invalid=6420, Unknown=0, NotChecked=0, Total=7482 [2021-10-06 21:27:24,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25836 states. [2021-10-06 21:27:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25836 to 17174. [2021-10-06 21:27:25,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17174 states, 17173 states have (on average 3.6205671693938157) internal successors, (62176), 17173 states have internal predecessors, (62176), 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) [2021-10-06 21:27:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17174 states to 17174 states and 62176 transitions. [2021-10-06 21:27:25,539 INFO L78 Accepts]: Start accepts. Automaton has 17174 states and 62176 transitions. Word has length 47 [2021-10-06 21:27:25,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:25,539 INFO L470 AbstractCegarLoop]: Abstraction has 17174 states and 62176 transitions. [2021-10-06 21:27:25,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:27:25,539 INFO L276 IsEmpty]: Start isEmpty. Operand 17174 states and 62176 transitions. [2021-10-06 21:27:25,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:27:25,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:25,574 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:27:25,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:25,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:25,775 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:27:25,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:25,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1471573503, now seen corresponding path program 16 times [2021-10-06 21:27:25,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:25,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578825587] [2021-10-06 21:27:25,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:27:25,777 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:25,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:25,778 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:25,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:27:26,181 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:27:26,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:26,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:27:26,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:26,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:27,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:27,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578825587] [2021-10-06 21:27:27,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578825587] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:27:27,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:27:27,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-06 21:27:27,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907475867] [2021-10-06 21:27:27,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:27:27,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:27,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:27:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:27:27,195 INFO L87 Difference]: Start difference. First operand 17174 states and 62176 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:27:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:47,187 INFO L93 Difference]: Finished difference Result 34500 states and 126256 transitions. [2021-10-06 21:27:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-10-06 21:27:47,189 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) Word has length 47 [2021-10-06 21:27:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:47,287 INFO L225 Difference]: With dead ends: 34500 [2021-10-06 21:27:47,287 INFO L226 Difference]: Without dead ends: 33452 [2021-10-06 21:27:47,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1944 ImplicationChecksByTransitivity, 8302.0ms TimeCoverageRelationStatistics Valid=1188, Invalid=5454, Unknown=0, NotChecked=0, Total=6642 [2021-10-06 21:27:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33452 states. [2021-10-06 21:27:47,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33452 to 17450. [2021-10-06 21:27:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17450 states, 17449 states have (on average 3.6292051120408044) internal successors, (63326), 17449 states have internal predecessors, (63326), 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) [2021-10-06 21:27:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17450 states to 17450 states and 63326 transitions. [2021-10-06 21:27:48,129 INFO L78 Accepts]: Start accepts. Automaton has 17450 states and 63326 transitions. Word has length 47 [2021-10-06 21:27:48,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:48,129 INFO L470 AbstractCegarLoop]: Abstraction has 17450 states and 63326 transitions. [2021-10-06 21:27:48,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:27:48,130 INFO L276 IsEmpty]: Start isEmpty. Operand 17450 states and 63326 transitions. [2021-10-06 21:27:48,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:27:48,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:48,192 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:27:48,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:48,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:48,393 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:27:48,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:48,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1494317653, now seen corresponding path program 17 times [2021-10-06 21:27:48,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:48,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524163449] [2021-10-06 21:27:48,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:27:48,395 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:48,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:48,397 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:48,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:27:48,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:27:48,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:48,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:48,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:49,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:50,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:50,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524163449] [2021-10-06 21:27:50,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524163449] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:27:50,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:27:50,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:27:50,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097269827] [2021-10-06 21:27:50,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:27:50,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:50,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:27:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:27:50,378 INFO L87 Difference]: Start difference. First operand 17450 states and 63326 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:28:10,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:10,808 INFO L93 Difference]: Finished difference Result 26314 states and 94541 transitions. [2021-10-06 21:28:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-06 21:28:10,809 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) Word has length 47 [2021-10-06 21:28:10,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:10,889 INFO L225 Difference]: With dead ends: 26314 [2021-10-06 21:28:10,890 INFO L226 Difference]: Without dead ends: 26206 [2021-10-06 21:28:10,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 11976.4ms TimeCoverageRelationStatistics Valid=960, Invalid=5520, Unknown=0, NotChecked=0, Total=6480 [2021-10-06 21:28:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26206 states. [2021-10-06 21:28:11,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26206 to 17606. [2021-10-06 21:28:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17606 states, 17605 states have (on average 3.6351036637318943) internal successors, (63996), 17605 states have internal predecessors, (63996), 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) [2021-10-06 21:28:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17606 states to 17606 states and 63996 transitions. [2021-10-06 21:28:11,515 INFO L78 Accepts]: Start accepts. Automaton has 17606 states and 63996 transitions. Word has length 47 [2021-10-06 21:28:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:11,515 INFO L470 AbstractCegarLoop]: Abstraction has 17606 states and 63996 transitions. [2021-10-06 21:28:11,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:28:11,515 INFO L276 IsEmpty]: Start isEmpty. Operand 17606 states and 63996 transitions. [2021-10-06 21:28:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:28:11,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:11,549 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:28:11,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:11,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:11,764 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:28:11,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:11,765 INFO L82 PathProgramCache]: Analyzing trace with hash -2058549437, now seen corresponding path program 18 times [2021-10-06 21:28:11,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:11,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989632855] [2021-10-06 21:28:11,766 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:11,766 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:11,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:11,768 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:11,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:28:12,221 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:28:12,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:12,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:28:12,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:12,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:13,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:13,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989632855] [2021-10-06 21:28:13,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989632855] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:13,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:13,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:28:13,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070345632] [2021-10-06 21:28:13,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:28:13,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:13,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:28:13,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:28:13,558 INFO L87 Difference]: Start difference. First operand 17606 states and 63996 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:28:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:43,009 INFO L93 Difference]: Finished difference Result 36200 states and 132297 transitions. [2021-10-06 21:28:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-06 21:28:43,010 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) Word has length 47 [2021-10-06 21:28:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:43,121 INFO L225 Difference]: With dead ends: 36200 [2021-10-06 21:28:43,121 INFO L226 Difference]: Without dead ends: 35182 [2021-10-06 21:28:43,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2799 ImplicationChecksByTransitivity, 15140.4ms TimeCoverageRelationStatistics Valid=1413, Invalid=8687, Unknown=0, NotChecked=0, Total=10100 [2021-10-06 21:28:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35182 states. [2021-10-06 21:28:43,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35182 to 18044. [2021-10-06 21:28:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18044 states, 18043 states have (on average 3.6441279166435736) internal successors, (65751), 18043 states have internal predecessors, (65751), 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) [2021-10-06 21:28:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18044 states to 18044 states and 65751 transitions. [2021-10-06 21:28:43,805 INFO L78 Accepts]: Start accepts. Automaton has 18044 states and 65751 transitions. Word has length 47 [2021-10-06 21:28:43,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:43,805 INFO L470 AbstractCegarLoop]: Abstraction has 18044 states and 65751 transitions. [2021-10-06 21:28:43,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:28:43,805 INFO L276 IsEmpty]: Start isEmpty. Operand 18044 states and 65751 transitions. [2021-10-06 21:28:43,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:28:43,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:43,839 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:28:43,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:44,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:44,040 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:28:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:44,040 INFO L82 PathProgramCache]: Analyzing trace with hash 295582471, now seen corresponding path program 19 times [2021-10-06 21:28:44,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:44,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466557057] [2021-10-06 21:28:44,042 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:28:44,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:44,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:44,043 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:44,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:28:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:44,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:28:44,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:44,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:45,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:45,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466557057] [2021-10-06 21:28:45,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466557057] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:45,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:45,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:28:45,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313695128] [2021-10-06 21:28:45,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:28:45,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:28:45,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:28:45,822 INFO L87 Difference]: Start difference. First operand 18044 states and 65751 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:29:11,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:11,583 INFO L93 Difference]: Finished difference Result 36016 states and 131963 transitions. [2021-10-06 21:29:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-10-06 21:29:11,584 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) Word has length 47 [2021-10-06 21:29:11,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:11,695 INFO L225 Difference]: With dead ends: 36016 [2021-10-06 21:29:11,695 INFO L226 Difference]: Without dead ends: 35022 [2021-10-06 21:29:11,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 13403.5ms TimeCoverageRelationStatistics Valid=1514, Invalid=9828, Unknown=0, NotChecked=0, Total=11342 [2021-10-06 21:29:11,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35022 states. [2021-10-06 21:29:12,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35022 to 18014. [2021-10-06 21:29:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18014 states, 18013 states have (on average 3.64570032754122) internal successors, (65670), 18013 states have internal predecessors, (65670), 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) [2021-10-06 21:29:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18014 states to 18014 states and 65670 transitions. [2021-10-06 21:29:12,394 INFO L78 Accepts]: Start accepts. Automaton has 18014 states and 65670 transitions. Word has length 47 [2021-10-06 21:29:12,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:12,395 INFO L470 AbstractCegarLoop]: Abstraction has 18014 states and 65670 transitions. [2021-10-06 21:29:12,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:29:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 18014 states and 65670 transitions. [2021-10-06 21:29:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:29:12,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:12,430 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:29:12,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:12,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:12,631 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:29:12,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:12,632 INFO L82 PathProgramCache]: Analyzing trace with hash -414241271, now seen corresponding path program 20 times [2021-10-06 21:29:12,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:12,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584927118] [2021-10-06 21:29:12,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:29:12,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:12,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:12,635 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:12,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:29:13,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:29:13,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:13,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:29:13,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:13,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:14,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:14,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584927118] [2021-10-06 21:29:14,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584927118] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:14,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:14,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-06 21:29:14,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228952699] [2021-10-06 21:29:14,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:29:14,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:14,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:29:14,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:29:14,357 INFO L87 Difference]: Start difference. First operand 18014 states and 65670 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:29:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:25,790 INFO L93 Difference]: Finished difference Result 25190 states and 91215 transitions. [2021-10-06 21:29:25,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:29:25,791 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) Word has length 47 [2021-10-06 21:29:25,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:25,872 INFO L225 Difference]: With dead ends: 25190 [2021-10-06 21:29:25,872 INFO L226 Difference]: Without dead ends: 25050 [2021-10-06 21:29:25,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 6375.3ms TimeCoverageRelationStatistics Valid=663, Invalid=2759, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:29:26,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25050 states. [2021-10-06 21:29:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25050 to 17924. [2021-10-06 21:29:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17924 states, 17923 states have (on average 3.6518997935613458) internal successors, (65453), 17923 states have internal predecessors, (65453), 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) [2021-10-06 21:29:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17924 states to 17924 states and 65453 transitions. [2021-10-06 21:29:26,487 INFO L78 Accepts]: Start accepts. Automaton has 17924 states and 65453 transitions. Word has length 47 [2021-10-06 21:29:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:26,488 INFO L470 AbstractCegarLoop]: Abstraction has 17924 states and 65453 transitions. [2021-10-06 21:29:26,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:29:26,488 INFO L276 IsEmpty]: Start isEmpty. Operand 17924 states and 65453 transitions. [2021-10-06 21:29:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:29:26,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:26,524 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:29:26,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:26,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:26,730 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:29:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:26,731 INFO L82 PathProgramCache]: Analyzing trace with hash -436985421, now seen corresponding path program 21 times [2021-10-06 21:29:26,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:26,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417210284] [2021-10-06 21:29:26,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:29:26,732 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:26,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:26,734 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:26,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:29:27,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:29:27,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:27,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:29:27,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:27,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:28,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:28,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417210284] [2021-10-06 21:29:28,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417210284] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:28,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:28,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:29:28,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518272694] [2021-10-06 21:29:28,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:29:28,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:28,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:29:28,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:29:28,660 INFO L87 Difference]: Start difference. First operand 17924 states and 65453 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:29:39,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:39,870 INFO L93 Difference]: Finished difference Result 21276 states and 75249 transitions. [2021-10-06 21:29:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 21:29:39,871 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) Word has length 47 [2021-10-06 21:29:39,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:39,936 INFO L225 Difference]: With dead ends: 21276 [2021-10-06 21:29:39,936 INFO L226 Difference]: Without dead ends: 21128 [2021-10-06 21:29:39,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 7251.4ms TimeCoverageRelationStatistics Valid=677, Invalid=3613, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 21:29:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21128 states. [2021-10-06 21:29:40,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21128 to 18086. [2021-10-06 21:29:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18086 states, 18085 states have (on average 3.6475532209012993) internal successors, (65966), 18085 states have internal predecessors, (65966), 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) [2021-10-06 21:29:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18086 states to 18086 states and 65966 transitions. [2021-10-06 21:29:40,484 INFO L78 Accepts]: Start accepts. Automaton has 18086 states and 65966 transitions. Word has length 47 [2021-10-06 21:29:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:40,484 INFO L470 AbstractCegarLoop]: Abstraction has 18086 states and 65966 transitions. [2021-10-06 21:29:40,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:29:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand 18086 states and 65966 transitions. [2021-10-06 21:29:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:29:40,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:40,519 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:29:40,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:40,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:40,720 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:29:40,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:40,721 INFO L82 PathProgramCache]: Analyzing trace with hash 628505213, now seen corresponding path program 22 times [2021-10-06 21:29:40,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:40,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485698585] [2021-10-06 21:29:40,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:29:40,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:40,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:40,724 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:40,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:29:41,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:29:41,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:41,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:29:41,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:41,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:42,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:42,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485698585] [2021-10-06 21:29:42,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485698585] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:42,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:42,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-06 21:29:42,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446676578] [2021-10-06 21:29:42,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:29:42,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:29:42,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:29:42,002 INFO L87 Difference]: Start difference. First operand 18086 states and 65966 transitions. Second operand has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) [2021-10-06 21:29:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:48,828 INFO L93 Difference]: Finished difference Result 28160 states and 104188 transitions. [2021-10-06 21:29:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:29:48,829 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) Word has length 47 [2021-10-06 21:29:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:48,912 INFO L225 Difference]: With dead ends: 28160 [2021-10-06 21:29:48,913 INFO L226 Difference]: Without dead ends: 27064 [2021-10-06 21:29:48,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 3103.6ms TimeCoverageRelationStatistics Valid=524, Invalid=1828, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:29:48,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27064 states. [2021-10-06 21:29:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27064 to 18160. [2021-10-06 21:29:49,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18160 states, 18159 states have (on average 3.641940635497549) internal successors, (66134), 18159 states have internal predecessors, (66134), 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) [2021-10-06 21:29:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18160 states to 18160 states and 66134 transitions. [2021-10-06 21:29:49,556 INFO L78 Accepts]: Start accepts. Automaton has 18160 states and 66134 transitions. Word has length 47 [2021-10-06 21:29:49,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:49,557 INFO L470 AbstractCegarLoop]: Abstraction has 18160 states and 66134 transitions. [2021-10-06 21:29:49,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) [2021-10-06 21:29:49,557 INFO L276 IsEmpty]: Start isEmpty. Operand 18160 states and 66134 transitions. [2021-10-06 21:29:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:29:49,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:49,596 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:29:49,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:49,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:49,797 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:29:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:49,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1826033603, now seen corresponding path program 23 times [2021-10-06 21:29:49,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:49,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960258307] [2021-10-06 21:29:49,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:29:49,799 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:49,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:49,801 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:49,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:29:50,348 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:29:50,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:50,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:29:50,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:50,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:51,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:51,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960258307] [2021-10-06 21:29:51,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960258307] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:29:51,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:29:51,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-06 21:29:51,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514359850] [2021-10-06 21:29:51,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:29:51,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:51,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:29:51,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:29:51,323 INFO L87 Difference]: Start difference. First operand 18160 states and 66134 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:30:00,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:00,792 INFO L93 Difference]: Finished difference Result 25332 states and 91439 transitions. [2021-10-06 21:30:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:30:00,793 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) Word has length 47 [2021-10-06 21:30:00,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:00,865 INFO L225 Difference]: With dead ends: 25332 [2021-10-06 21:30:00,865 INFO L226 Difference]: Without dead ends: 25208 [2021-10-06 21:30:00,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 4465.7ms TimeCoverageRelationStatistics Valid=683, Invalid=3099, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 21:30:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25208 states. [2021-10-06 21:30:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25208 to 18096. [2021-10-06 21:30:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18096 states, 18095 states have (on average 3.646863774523349) internal successors, (65990), 18095 states have internal predecessors, (65990), 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) [2021-10-06 21:30:01,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18096 states to 18096 states and 65990 transitions. [2021-10-06 21:30:01,483 INFO L78 Accepts]: Start accepts. Automaton has 18096 states and 65990 transitions. Word has length 47 [2021-10-06 21:30:01,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:01,483 INFO L470 AbstractCegarLoop]: Abstraction has 18096 states and 65990 transitions. [2021-10-06 21:30:01,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:30:01,484 INFO L276 IsEmpty]: Start isEmpty. Operand 18096 states and 65990 transitions. [2021-10-06 21:30:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:30:01,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:01,519 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:30:01,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:01,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:01,720 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:30:01,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:01,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1848777753, now seen corresponding path program 24 times [2021-10-06 21:30:01,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:01,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338663087] [2021-10-06 21:30:01,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:30:01,722 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:01,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:01,724 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:01,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:30:02,299 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:30:02,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:02,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:30:02,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:02,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:03,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:03,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338663087] [2021-10-06 21:30:03,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338663087] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:30:03,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:30:03,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:30:03,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870699984] [2021-10-06 21:30:03,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:30:03,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:03,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:30:03,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:30:03,547 INFO L87 Difference]: Start difference. First operand 18096 states and 65990 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:30:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:15,984 INFO L93 Difference]: Finished difference Result 21310 states and 75280 transitions. [2021-10-06 21:30:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 21:30:15,984 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) Word has length 47 [2021-10-06 21:30:15,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:16,047 INFO L225 Difference]: With dead ends: 21310 [2021-10-06 21:30:16,047 INFO L226 Difference]: Without dead ends: 21194 [2021-10-06 21:30:16,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 6714.9ms TimeCoverageRelationStatistics Valid=815, Invalid=4735, Unknown=0, NotChecked=0, Total=5550 [2021-10-06 21:30:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21194 states. [2021-10-06 21:30:16,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21194 to 18088. [2021-10-06 21:30:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18088 states, 18087 states have (on average 3.647481616630729) internal successors, (65972), 18087 states have internal predecessors, (65972), 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) [2021-10-06 21:30:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18088 states to 18088 states and 65972 transitions. [2021-10-06 21:30:16,690 INFO L78 Accepts]: Start accepts. Automaton has 18088 states and 65972 transitions. Word has length 47 [2021-10-06 21:30:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:16,690 INFO L470 AbstractCegarLoop]: Abstraction has 18088 states and 65972 transitions. [2021-10-06 21:30:16,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:30:16,690 INFO L276 IsEmpty]: Start isEmpty. Operand 18088 states and 65972 transitions. [2021-10-06 21:30:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:30:16,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:16,728 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:30:16,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:16,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:16,929 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:30:16,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:16,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677269, now seen corresponding path program 25 times [2021-10-06 21:30:16,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:16,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18321914] [2021-10-06 21:30:16,932 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:30:16,932 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:16,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:16,933 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:16,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:30:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:30:17,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:30:17,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:17,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:18,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:18,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18321914] [2021-10-06 21:30:18,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18321914] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:30:18,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:30:18,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:30:18,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72917087] [2021-10-06 21:30:18,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:30:18,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:18,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:30:18,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:30:18,755 INFO L87 Difference]: Start difference. First operand 18088 states and 65972 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:30:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:27,226 INFO L93 Difference]: Finished difference Result 23848 states and 85407 transitions. [2021-10-06 21:30:27,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 21:30:27,226 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) Word has length 47 [2021-10-06 21:30:27,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:27,294 INFO L225 Difference]: With dead ends: 23848 [2021-10-06 21:30:27,294 INFO L226 Difference]: Without dead ends: 22638 [2021-10-06 21:30:27,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 4469.9ms TimeCoverageRelationStatistics Valid=626, Invalid=3930, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 21:30:27,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22638 states. [2021-10-06 21:30:27,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22638 to 19290. [2021-10-06 21:30:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19290 states, 19289 states have (on average 3.6168800870962725) internal successors, (69766), 19289 states have internal predecessors, (69766), 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) [2021-10-06 21:30:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19290 states to 19290 states and 69766 transitions. [2021-10-06 21:30:27,955 INFO L78 Accepts]: Start accepts. Automaton has 19290 states and 69766 transitions. Word has length 47 [2021-10-06 21:30:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:27,955 INFO L470 AbstractCegarLoop]: Abstraction has 19290 states and 69766 transitions. [2021-10-06 21:30:27,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:30:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 19290 states and 69766 transitions. [2021-10-06 21:30:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:30:27,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:27,995 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:30:28,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:28,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:28,196 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:30:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:28,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1919480109, now seen corresponding path program 26 times [2021-10-06 21:30:28,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:28,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389258551] [2021-10-06 21:30:28,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:30:28,197 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:28,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:28,199 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:28,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:30:28,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:30:28,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:28,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:30:28,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:29,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:29,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:29,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389258551] [2021-10-06 21:30:29,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389258551] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:30:29,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:30:29,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-06 21:30:29,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748940076] [2021-10-06 21:30:29,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:30:29,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:30:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:30:29,660 INFO L87 Difference]: Start difference. First operand 19290 states and 69766 transitions. Second operand has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) [2021-10-06 21:30:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:38,191 INFO L93 Difference]: Finished difference Result 29134 states and 105937 transitions. [2021-10-06 21:30:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:30:38,197 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) Word has length 47 [2021-10-06 21:30:38,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:38,290 INFO L225 Difference]: With dead ends: 29134 [2021-10-06 21:30:38,290 INFO L226 Difference]: Without dead ends: 27542 [2021-10-06 21:30:38,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 3753.5ms TimeCoverageRelationStatistics Valid=492, Invalid=1488, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:30:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27542 states. [2021-10-06 21:30:38,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27542 to 19718. [2021-10-06 21:30:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19718 states, 19717 states have (on average 3.6203783537049246) internal successors, (71383), 19717 states have internal predecessors, (71383), 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) [2021-10-06 21:30:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19718 states to 19718 states and 71383 transitions. [2021-10-06 21:30:39,062 INFO L78 Accepts]: Start accepts. Automaton has 19718 states and 71383 transitions. Word has length 47 [2021-10-06 21:30:39,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:39,062 INFO L470 AbstractCegarLoop]: Abstraction has 19718 states and 71383 transitions. [2021-10-06 21:30:39,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 18 states have internal predecessors, (71), 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) [2021-10-06 21:30:39,063 INFO L276 IsEmpty]: Start isEmpty. Operand 19718 states and 71383 transitions. [2021-10-06 21:30:39,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:30:39,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:39,134 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:30:39,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:39,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:39,345 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:30:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:39,346 INFO L82 PathProgramCache]: Analyzing trace with hash -672054451, now seen corresponding path program 27 times [2021-10-06 21:30:39,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:39,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780300283] [2021-10-06 21:30:39,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:30:39,347 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:39,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:39,349 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:39,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:30:39,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:30:39,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:39,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:30:39,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:40,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:41,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:41,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780300283] [2021-10-06 21:30:41,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780300283] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:30:41,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:30:41,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-06 21:30:41,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646447434] [2021-10-06 21:30:41,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:30:41,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:41,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:30:41,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:30:41,012 INFO L87 Difference]: Start difference. First operand 19718 states and 71383 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 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) [2021-10-06 21:31:01,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:01,116 INFO L93 Difference]: Finished difference Result 39018 states and 140257 transitions. [2021-10-06 21:31:01,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-06 21:31:01,117 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 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) Word has length 47 [2021-10-06 21:31:01,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:01,238 INFO L225 Difference]: With dead ends: 39018 [2021-10-06 21:31:01,238 INFO L226 Difference]: Without dead ends: 37280 [2021-10-06 21:31:01,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2485 ImplicationChecksByTransitivity, 8944.5ms TimeCoverageRelationStatistics Valid=1334, Invalid=6676, Unknown=0, NotChecked=0, Total=8010 [2021-10-06 21:31:01,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37280 states. [2021-10-06 21:31:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37280 to 20546. [2021-10-06 21:31:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20546 states, 20545 states have (on average 3.612947189097104) internal successors, (74228), 20545 states have internal predecessors, (74228), 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) [2021-10-06 21:31:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20546 states to 20546 states and 74228 transitions. [2021-10-06 21:31:02,017 INFO L78 Accepts]: Start accepts. Automaton has 20546 states and 74228 transitions. Word has length 47 [2021-10-06 21:31:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:02,017 INFO L470 AbstractCegarLoop]: Abstraction has 20546 states and 74228 transitions. [2021-10-06 21:31:02,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 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) [2021-10-06 21:31:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 20546 states and 74228 transitions. [2021-10-06 21:31:02,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:31:02,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:02,058 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:31:02,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:02,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:02,259 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:31:02,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:02,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1991519833, now seen corresponding path program 28 times [2021-10-06 21:31:02,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:02,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633669860] [2021-10-06 21:31:02,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:31:02,261 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:02,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:02,262 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:02,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:31:02,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:31:02,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:02,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:31:02,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:03,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:04,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:04,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633669860] [2021-10-06 21:31:04,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633669860] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:31:04,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:31:04,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:31:04,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155050301] [2021-10-06 21:31:04,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:31:04,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:04,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:31:04,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:31:04,174 INFO L87 Difference]: Start difference. First operand 20546 states and 74228 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:31:22,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:22,286 INFO L93 Difference]: Finished difference Result 30506 states and 108292 transitions. [2021-10-06 21:31:22,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-06 21:31:22,291 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) Word has length 47 [2021-10-06 21:31:22,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:22,383 INFO L225 Difference]: With dead ends: 30506 [2021-10-06 21:31:22,384 INFO L226 Difference]: Without dead ends: 30178 [2021-10-06 21:31:22,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1959 ImplicationChecksByTransitivity, 8946.3ms TimeCoverageRelationStatistics Valid=1069, Invalid=6587, Unknown=0, NotChecked=0, Total=7656 [2021-10-06 21:31:22,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30178 states. [2021-10-06 21:31:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30178 to 21002. [2021-10-06 21:31:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21002 states, 21001 states have (on average 3.6004475977334414) internal successors, (75613), 21001 states have internal predecessors, (75613), 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) [2021-10-06 21:31:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21002 states to 21002 states and 75613 transitions. [2021-10-06 21:31:23,073 INFO L78 Accepts]: Start accepts. Automaton has 21002 states and 75613 transitions. Word has length 47 [2021-10-06 21:31:23,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:23,074 INFO L470 AbstractCegarLoop]: Abstraction has 21002 states and 75613 transitions. [2021-10-06 21:31:23,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:31:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 21002 states and 75613 transitions. [2021-10-06 21:31:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:31:23,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:23,114 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:31:23,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:23,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:23,315 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:31:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:23,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1287071421, now seen corresponding path program 29 times [2021-10-06 21:31:23,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:23,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684419247] [2021-10-06 21:31:23,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:31:23,317 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:23,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:23,319 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:23,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:31:24,180 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:31:24,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:24,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:31:24,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:24,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:25,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:25,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684419247] [2021-10-06 21:31:25,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684419247] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:31:25,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:31:25,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-06 21:31:25,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088656606] [2021-10-06 21:31:25,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:31:25,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:25,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:31:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:31:25,225 INFO L87 Difference]: Start difference. First operand 21002 states and 75613 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:31:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:45,664 INFO L93 Difference]: Finished difference Result 40172 states and 143607 transitions. [2021-10-06 21:31:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-10-06 21:31:45,665 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) Word has length 47 [2021-10-06 21:31:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:45,789 INFO L225 Difference]: With dead ends: 40172 [2021-10-06 21:31:45,789 INFO L226 Difference]: Without dead ends: 38364 [2021-10-06 21:31:45,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1918 ImplicationChecksByTransitivity, 9067.0ms TimeCoverageRelationStatistics Valid=1188, Invalid=5454, Unknown=0, NotChecked=0, Total=6642 [2021-10-06 21:31:45,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38364 states. [2021-10-06 21:31:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38364 to 21478. [2021-10-06 21:31:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21478 states, 21477 states have (on average 3.603110304046189) internal successors, (77384), 21477 states have internal predecessors, (77384), 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) [2021-10-06 21:31:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21478 states to 21478 states and 77384 transitions. [2021-10-06 21:31:46,566 INFO L78 Accepts]: Start accepts. Automaton has 21478 states and 77384 transitions. Word has length 47 [2021-10-06 21:31:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:46,566 INFO L470 AbstractCegarLoop]: Abstraction has 21478 states and 77384 transitions. [2021-10-06 21:31:46,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 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) [2021-10-06 21:31:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 21478 states and 77384 transitions. [2021-10-06 21:31:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:31:46,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:46,610 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:31:46,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:46,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:46,811 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:31:46,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:46,812 INFO L82 PathProgramCache]: Analyzing trace with hash 444221611, now seen corresponding path program 30 times [2021-10-06 21:31:46,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:46,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007663259] [2021-10-06 21:31:46,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:31:46,814 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:46,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:46,815 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:46,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 21:31:47,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:31:47,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:47,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:31:47,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:47,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:48,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:48,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007663259] [2021-10-06 21:31:48,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007663259] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:31:48,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:31:48,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:31:48,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879458463] [2021-10-06 21:31:48,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:31:48,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:48,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:31:48,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:31:48,843 INFO L87 Difference]: Start difference. First operand 21478 states and 77384 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:32:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:09,872 INFO L93 Difference]: Finished difference Result 31626 states and 112042 transitions. [2021-10-06 21:32:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-10-06 21:32:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) Word has length 47 [2021-10-06 21:32:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:09,986 INFO L225 Difference]: With dead ends: 31626 [2021-10-06 21:32:09,986 INFO L226 Difference]: Without dead ends: 31356 [2021-10-06 21:32:09,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 11136.7ms TimeCoverageRelationStatistics Valid=987, Invalid=6153, Unknown=0, NotChecked=0, Total=7140 [2021-10-06 21:32:10,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31356 states. [2021-10-06 21:32:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31356 to 21768. [2021-10-06 21:32:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21768 states, 21767 states have (on average 3.6068360362015897) internal successors, (78510), 21767 states have internal predecessors, (78510), 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) [2021-10-06 21:32:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21768 states to 21768 states and 78510 transitions. [2021-10-06 21:32:10,827 INFO L78 Accepts]: Start accepts. Automaton has 21768 states and 78510 transitions. Word has length 47 [2021-10-06 21:32:10,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:10,827 INFO L470 AbstractCegarLoop]: Abstraction has 21768 states and 78510 transitions. [2021-10-06 21:32:10,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:32:10,827 INFO L276 IsEmpty]: Start isEmpty. Operand 21768 states and 78510 transitions. [2021-10-06 21:32:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:32:10,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:10,874 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:32:10,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:11,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:32:11,075 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:32:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:11,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1761441751, now seen corresponding path program 31 times [2021-10-06 21:32:11,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:11,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30710909] [2021-10-06 21:32:11,077 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:32:11,078 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:11,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:11,079 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:32:11,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 21:32:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:32:12,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:32:12,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:12,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:13,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:13,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30710909] [2021-10-06 21:32:13,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30710909] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:32:13,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:32:13,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:32:13,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840768367] [2021-10-06 21:32:13,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:32:13,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:32:13,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:32:13,435 INFO L87 Difference]: Start difference. First operand 21768 states and 78510 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:32:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:42,228 INFO L93 Difference]: Finished difference Result 42420 states and 152386 transitions. [2021-10-06 21:32:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-06 21:32:42,230 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) Word has length 47 [2021-10-06 21:32:42,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:42,385 INFO L225 Difference]: With dead ends: 42420 [2021-10-06 21:32:42,385 INFO L226 Difference]: Without dead ends: 40774 [2021-10-06 21:32:42,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2752 ImplicationChecksByTransitivity, 13966.7ms TimeCoverageRelationStatistics Valid=1350, Invalid=8750, Unknown=0, NotChecked=0, Total=10100 [2021-10-06 21:32:42,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40774 states. [2021-10-06 21:32:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40774 to 22412. [2021-10-06 21:32:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22412 states, 22411 states have (on average 3.6113961893712907) internal successors, (80935), 22411 states have internal predecessors, (80935), 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) [2021-10-06 21:32:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22412 states to 22412 states and 80935 transitions. [2021-10-06 21:32:43,279 INFO L78 Accepts]: Start accepts. Automaton has 22412 states and 80935 transitions. Word has length 47 [2021-10-06 21:32:43,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:43,280 INFO L470 AbstractCegarLoop]: Abstraction has 22412 states and 80935 transitions. [2021-10-06 21:32:43,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:32:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand 22412 states and 80935 transitions. [2021-10-06 21:32:43,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:32:43,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:43,327 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:32:43,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:43,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:32:43,528 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:32:43,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:43,529 INFO L82 PathProgramCache]: Analyzing trace with hash 651233671, now seen corresponding path program 32 times [2021-10-06 21:32:43,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:43,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959110944] [2021-10-06 21:32:43,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:32:43,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:43,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:43,532 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:32:43,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 21:32:44,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:32:44,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:44,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:32:44,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:44,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:45,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:45,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959110944] [2021-10-06 21:32:45,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959110944] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:32:45,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:32:45,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:32:45,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421729854] [2021-10-06 21:32:45,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:32:45,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:45,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:32:45,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:32:45,889 INFO L87 Difference]: Start difference. First operand 22412 states and 80935 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:33:14,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:14,793 INFO L93 Difference]: Finished difference Result 40126 states and 142796 transitions. [2021-10-06 21:33:14,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-06 21:33:14,794 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) Word has length 47 [2021-10-06 21:33:14,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:14,920 INFO L225 Difference]: With dead ends: 40126 [2021-10-06 21:33:14,920 INFO L226 Difference]: Without dead ends: 38524 [2021-10-06 21:33:14,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3545 ImplicationChecksByTransitivity, 14594.5ms TimeCoverageRelationStatistics Valid=1554, Invalid=10656, Unknown=0, NotChecked=0, Total=12210 [2021-10-06 21:33:14,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38524 states. [2021-10-06 21:33:15,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38524 to 22356. [2021-10-06 21:33:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22356 states, 22355 states have (on average 3.6140908074256317) internal successors, (80793), 22355 states have internal predecessors, (80793), 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) [2021-10-06 21:33:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22356 states to 22356 states and 80793 transitions. [2021-10-06 21:33:15,709 INFO L78 Accepts]: Start accepts. Automaton has 22356 states and 80793 transitions. Word has length 47 [2021-10-06 21:33:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:15,710 INFO L470 AbstractCegarLoop]: Abstraction has 22356 states and 80793 transitions. [2021-10-06 21:33:15,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:33:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 22356 states and 80793 transitions. [2021-10-06 21:33:15,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:33:15,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:15,757 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:33:15,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-06 21:33:15,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:33:15,958 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:33:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:15,959 INFO L82 PathProgramCache]: Analyzing trace with hash -974576693, now seen corresponding path program 33 times [2021-10-06 21:33:15,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:15,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147987901] [2021-10-06 21:33:15,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:33:15,960 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:15,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:15,962 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:33:15,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:33:16,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:33:16,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:16,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:33:16,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:17,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:17,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:17,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147987901] [2021-10-06 21:33:17,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147987901] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:33:17,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:33:17,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-06 21:33:17,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696586918] [2021-10-06 21:33:17,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:33:17,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:17,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:33:17,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:33:17,979 INFO L87 Difference]: Start difference. First operand 22356 states and 80793 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 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) [2021-10-06 21:33:29,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:29,242 INFO L93 Difference]: Finished difference Result 30050 states and 106451 transitions. [2021-10-06 21:33:29,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:33:29,243 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 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) Word has length 47 [2021-10-06 21:33:29,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:29,349 INFO L225 Difference]: With dead ends: 30050 [2021-10-06 21:33:29,349 INFO L226 Difference]: Without dead ends: 29116 [2021-10-06 21:33:29,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 6300.0ms TimeCoverageRelationStatistics Valid=663, Invalid=2759, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:33:29,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29116 states. [2021-10-06 21:33:29,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29116 to 22174. [2021-10-06 21:33:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22174 states, 22173 states have (on average 3.6010463175934695) internal successors, (79846), 22173 states have internal predecessors, (79846), 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) [2021-10-06 21:33:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22174 states to 22174 states and 79846 transitions. [2021-10-06 21:33:30,093 INFO L78 Accepts]: Start accepts. Automaton has 22174 states and 79846 transitions. Word has length 47 [2021-10-06 21:33:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:30,093 INFO L470 AbstractCegarLoop]: Abstraction has 22174 states and 79846 transitions. [2021-10-06 21:33:30,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 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) [2021-10-06 21:33:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 22174 states and 79846 transitions. [2021-10-06 21:33:30,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:33:30,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:30,145 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:33:30,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:30,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:33:30,346 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:33:30,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:30,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1688997591, now seen corresponding path program 34 times [2021-10-06 21:33:30,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:30,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957944778] [2021-10-06 21:33:30,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:33:30,349 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:30,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:30,350 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:33:30,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:33:31,259 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:33:31,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:31,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:33:31,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:31,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:32,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:32,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957944778] [2021-10-06 21:33:32,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957944778] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:33:32,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:33:32,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:33:32,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672498406] [2021-10-06 21:33:32,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:33:32,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:33:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:33:32,601 INFO L87 Difference]: Start difference. First operand 22174 states and 79846 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:33:43,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:43,400 INFO L93 Difference]: Finished difference Result 26422 states and 91901 transitions. [2021-10-06 21:33:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 21:33:43,401 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) Word has length 47 [2021-10-06 21:33:43,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:43,479 INFO L225 Difference]: With dead ends: 26422 [2021-10-06 21:33:43,479 INFO L226 Difference]: Without dead ends: 26158 [2021-10-06 21:33:43,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 6107.5ms TimeCoverageRelationStatistics Valid=684, Invalid=3738, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:33:43,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26158 states. [2021-10-06 21:33:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26158 to 22470. [2021-10-06 21:33:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22470 states, 22469 states have (on average 3.5930392985891673) internal successors, (80732), 22469 states have internal predecessors, (80732), 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) [2021-10-06 21:33:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22470 states to 22470 states and 80732 transitions. [2021-10-06 21:33:43,969 INFO L78 Accepts]: Start accepts. Automaton has 22470 states and 80732 transitions. Word has length 47 [2021-10-06 21:33:43,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:43,969 INFO L470 AbstractCegarLoop]: Abstraction has 22470 states and 80732 transitions. [2021-10-06 21:33:43,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:33:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 22470 states and 80732 transitions. [2021-10-06 21:33:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:33:44,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:44,160 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:33:44,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:44,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:33:44,367 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:33:44,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:44,368 INFO L82 PathProgramCache]: Analyzing trace with hash -74839181, now seen corresponding path program 35 times [2021-10-06 21:33:44,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:44,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68705522] [2021-10-06 21:33:44,369 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:33:44,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:44,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:44,370 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:33:44,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:33:45,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:33:45,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:45,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:33:45,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:45,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:45,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:45,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68705522] [2021-10-06 21:33:45,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68705522] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:33:45,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:33:45,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-06 21:33:45,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287640529] [2021-10-06 21:33:45,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:33:45,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:45,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:33:45,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:33:45,941 INFO L87 Difference]: Start difference. First operand 22470 states and 80732 transitions. Second operand has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 18 states have internal predecessors, (68), 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) [2021-10-06 21:33:53,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:53,287 INFO L93 Difference]: Finished difference Result 29086 states and 103078 transitions. [2021-10-06 21:33:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:33:53,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 18 states have internal predecessors, (68), 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) Word has length 47 [2021-10-06 21:33:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:53,605 INFO L225 Difference]: With dead ends: 29086 [2021-10-06 21:33:53,606 INFO L226 Difference]: Without dead ends: 27500 [2021-10-06 21:33:53,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 3130.7ms TimeCoverageRelationStatistics Valid=524, Invalid=1828, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:33:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27500 states. [2021-10-06 21:33:54,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27500 to 22260. [2021-10-06 21:33:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22260 states, 22259 states have (on average 3.5953097623433217) internal successors, (80028), 22259 states have internal predecessors, (80028), 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) [2021-10-06 21:33:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22260 states to 22260 states and 80028 transitions. [2021-10-06 21:33:54,177 INFO L78 Accepts]: Start accepts. Automaton has 22260 states and 80028 transitions. Word has length 47 [2021-10-06 21:33:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:54,177 INFO L470 AbstractCegarLoop]: Abstraction has 22260 states and 80028 transitions. [2021-10-06 21:33:54,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 18 states have internal predecessors, (68), 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) [2021-10-06 21:33:54,177 INFO L276 IsEmpty]: Start isEmpty. Operand 22260 states and 80028 transitions. [2021-10-06 21:33:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:33:54,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:54,425 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:33:54,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:54,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:33:54,627 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:33:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:54,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1707157157, now seen corresponding path program 36 times [2021-10-06 21:33:54,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:54,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651349053] [2021-10-06 21:33:54,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:33:54,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:54,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:54,630 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:33:54,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:33:55,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:33:55,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:55,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:33:55,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:55,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:56,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:56,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651349053] [2021-10-06 21:33:56,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651349053] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:33:56,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:33:56,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-06 21:33:56,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544778816] [2021-10-06 21:33:56,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:33:56,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:56,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:33:56,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:33:56,409 INFO L87 Difference]: Start difference. First operand 22260 states and 80028 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 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) [2021-10-06 21:34:06,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:06,875 INFO L93 Difference]: Finished difference Result 28016 states and 97478 transitions. [2021-10-06 21:34:06,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:34:06,876 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 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) Word has length 47 [2021-10-06 21:34:06,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:07,147 INFO L225 Difference]: With dead ends: 28016 [2021-10-06 21:34:07,148 INFO L226 Difference]: Without dead ends: 27764 [2021-10-06 21:34:07,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 4758.6ms TimeCoverageRelationStatistics Valid=683, Invalid=3099, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 21:34:07,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27764 states. [2021-10-06 21:34:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27764 to 22256. [2021-10-06 21:34:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22256 states, 22255 states have (on average 3.5957312963379016) internal successors, (80023), 22255 states have internal predecessors, (80023), 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) [2021-10-06 21:34:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22256 states to 22256 states and 80023 transitions. [2021-10-06 21:34:07,675 INFO L78 Accepts]: Start accepts. Automaton has 22256 states and 80023 transitions. Word has length 47 [2021-10-06 21:34:07,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:07,675 INFO L470 AbstractCegarLoop]: Abstraction has 22256 states and 80023 transitions. [2021-10-06 21:34:07,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 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) [2021-10-06 21:34:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 22256 states and 80023 transitions. [2021-10-06 21:34:07,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:34:07,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:07,864 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:34:07,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-06 21:34:08,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:34:08,065 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:34:08,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:08,066 INFO L82 PathProgramCache]: Analyzing trace with hash 956417127, now seen corresponding path program 37 times [2021-10-06 21:34:08,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:08,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824610477] [2021-10-06 21:34:08,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:34:08,067 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:08,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:08,068 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:34:08,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:34:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:08,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:34:08,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:09,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:10,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:10,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824610477] [2021-10-06 21:34:10,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824610477] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:10,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:10,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:34:10,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719705922] [2021-10-06 21:34:10,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:34:10,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:10,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:34:10,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:34:10,160 INFO L87 Difference]: Start difference. First operand 22256 states and 80023 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:34:22,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:22,103 INFO L93 Difference]: Finished difference Result 26002 states and 90481 transitions. [2021-10-06 21:34:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-06 21:34:22,104 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) Word has length 47 [2021-10-06 21:34:22,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:22,187 INFO L225 Difference]: With dead ends: 26002 [2021-10-06 21:34:22,188 INFO L226 Difference]: Without dead ends: 25808 [2021-10-06 21:34:22,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 6385.7ms TimeCoverageRelationStatistics Valid=851, Invalid=5001, Unknown=0, NotChecked=0, Total=5852 [2021-10-06 21:34:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25808 states. [2021-10-06 21:34:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25808 to 22248. [2021-10-06 21:34:22,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22248 states, 22247 states have (on average 3.596215220029667) internal successors, (80005), 22247 states have internal predecessors, (80005), 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) [2021-10-06 21:34:22,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22248 states to 22248 states and 80005 transitions. [2021-10-06 21:34:22,983 INFO L78 Accepts]: Start accepts. Automaton has 22248 states and 80005 transitions. Word has length 47 [2021-10-06 21:34:22,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:22,983 INFO L470 AbstractCegarLoop]: Abstraction has 22248 states and 80005 transitions. [2021-10-06 21:34:22,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 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) [2021-10-06 21:34:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand 22248 states and 80005 transitions. [2021-10-06 21:34:23,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:34:23,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:23,034 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:34:23,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-06 21:34:23,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:34:23,235 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:34:23,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:23,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1990095445, now seen corresponding path program 38 times [2021-10-06 21:34:23,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:23,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986858503] [2021-10-06 21:34:23,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:34:23,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:23,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:23,238 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:34:23,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:34:24,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:34:24,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:24,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:34:24,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:24,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:25,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:25,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986858503] [2021-10-06 21:34:25,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986858503] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:34:25,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:34:25,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:34:25,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804200468] [2021-10-06 21:34:25,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:34:25,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:34:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:34:25,386 INFO L87 Difference]: Start difference. First operand 22248 states and 80005 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:34:59,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:59,440 INFO L93 Difference]: Finished difference Result 38090 states and 131357 transitions. [2021-10-06 21:34:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-10-06 21:34:59,441 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) Word has length 47 [2021-10-06 21:34:59,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:59,748 INFO L225 Difference]: With dead ends: 38090 [2021-10-06 21:34:59,749 INFO L226 Difference]: Without dead ends: 37822 [2021-10-06 21:34:59,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4561 ImplicationChecksByTransitivity, 18013.0ms TimeCoverageRelationStatistics Valid=1833, Invalid=12447, Unknown=0, NotChecked=0, Total=14280 [2021-10-06 21:34:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37822 states. [2021-10-06 21:35:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37822 to 22494. [2021-10-06 21:35:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22494 states, 22493 states have (on average 3.593562441648513) internal successors, (80830), 22493 states have internal predecessors, (80830), 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) [2021-10-06 21:35:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22494 states to 22494 states and 80830 transitions. [2021-10-06 21:35:00,642 INFO L78 Accepts]: Start accepts. Automaton has 22494 states and 80830 transitions. Word has length 47 [2021-10-06 21:35:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:00,643 INFO L470 AbstractCegarLoop]: Abstraction has 22494 states and 80830 transitions. [2021-10-06 21:35:00,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) [2021-10-06 21:35:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 22494 states and 80830 transitions. [2021-10-06 21:35:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-06 21:35:00,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:00,703 INFO L512 BasicCegarLoop]: 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] [2021-10-06 21:35:00,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:00,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:00,912 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-06 21:35:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:00,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1494580349, now seen corresponding path program 39 times [2021-10-06 21:35:00,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:00,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119810385] [2021-10-06 21:35:00,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:35:00,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:00,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:00,916 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:00,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:35:01,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:35:01,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:01,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:35:01,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:02,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:03,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:03,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119810385] [2021-10-06 21:35:03,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119810385] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:35:03,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:35:03,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-06 21:35:03,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862687511] [2021-10-06 21:35:03,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-06 21:35:03,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:03,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-06 21:35:03,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:35:03,240 INFO L87 Difference]: Start difference. First operand 22494 states and 80830 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 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) Received shutdown request... [2021-10-06 21:35:43,305 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/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 [2021-10-06 21:35:43,305 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:35:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 21:35:43,497 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:35:43,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:43,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:43,698 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. [2021-10-06 21:35:43,701 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:35:43,701 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:35:43,701 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:35:43,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:35:43,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:35:43,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:35:43,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:35:43,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:35:43,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:35:43,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:35:43,703 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:35:43,703 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:35:43,703 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-06 21:35:43,703 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-06 21:35:43,703 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-06 21:35:43,703 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-06 21:35:43,704 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-06 21:35:43,704 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-06 21:35:43,704 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-06 21:35:43,704 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-06 21:35:43,705 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:35:43,705 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:35:43,705 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:35:43,705 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:35:43,705 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-06 21:35:43,705 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4INUSE_VIOLATION [2021-10-06 21:35:43,710 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:35:43,710 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:35:43,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:35:43 BasicIcfg [2021-10-06 21:35:43,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:35:43,714 INFO L168 Benchmark]: Toolchain (without parser) took 779471.29 ms. Allocated memory was 176.2 MB in the beginning and 7.9 GB in the end (delta: 7.8 GB). Free memory was 149.6 MB in the beginning and 4.6 GB in the end (delta: -4.5 GB). Peak memory consumption was 3.3 GB. Max. memory is 8.0 GB. [2021-10-06 21:35:43,714 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 176.2 MB. Free memory was 146.0 MB in the beginning and 146.0 MB in the end (delta: 86.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:35:43,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.21 ms. Allocated memory is still 176.2 MB. Free memory was 149.3 MB in the beginning and 137.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:35:43,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.62 ms. Allocated memory is still 176.2 MB. Free memory was 137.3 MB in the beginning and 135.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:35:43,715 INFO L168 Benchmark]: Boogie Preprocessor took 43.11 ms. Allocated memory is still 176.2 MB. Free memory was 135.1 MB in the beginning and 133.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:35:43,716 INFO L168 Benchmark]: RCFGBuilder took 877.00 ms. Allocated memory is still 176.2 MB. Free memory was 133.5 MB in the beginning and 147.5 MB in the end (delta: -14.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:35:43,716 INFO L168 Benchmark]: TraceAbstraction took 778146.65 ms. Allocated memory was 176.2 MB in the beginning and 7.9 GB in the end (delta: 7.8 GB). Free memory was 147.0 MB in the beginning and 4.6 GB in the end (delta: -4.5 GB). Peak memory consumption was 3.3 GB. Max. memory is 8.0 GB. [2021-10-06 21:35:43,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 176.2 MB. Free memory was 146.0 MB in the beginning and 146.0 MB in the end (delta: 86.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 332.21 ms. Allocated memory is still 176.2 MB. Free memory was 149.3 MB in the beginning and 137.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 59.62 ms. Allocated memory is still 176.2 MB. Free memory was 137.3 MB in the beginning and 135.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.11 ms. Allocated memory is still 176.2 MB. Free memory was 135.1 MB in the beginning and 133.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 877.00 ms. Allocated memory is still 176.2 MB. Free memory was 133.5 MB in the beginning and 147.5 MB in the end (delta: -14.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 778146.65 ms. Allocated memory was 176.2 MB in the beginning and 7.9 GB in the end (delta: 7.8 GB). Free memory was 147.0 MB in the beginning and 4.6 GB in the end (delta: -4.5 GB). Peak memory consumption was 3.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23994.3ms, 214 PlacesBefore, 90 PlacesAfterwards, 205 TransitionsBefore, 75 TransitionsAfterwards, 7588 CoEnabledTransitionPairs, 9 FixpointIterations, 83 TrivialSequentialCompositions, 89 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 7 ConcurrentYvCompositions, 6 ChoiceCompositions, 186 TotalNumberOfCompositions, 26033 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12815, positive: 12405, positive conditional: 0, positive unconditional: 12405, negative: 410, negative conditional: 0, negative unconditional: 410, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5011, positive: 4926, positive conditional: 0, positive unconditional: 4926, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5011, positive: 4876, positive conditional: 0, positive unconditional: 4876, negative: 135, negative conditional: 0, negative unconditional: 135, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 135, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 467, positive: 69, positive conditional: 0, positive unconditional: 69, negative: 399, negative conditional: 0, negative unconditional: 399, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12815, positive: 7479, positive conditional: 0, positive unconditional: 7479, negative: 325, negative conditional: 0, negative unconditional: 325, unknown: 5011, unknown conditional: 0, unknown unconditional: 5011] , Statistics on independence cache: Total cache size (in pairs): 722, Positive cache size: 680, Positive conditional cache size: 0, Positive unconditional cache size: 680, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 125]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 125]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 125]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (22494states) and FLOYD_HOARE automaton (currently 63 states, 27 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 80 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 270 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 777971.2ms, OverallIterations: 50, TraceHistogramMax: 1, EmptinessCheckTime: 3763.8ms, AutomataDifference: 605069.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27028.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9809 SDtfs, 43173 SDslu, 114788 SDs, 0 SdLazy, 124732 SolverSat, 10207 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 278049.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5455 GetRequests, 2876 SyntacticMatches, 5 SemanticMatches, 2573 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50326 ImplicationChecksByTransitivity, 290159.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=49763occurred in iteration=0, InterpolantAutomatonStates: 2273, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 60067.5ms AutomataMinimizationTime, 49 MinimizatonAttempts, 329894 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 705.3ms SsaConstructionTime, 4087.2ms SatisfiabilityAnalysisTime, 49542.8ms InterpolantComputationTime, 1904 NumberOfCodeBlocks, 1904 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 3708 ConstructedInterpolants, 24 QuantifiedInterpolants, 19068 SizeOfPredicates, 441 NumberOfNonLiveVariables, 7493 ConjunctsInSsa, 621 ConjunctsInUnsatCore, 100 InterpolantComputations, 100 PerfectInterpolantSequences, 0/0 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