/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-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 20:39:03,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 20:39:03,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 20:39:03,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 20:39:03,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 20:39:03,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 20:39:03,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 20:39:03,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 20:39:03,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 20:39:03,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 20:39:03,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 20:39:03,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 20:39:03,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 20:39:03,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 20:39:03,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 20:39:03,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 20:39:03,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 20:39:03,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 20:39:03,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 20:39:03,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 20:39:03,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 20:39:03,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 20:39:03,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 20:39:03,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 20:39:03,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 20:39:03,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 20:39:03,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 20:39:03,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 20:39:03,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 20:39:03,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 20:39:03,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 20:39:03,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 20:39:03,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 20:39:03,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 20:39:03,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 20:39:03,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 20:39:03,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 20:39:03,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 20:39:03,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 20:39:03,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 20:39:03,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 20:39:03,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 20:39:03,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 20:39:03,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 20:39:03,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 20:39:03,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 20:39:03,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 20:39:03,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 20:39:03,595 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 20:39:03,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 20:39:03,595 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 20:39:03,595 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 20:39:03,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 20:39:03,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 20:39:03,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 20:39:03,597 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 20:39:03,598 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 20:39:03,598 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 20:39:03,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 20:39:03,598 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 20:39:03,599 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 20:39:03,599 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 20:39:03,599 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 20:39:03,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 20:39:03,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 20:39:03,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 20:39:03,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 20:39:03,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:39:03,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 20:39:03,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 20:39:03,601 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 20:39:03,601 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 20:39:03,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 20:39:03,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 20:39:03,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 20:39:04,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 20:39:04,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 20:39:04,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 20:39:04,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 20:39:04,079 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 20:39:04,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2021-10-13 20:39:04,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79204b272/ea6ac6d99a35481dab20a34f4b2b8c7d/FLAGe36cb9682 [2021-10-13 20:39:04,910 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 20:39:04,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2021-10-13 20:39:04,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79204b272/ea6ac6d99a35481dab20a34f4b2b8c7d/FLAGe36cb9682 [2021-10-13 20:39:05,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79204b272/ea6ac6d99a35481dab20a34f4b2b8c7d [2021-10-13 20:39:05,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 20:39:05,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 20:39:05,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 20:39:05,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 20:39:05,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 20:39:05,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25cd6347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05, skipping insertion in model container [2021-10-13 20:39:05,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 20:39:05,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 20:39:05,578 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-3.wvr.c[2529,2542] [2021-10-13 20:39:05,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:39:05,596 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 20:39:05,624 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-3.wvr.c[2529,2542] [2021-10-13 20:39:05,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:39:05,645 INFO L208 MainTranslator]: Completed translation [2021-10-13 20:39:05,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05 WrapperNode [2021-10-13 20:39:05,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 20:39:05,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 20:39:05,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 20:39:05,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 20:39:05,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 20:39:05,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 20:39:05,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 20:39:05,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 20:39:05,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 20:39:05,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 20:39:05,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 20:39:05,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 20:39:05,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05" (1/1) ... [2021-10-13 20:39:05,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:39:05,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 20:39:05,777 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) [2021-10-13 20:39:05,799 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 [2021-10-13 20:39:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 20:39:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 20:39:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 20:39:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 20:39:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 20:39:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 20:39:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 20:39:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 20:39:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 20:39:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 20:39:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 20:39:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 20:39:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 20:39:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 20:39:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 20:39:05,858 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 20:39:06,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 20:39:06,550 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-13 20:39:06,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:39:06 BoogieIcfgContainer [2021-10-13 20:39:06,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 20:39:06,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 20:39:06,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 20:39:06,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 20:39:06,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:39:05" (1/3) ... [2021-10-13 20:39:06,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c0c9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:39:06, skipping insertion in model container [2021-10-13 20:39:06,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:05" (2/3) ... [2021-10-13 20:39:06,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c0c9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:39:06, skipping insertion in model container [2021-10-13 20:39:06,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:39:06" (3/3) ... [2021-10-13 20:39:06,563 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2021-10-13 20:39:06,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 20:39:06,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-13 20:39:06,570 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 20:39:06,609 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,611 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,611 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,611 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,612 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,612 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,612 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,612 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,613 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,613 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,613 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,613 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,616 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,616 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,616 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,617 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,617 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,617 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,617 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,618 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,618 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,618 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,618 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,619 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,619 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,619 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,620 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,620 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,620 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,620 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,620 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,621 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,621 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,621 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,621 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,622 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,622 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,623 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,623 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,623 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,624 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,624 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,624 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,624 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,624 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,625 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,625 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,625 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,626 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,626 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,626 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,627 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,627 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,627 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,627 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,628 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,628 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,628 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,628 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,629 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,633 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,633 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,633 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,634 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,637 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,638 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,641 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,641 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,641 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,642 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,642 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,642 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:39:06,650 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-13 20:39:06,708 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 20:39:06,717 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 [2021-10-13 20:39:06,718 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-13 20:39:06,738 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 20:39:06,752 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 142 transitions, 308 flow [2021-10-13 20:39:06,756 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 142 transitions, 308 flow [2021-10-13 20:39:06,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 142 transitions, 308 flow [2021-10-13 20:39:06,836 INFO L129 PetriNetUnfolder]: 5/139 cut-off events. [2021-10-13 20:39:06,836 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-13 20:39:06,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 5/139 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2021-10-13 20:39:06,855 INFO L116 LiptonReduction]: Number of co-enabled transitions 2512 [2021-10-13 20:39:19,299 INFO L131 LiptonReduction]: Checked pairs total: 8051 [2021-10-13 20:39:19,299 INFO L133 LiptonReduction]: Total number of compositions: 153 [2021-10-13 20:39:19,310 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 49 transitions, 122 flow [2021-10-13 20:39:19,397 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1379 states, 1365 states have (on average 3.536263736263736) internal successors, (4827), 1378 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:19,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 1379 states, 1365 states have (on average 3.536263736263736) internal successors, (4827), 1378 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-13 20:39:19,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:19,412 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-13 20:39:19,412 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:19,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:19,419 INFO L82 PathProgramCache]: Analyzing trace with hash 548, now seen corresponding path program 1 times [2021-10-13 20:39:19,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:19,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045064067] [2021-10-13 20:39:19,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:39:19,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:19,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:19,437 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) [2021-10-13 20:39:19,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 20:39:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:39:19,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 20:39:19,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:19,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:19,521 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:19,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045064067] [2021-10-13 20:39:19,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045064067] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:19,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:19,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-13 20:39:19,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313162208] [2021-10-13 20:39:19,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 20:39:19,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:19,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 20:39:19,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 20:39:19,554 INFO L87 Difference]: Start difference. First operand has 1379 states, 1365 states have (on average 3.536263736263736) internal successors, (4827), 1378 states have internal predecessors, (4827), 0 states have call successors, (0), 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) [2021-10-13 20:39:19,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:19,650 INFO L93 Difference]: Finished difference Result 1376 states and 4236 transitions. [2021-10-13 20:39:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 20:39:19,651 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 [2021-10-13 20:39:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:19,702 INFO L225 Difference]: With dead ends: 1376 [2021-10-13 20:39:19,702 INFO L226 Difference]: Without dead ends: 1376 [2021-10-13 20:39:19,704 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 [2021-10-13 20:39:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-10-13 20:39:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2021-10-13 20:39:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1365 states have (on average 3.1032967032967034) internal successors, (4236), 1375 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4236 transitions. [2021-10-13 20:39:19,883 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 4236 transitions. Word has length 1 [2021-10-13 20:39:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:19,883 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 4236 transitions. [2021-10-13 20:39:19,883 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) [2021-10-13 20:39:19,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 4236 transitions. [2021-10-13 20:39:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 20:39:19,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:19,884 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 20:39:19,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:20,098 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 [2021-10-13 20:39:20,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:20,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:20,100 INFO L82 PathProgramCache]: Analyzing trace with hash 537339, now seen corresponding path program 1 times [2021-10-13 20:39:20,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:20,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592325640] [2021-10-13 20:39:20,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:39:20,102 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:20,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:20,104 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) [2021-10-13 20:39:20,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 20:39:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:39:20,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:39:20,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:20,522 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-13 20:39:20,523 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 4 case distinctions, treesize of input 34 treesize of output 64 [2021-10-13 20:39:20,545 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 66 treesize of output 64 [2021-10-13 20:39:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:20,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:20,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:20,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592325640] [2021-10-13 20:39:20,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592325640] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:20,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:20,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:39:20,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020863929] [2021-10-13 20:39:20,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:39:20,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:20,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:39:20,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:39:20,877 INFO L87 Difference]: Start difference. First operand 1376 states and 4236 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) [2021-10-13 20:39:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:20,970 INFO L93 Difference]: Finished difference Result 1333 states and 4127 transitions. [2021-10-13 20:39:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:39:20,973 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 [2021-10-13 20:39:20,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:20,987 INFO L225 Difference]: With dead ends: 1333 [2021-10-13 20:39:20,987 INFO L226 Difference]: Without dead ends: 1333 [2021-10-13 20:39:20,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:39:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-10-13 20:39:21,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1333. [2021-10-13 20:39:21,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1324 states have (on average 3.117069486404834) internal successors, (4127), 1332 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 4127 transitions. [2021-10-13 20:39:21,054 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 4127 transitions. Word has length 3 [2021-10-13 20:39:21,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:21,055 INFO L470 AbstractCegarLoop]: Abstraction has 1333 states and 4127 transitions. [2021-10-13 20:39:21,056 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) [2021-10-13 20:39:21,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 4127 transitions. [2021-10-13 20:39:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 20:39:21,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:21,057 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 20:39:21,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:21,271 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 [2021-10-13 20:39:21,271 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:21,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:21,272 INFO L82 PathProgramCache]: Analyzing trace with hash 537337, now seen corresponding path program 1 times [2021-10-13 20:39:21,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:21,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901471488] [2021-10-13 20:39:21,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:39:21,274 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:21,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:21,276 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) [2021-10-13 20:39:21,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 20:39:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:39:21,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:39:21,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:21,392 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:39:21,392 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-13 20:39:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:21,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:21,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:21,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901471488] [2021-10-13 20:39:21,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901471488] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:21,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:21,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:39:21,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607392068] [2021-10-13 20:39:21,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:39:21,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:21,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:39:21,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:39:21,439 INFO L87 Difference]: Start difference. First operand 1333 states and 4127 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:21,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:21,485 INFO L93 Difference]: Finished difference Result 1290 states and 4018 transitions. [2021-10-13 20:39:21,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:39:21,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 [2021-10-13 20:39:21,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:21,499 INFO L225 Difference]: With dead ends: 1290 [2021-10-13 20:39:21,500 INFO L226 Difference]: Without dead ends: 1290 [2021-10-13 20:39:21,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:39:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-10-13 20:39:21,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1290. [2021-10-13 20:39:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1283 states have (on average 3.131722525331255) internal successors, (4018), 1289 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 4018 transitions. [2021-10-13 20:39:21,598 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 4018 transitions. Word has length 3 [2021-10-13 20:39:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:21,599 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 4018 transitions. [2021-10-13 20:39:21,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 4018 transitions. [2021-10-13 20:39:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:39:21,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:21,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:39:21,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:21,813 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 [2021-10-13 20:39:21,813 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:21,816 INFO L82 PathProgramCache]: Analyzing trace with hash 516393422, now seen corresponding path program 1 times [2021-10-13 20:39:21,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:21,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395005899] [2021-10-13 20:39:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:39:21,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:21,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:21,821 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) [2021-10-13 20:39:21,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 20:39:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:39:21,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:39:21,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:22,065 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-13 20:39:22,066 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-13 20:39:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:22,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:22,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:22,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395005899] [2021-10-13 20:39:22,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395005899] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:22,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:22,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:39:22,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834204601] [2021-10-13 20:39:22,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:39:22,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:22,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:39:22,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:39:22,240 INFO L87 Difference]: Start difference. First operand 1290 states and 4018 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) [2021-10-13 20:39:22,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:22,287 INFO L93 Difference]: Finished difference Result 1242 states and 3894 transitions. [2021-10-13 20:39:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:39:22,287 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 [2021-10-13 20:39:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:22,299 INFO L225 Difference]: With dead ends: 1242 [2021-10-13 20:39:22,299 INFO L226 Difference]: Without dead ends: 1242 [2021-10-13 20:39:22,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:39:22,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-10-13 20:39:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1242. [2021-10-13 20:39:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1237 states have (on average 3.1479385610347617) internal successors, (3894), 1241 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3894 transitions. [2021-10-13 20:39:22,354 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3894 transitions. Word has length 5 [2021-10-13 20:39:22,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:22,355 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 3894 transitions. [2021-10-13 20:39:22,356 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) [2021-10-13 20:39:22,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3894 transitions. [2021-10-13 20:39:22,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:39:22,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:22,356 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:39:22,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:22,568 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 [2021-10-13 20:39:22,569 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:22,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:22,570 INFO L82 PathProgramCache]: Analyzing trace with hash 516393423, now seen corresponding path program 1 times [2021-10-13 20:39:22,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:22,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077994154] [2021-10-13 20:39:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:39:22,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:22,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:22,572 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) [2021-10-13 20:39:22,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 20:39:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:39:22,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:39:22,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:22,664 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:39:22,664 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-13 20:39:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:22,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:22,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:22,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077994154] [2021-10-13 20:39:22,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077994154] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:22,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:22,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:39:22,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967868939] [2021-10-13 20:39:22,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:39:22,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:39:22,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:39:22,719 INFO L87 Difference]: Start difference. First operand 1242 states and 3894 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:22,761 INFO L93 Difference]: Finished difference Result 1194 states and 3770 transitions. [2021-10-13 20:39:22,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:39:22,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 [2021-10-13 20:39:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:22,774 INFO L225 Difference]: With dead ends: 1194 [2021-10-13 20:39:22,775 INFO L226 Difference]: Without dead ends: 1194 [2021-10-13 20:39:22,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:39:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-10-13 20:39:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2021-10-13 20:39:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1191 states have (on average 3.165407220822838) internal successors, (3770), 1193 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 3770 transitions. [2021-10-13 20:39:22,833 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 3770 transitions. Word has length 5 [2021-10-13 20:39:22,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:22,834 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 3770 transitions. [2021-10-13 20:39:22,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:22,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 3770 transitions. [2021-10-13 20:39:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 20:39:22,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:22,835 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:39:22,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:23,048 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 [2021-10-13 20:39:23,049 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:23,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1962114165, now seen corresponding path program 1 times [2021-10-13 20:39:23,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:23,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203482224] [2021-10-13 20:39:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:39:23,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:23,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:23,052 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) [2021-10-13 20:39:23,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 20:39:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:39:23,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:39:23,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:23,169 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-13 20:39:23,170 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 3 case distinctions, treesize of input 26 treesize of output 33 [2021-10-13 20:39:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:23,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:23,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:23,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203482224] [2021-10-13 20:39:23,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203482224] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:23,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:23,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:39:23,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558070476] [2021-10-13 20:39:23,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:39:23,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:23,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:39:23,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:39:23,355 INFO L87 Difference]: Start difference. First operand 1194 states and 3770 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) [2021-10-13 20:39:23,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:23,397 INFO L93 Difference]: Finished difference Result 942 states and 2882 transitions. [2021-10-13 20:39:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:39:23,398 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 [2021-10-13 20:39:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:23,407 INFO L225 Difference]: With dead ends: 942 [2021-10-13 20:39:23,407 INFO L226 Difference]: Without dead ends: 942 [2021-10-13 20:39:23,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:39:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-10-13 20:39:23,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 942. [2021-10-13 20:39:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 3.0659574468085107) internal successors, (2882), 941 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:23,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2882 transitions. [2021-10-13 20:39:23,457 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2882 transitions. Word has length 7 [2021-10-13 20:39:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:23,458 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2882 transitions. [2021-10-13 20:39:23,458 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) [2021-10-13 20:39:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2882 transitions. [2021-10-13 20:39:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 20:39:23,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:23,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:39:23,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:23,672 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 [2021-10-13 20:39:23,672 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:23,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1962114164, now seen corresponding path program 1 times [2021-10-13 20:39:23,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:23,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577606422] [2021-10-13 20:39:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:39:23,674 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:23,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:23,675 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) [2021-10-13 20:39:23,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 20:39:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:39:23,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:39:23,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:23,935 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-13 20:39:23,936 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 4 case distinctions, treesize of input 31 treesize of output 61 [2021-10-13 20:39:23,943 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 62 treesize of output 60 [2021-10-13 20:39:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:24,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:24,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:24,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577606422] [2021-10-13 20:39:24,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577606422] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:24,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:24,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:39:24,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933066542] [2021-10-13 20:39:24,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:39:24,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:39:24,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:39:24,237 INFO L87 Difference]: Start difference. First operand 942 states and 2882 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) [2021-10-13 20:39:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:24,265 INFO L93 Difference]: Finished difference Result 690 states and 1994 transitions. [2021-10-13 20:39:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:39:24,266 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 [2021-10-13 20:39:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:24,272 INFO L225 Difference]: With dead ends: 690 [2021-10-13 20:39:24,272 INFO L226 Difference]: Without dead ends: 690 [2021-10-13 20:39:24,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:39:24,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-10-13 20:39:24,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2021-10-13 20:39:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 2.8940493468795356) internal successors, (1994), 689 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1994 transitions. [2021-10-13 20:39:24,297 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1994 transitions. Word has length 7 [2021-10-13 20:39:24,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:24,298 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 1994 transitions. [2021-10-13 20:39:24,298 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) [2021-10-13 20:39:24,298 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1994 transitions. [2021-10-13 20:39:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:39:24,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:24,305 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] [2021-10-13 20:39:24,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:24,516 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 [2021-10-13 20:39:24,517 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:24,518 INFO L82 PathProgramCache]: Analyzing trace with hash -89272419, now seen corresponding path program 1 times [2021-10-13 20:39:24,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:24,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586238864] [2021-10-13 20:39:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:39:24,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:24,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:24,521 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) [2021-10-13 20:39:24,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 20:39:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:39:24,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 20:39:24,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:24,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:24,993 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:24,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586238864] [2021-10-13 20:39:24,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586238864] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:24,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:24,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 20:39:24,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287482557] [2021-10-13 20:39:24,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 20:39:24,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:24,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 20:39:24,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:39:24,996 INFO L87 Difference]: Start difference. First operand 690 states and 1994 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:25,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:25,029 INFO L93 Difference]: Finished difference Result 997 states and 2819 transitions. [2021-10-13 20:39:25,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:39:25,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:39:25,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:25,035 INFO L225 Difference]: With dead ends: 997 [2021-10-13 20:39:25,035 INFO L226 Difference]: Without dead ends: 582 [2021-10-13 20:39:25,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:39:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-10-13 20:39:25,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2021-10-13 20:39:25,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 2.7263339070567985) internal successors, (1584), 581 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1584 transitions. [2021-10-13 20:39:25,079 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1584 transitions. Word has length 29 [2021-10-13 20:39:25,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:25,079 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 1584 transitions. [2021-10-13 20:39:25,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:25,080 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1584 transitions. [2021-10-13 20:39:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:39:25,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:25,082 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] [2021-10-13 20:39:25,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-13 20:39:25,294 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 [2021-10-13 20:39:25,295 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:25,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:25,296 INFO L82 PathProgramCache]: Analyzing trace with hash -438342517, now seen corresponding path program 2 times [2021-10-13 20:39:25,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:25,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180781515] [2021-10-13 20:39:25,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:39:25,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:25,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:25,298 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) [2021-10-13 20:39:25,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 20:39:25,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:39:25,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:25,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:39:25,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:25,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:25,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:25,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180781515] [2021-10-13 20:39:25,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180781515] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:25,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:25,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:39:25,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967049480] [2021-10-13 20:39:25,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:39:25,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:25,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:39:25,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:39:25,986 INFO L87 Difference]: Start difference. First operand 582 states and 1584 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:29,377 INFO L93 Difference]: Finished difference Result 812 states and 2059 transitions. [2021-10-13 20:39:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 20:39:29,378 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:39:29,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:29,384 INFO L225 Difference]: With dead ends: 812 [2021-10-13 20:39:29,384 INFO L226 Difference]: Without dead ends: 804 [2021-10-13 20:39:29,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1962.5ms TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-10-13 20:39:29,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-10-13 20:39:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 630. [2021-10-13 20:39:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 2.686804451510334) internal successors, (1690), 629 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1690 transitions. [2021-10-13 20:39:29,409 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1690 transitions. Word has length 29 [2021-10-13 20:39:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:29,410 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 1690 transitions. [2021-10-13 20:39:29,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1690 transitions. [2021-10-13 20:39:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:39:29,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:29,413 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] [2021-10-13 20:39:29,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:29,626 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 [2021-10-13 20:39:29,626 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:29,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:29,627 INFO L82 PathProgramCache]: Analyzing trace with hash -53769847, now seen corresponding path program 3 times [2021-10-13 20:39:29,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:29,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872782522] [2021-10-13 20:39:29,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:39:29,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:29,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:29,630 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) [2021-10-13 20:39:29,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 20:39:29,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 20:39:29,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:29,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:39:29,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:29,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:30,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:30,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872782522] [2021-10-13 20:39:30,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872782522] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:30,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:30,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-13 20:39:30,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475756756] [2021-10-13 20:39:30,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:39:30,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:39:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:39:30,310 INFO L87 Difference]: Start difference. First operand 630 states and 1690 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:34,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:34,477 INFO L93 Difference]: Finished difference Result 706 states and 1644 transitions. [2021-10-13 20:39:34,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 20:39:34,478 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:39:34,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:34,482 INFO L225 Difference]: With dead ends: 706 [2021-10-13 20:39:34,482 INFO L226 Difference]: Without dead ends: 576 [2021-10-13 20:39:34,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2604.6ms TimeCoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 20:39:34,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-13 20:39:34,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 450. [2021-10-13 20:39:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 2.4320712694877504) internal successors, (1092), 449 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1092 transitions. [2021-10-13 20:39:34,500 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1092 transitions. Word has length 29 [2021-10-13 20:39:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:34,500 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1092 transitions. [2021-10-13 20:39:34,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1092 transitions. [2021-10-13 20:39:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:39:34,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:34,502 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] [2021-10-13 20:39:34,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:34,715 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 [2021-10-13 20:39:34,716 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:34,717 INFO L82 PathProgramCache]: Analyzing trace with hash 114699501, now seen corresponding path program 4 times [2021-10-13 20:39:34,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:34,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679409446] [2021-10-13 20:39:34,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:39:34,718 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:34,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:34,719 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) [2021-10-13 20:39:34,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 20:39:34,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:39:34,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:34,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:39:34,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:35,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:35,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:35,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679409446] [2021-10-13 20:39:35,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679409446] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:35,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:35,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:39:35,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135435948] [2021-10-13 20:39:35,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:39:35,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:39:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:39:35,442 INFO L87 Difference]: Start difference. First operand 450 states and 1092 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:39,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:39,932 INFO L93 Difference]: Finished difference Result 722 states and 1669 transitions. [2021-10-13 20:39:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 20:39:39,933 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:39:39,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:39,938 INFO L225 Difference]: With dead ends: 722 [2021-10-13 20:39:39,938 INFO L226 Difference]: Without dead ends: 714 [2021-10-13 20:39:39,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2434.4ms TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2021-10-13 20:39:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-10-13 20:39:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 452. [2021-10-13 20:39:39,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 2.4279379157427936) internal successors, (1095), 451 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1095 transitions. [2021-10-13 20:39:39,956 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1095 transitions. Word has length 29 [2021-10-13 20:39:39,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:39,956 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1095 transitions. [2021-10-13 20:39:39,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:39,956 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1095 transitions. [2021-10-13 20:39:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:39:39,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:39,958 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] [2021-10-13 20:39:39,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:40,170 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 [2021-10-13 20:39:40,171 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:40,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:40,172 INFO L82 PathProgramCache]: Analyzing trace with hash 581581001, now seen corresponding path program 5 times [2021-10-13 20:39:40,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:40,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154429769] [2021-10-13 20:39:40,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:39:40,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:40,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:40,176 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) [2021-10-13 20:39:40,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 20:39:40,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:39:40,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:40,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:39:40,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:40,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:40,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:40,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154429769] [2021-10-13 20:39:40,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154429769] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:40,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:40,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:39:40,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602198425] [2021-10-13 20:39:40,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:39:40,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:40,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:39:40,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:39:40,786 INFO L87 Difference]: Start difference. First operand 452 states and 1095 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:43,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:43,285 INFO L93 Difference]: Finished difference Result 686 states and 1596 transitions. [2021-10-13 20:39:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 20:39:43,286 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:39:43,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:43,291 INFO L225 Difference]: With dead ends: 686 [2021-10-13 20:39:43,291 INFO L226 Difference]: Without dead ends: 678 [2021-10-13 20:39:43,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1127.3ms TimeCoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2021-10-13 20:39:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-10-13 20:39:43,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 450. [2021-10-13 20:39:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 2.4276169265033407) internal successors, (1090), 449 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1090 transitions. [2021-10-13 20:39:43,308 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1090 transitions. Word has length 29 [2021-10-13 20:39:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:43,308 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1090 transitions. [2021-10-13 20:39:43,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:43,309 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1090 transitions. [2021-10-13 20:39:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:39:43,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:43,310 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] [2021-10-13 20:39:43,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:43,524 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 [2021-10-13 20:39:43,524 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:43,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:43,525 INFO L82 PathProgramCache]: Analyzing trace with hash -382613089, now seen corresponding path program 6 times [2021-10-13 20:39:43,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:43,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088164106] [2021-10-13 20:39:43,525 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:39:43,525 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:43,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:43,527 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) [2021-10-13 20:39:43,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 20:39:43,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 20:39:43,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:43,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:39:43,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:43,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:44,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:44,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088164106] [2021-10-13 20:39:44,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088164106] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:44,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:44,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-13 20:39:44,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517161010] [2021-10-13 20:39:44,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:39:44,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:39:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:39:44,166 INFO L87 Difference]: Start difference. First operand 450 states and 1090 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:46,511 INFO L93 Difference]: Finished difference Result 678 states and 1582 transitions. [2021-10-13 20:39:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 20:39:46,514 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:39:46,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:46,518 INFO L225 Difference]: With dead ends: 678 [2021-10-13 20:39:46,518 INFO L226 Difference]: Without dead ends: 664 [2021-10-13 20:39:46,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1118.3ms TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2021-10-13 20:39:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-13 20:39:46,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 454. [2021-10-13 20:39:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 2.4216335540838854) internal successors, (1097), 453 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1097 transitions. [2021-10-13 20:39:46,543 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1097 transitions. Word has length 29 [2021-10-13 20:39:46,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:46,543 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 1097 transitions. [2021-10-13 20:39:46,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:46,544 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1097 transitions. [2021-10-13 20:39:46,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:39:46,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:46,546 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] [2021-10-13 20:39:46,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:46,759 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 [2021-10-13 20:39:46,759 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:46,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:46,760 INFO L82 PathProgramCache]: Analyzing trace with hash -464921919, now seen corresponding path program 7 times [2021-10-13 20:39:46,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:46,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479036962] [2021-10-13 20:39:46,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:39:46,762 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:46,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:46,763 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) [2021-10-13 20:39:46,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 20:39:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:39:46,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:39:46,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:47,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:47,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:47,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479036962] [2021-10-13 20:39:47,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479036962] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:47,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:47,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-13 20:39:47,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187317793] [2021-10-13 20:39:47,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:39:47,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:47,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:39:47,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:39:47,440 INFO L87 Difference]: Start difference. First operand 454 states and 1097 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:50,849 INFO L93 Difference]: Finished difference Result 698 states and 1613 transitions. [2021-10-13 20:39:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 20:39:50,849 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:39:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:50,853 INFO L225 Difference]: With dead ends: 698 [2021-10-13 20:39:50,854 INFO L226 Difference]: Without dead ends: 666 [2021-10-13 20:39:50,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1758.3ms TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2021-10-13 20:39:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-10-13 20:39:50,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 446. [2021-10-13 20:39:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 2.4247191011235953) internal successors, (1079), 445 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1079 transitions. [2021-10-13 20:39:50,869 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1079 transitions. Word has length 29 [2021-10-13 20:39:50,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:50,870 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1079 transitions. [2021-10-13 20:39:50,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1079 transitions. [2021-10-13 20:39:50,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:39:50,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:50,872 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] [2021-10-13 20:39:50,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:51,084 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 [2021-10-13 20:39:51,085 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:51,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:51,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1973761077, now seen corresponding path program 8 times [2021-10-13 20:39:51,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:51,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916400975] [2021-10-13 20:39:51,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:39:51,087 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:51,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:51,089 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) [2021-10-13 20:39:51,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 20:39:51,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:39:51,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:51,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:39:51,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:51,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:51,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:51,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:51,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916400975] [2021-10-13 20:39:51,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916400975] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:51,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:51,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:39:51,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988634556] [2021-10-13 20:39:51,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:39:51,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:51,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:39:51,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:39:51,747 INFO L87 Difference]: Start difference. First operand 446 states and 1079 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:53,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:53,402 INFO L93 Difference]: Finished difference Result 576 states and 1339 transitions. [2021-10-13 20:39:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 20:39:53,403 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:39:53,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:53,406 INFO L225 Difference]: With dead ends: 576 [2021-10-13 20:39:53,406 INFO L226 Difference]: Without dead ends: 568 [2021-10-13 20:39:53,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 943.9ms TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-10-13 20:39:53,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-10-13 20:39:53,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 442. [2021-10-13 20:39:53,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 2.4149659863945576) internal successors, (1065), 441 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1065 transitions. [2021-10-13 20:39:53,420 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1065 transitions. Word has length 29 [2021-10-13 20:39:53,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:53,420 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 1065 transitions. [2021-10-13 20:39:53,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1065 transitions. [2021-10-13 20:39:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:39:53,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:53,422 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] [2021-10-13 20:39:53,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-13 20:39:53,635 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 [2021-10-13 20:39:53,636 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:53,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:53,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1506879577, now seen corresponding path program 9 times [2021-10-13 20:39:53,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:53,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827827691] [2021-10-13 20:39:53,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:39:53,638 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:53,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:53,640 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) [2021-10-13 20:39:53,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 20:39:53,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 20:39:53,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:53,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:39:53,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:54,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:54,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:54,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827827691] [2021-10-13 20:39:54,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827827691] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:54,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:54,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:39:54,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7569107] [2021-10-13 20:39:54,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:39:54,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:54,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:39:54,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:39:54,340 INFO L87 Difference]: Start difference. First operand 442 states and 1065 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:55,903 INFO L93 Difference]: Finished difference Result 546 states and 1285 transitions. [2021-10-13 20:39:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 20:39:55,904 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:39:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:55,908 INFO L225 Difference]: With dead ends: 546 [2021-10-13 20:39:55,909 INFO L226 Difference]: Without dead ends: 530 [2021-10-13 20:39:55,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 839.8ms TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-10-13 20:39:55,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-10-13 20:39:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 436. [2021-10-13 20:39:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 2.4091954022988507) internal successors, (1048), 435 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1048 transitions. [2021-10-13 20:39:55,922 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1048 transitions. Word has length 29 [2021-10-13 20:39:55,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:55,922 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1048 transitions. [2021-10-13 20:39:55,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:55,923 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1048 transitions. [2021-10-13 20:39:55,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:39:55,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:55,924 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] [2021-10-13 20:39:55,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 20:39:56,137 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 [2021-10-13 20:39:56,138 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:56,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:56,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1338082029, now seen corresponding path program 10 times [2021-10-13 20:39:56,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:56,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112112871] [2021-10-13 20:39:56,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:39:56,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:56,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:56,141 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) [2021-10-13 20:39:56,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 20:39:56,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:39:56,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:56,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:39:56,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:56,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:56,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:56,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112112871] [2021-10-13 20:39:56,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112112871] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:56,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:56,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:39:56,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56144953] [2021-10-13 20:39:56,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:39:56,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:56,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:39:56,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:39:56,816 INFO L87 Difference]: Start difference. First operand 436 states and 1048 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:57,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:39:57,481 INFO L93 Difference]: Finished difference Result 472 states and 1116 transitions. [2021-10-13 20:39:57,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 20:39:57,481 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:39:57,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:39:57,485 INFO L225 Difference]: With dead ends: 472 [2021-10-13 20:39:57,485 INFO L226 Difference]: Without dead ends: 442 [2021-10-13 20:39:57,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 529.7ms TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:39:57,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-10-13 20:39:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 434. [2021-10-13 20:39:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.3856812933025404) internal successors, (1033), 433 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1033 transitions. [2021-10-13 20:39:57,497 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1033 transitions. Word has length 29 [2021-10-13 20:39:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:39:57,497 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1033 transitions. [2021-10-13 20:39:57,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:39:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1033 transitions. [2021-10-13 20:39:57,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:39:57,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:39:57,499 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] [2021-10-13 20:39:57,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-13 20:39:57,711 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 [2021-10-13 20:39:57,712 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:39:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:39:57,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1998647911, now seen corresponding path program 11 times [2021-10-13 20:39:57,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:39:57,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336381493] [2021-10-13 20:39:57,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:39:57,714 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:39:57,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:39:57,715 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) [2021-10-13 20:39:57,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 20:39:57,910 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:39:57,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:39:57,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:39:57,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:39:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:58,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:39:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:39:58,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:39:58,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336381493] [2021-10-13 20:39:58,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336381493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:39:58,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:39:58,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-13 20:39:58,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868744228] [2021-10-13 20:39:58,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:39:58,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:39:58,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:39:58,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:39:58,469 INFO L87 Difference]: Start difference. First operand 434 states and 1033 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:00,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:00,239 INFO L93 Difference]: Finished difference Result 630 states and 1425 transitions. [2021-10-13 20:40:00,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 20:40:00,239 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:00,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:00,242 INFO L225 Difference]: With dead ends: 630 [2021-10-13 20:40:00,242 INFO L226 Difference]: Without dead ends: 586 [2021-10-13 20:40:00,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 948.2ms TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2021-10-13 20:40:00,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-10-13 20:40:00,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 456. [2021-10-13 20:40:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.353846153846154) internal successors, (1071), 455 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1071 transitions. [2021-10-13 20:40:00,256 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1071 transitions. Word has length 29 [2021-10-13 20:40:00,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:00,257 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1071 transitions. [2021-10-13 20:40:00,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:00,257 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1071 transitions. [2021-10-13 20:40:00,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:00,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:00,258 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] [2021-10-13 20:40:00,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:00,472 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 [2021-10-13 20:40:00,472 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:00,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:00,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1916339081, now seen corresponding path program 12 times [2021-10-13 20:40:00,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:00,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407139025] [2021-10-13 20:40:00,474 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:40:00,474 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:00,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:00,476 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) [2021-10-13 20:40:00,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 20:40:00,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 20:40:00,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:00,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:00,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:00,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:01,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:01,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407139025] [2021-10-13 20:40:01,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407139025] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:01,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:01,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-13 20:40:01,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764452095] [2021-10-13 20:40:01,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:40:01,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:40:01,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:40:01,214 INFO L87 Difference]: Start difference. First operand 456 states and 1071 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:03,175 INFO L93 Difference]: Finished difference Result 558 states and 1251 transitions. [2021-10-13 20:40:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 20:40:03,176 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:03,180 INFO L225 Difference]: With dead ends: 558 [2021-10-13 20:40:03,180 INFO L226 Difference]: Without dead ends: 486 [2021-10-13 20:40:03,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1074.8ms TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-10-13 20:40:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-10-13 20:40:03,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 428. [2021-10-13 20:40:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 2.3185011709601873) internal successors, (990), 427 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:03,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 990 transitions. [2021-10-13 20:40:03,191 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 990 transitions. Word has length 29 [2021-10-13 20:40:03,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:03,192 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 990 transitions. [2021-10-13 20:40:03,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:03,192 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 990 transitions. [2021-10-13 20:40:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:03,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:03,194 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] [2021-10-13 20:40:03,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:03,406 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 [2021-10-13 20:40:03,407 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:03,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:03,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1163327747, now seen corresponding path program 13 times [2021-10-13 20:40:03,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:03,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695302607] [2021-10-13 20:40:03,409 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:40:03,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:03,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:03,411 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) [2021-10-13 20:40:03,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 20:40:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:40:03,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:03,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:03,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:04,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:04,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695302607] [2021-10-13 20:40:04,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695302607] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:04,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:04,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-13 20:40:04,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144372831] [2021-10-13 20:40:04,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:40:04,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:04,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:40:04,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:40:04,189 INFO L87 Difference]: Start difference. First operand 428 states and 990 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:05,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:05,078 INFO L93 Difference]: Finished difference Result 552 states and 1228 transitions. [2021-10-13 20:40:05,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 20:40:05,079 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:05,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:05,082 INFO L225 Difference]: With dead ends: 552 [2021-10-13 20:40:05,083 INFO L226 Difference]: Without dead ends: 460 [2021-10-13 20:40:05,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 633.0ms TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-13 20:40:05,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-10-13 20:40:05,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 402. [2021-10-13 20:40:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.314214463840399) internal successors, (928), 401 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:05,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 928 transitions. [2021-10-13 20:40:05,096 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 928 transitions. Word has length 29 [2021-10-13 20:40:05,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:05,096 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 928 transitions. [2021-10-13 20:40:05,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 928 transitions. [2021-10-13 20:40:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:05,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:05,099 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] [2021-10-13 20:40:05,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:05,310 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 [2021-10-13 20:40:05,311 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:05,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:05,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1047284713, now seen corresponding path program 14 times [2021-10-13 20:40:05,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:05,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193928169] [2021-10-13 20:40:05,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:40:05,312 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:05,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:05,314 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) [2021-10-13 20:40:05,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 20:40:05,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:40:05,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:05,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 20:40:05,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:05,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:05,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:05,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193928169] [2021-10-13 20:40:05,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193928169] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:05,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:05,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 20:40:05,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520692147] [2021-10-13 20:40:05,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 20:40:05,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:05,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 20:40:05,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:40:05,869 INFO L87 Difference]: Start difference. First operand 402 states and 928 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:06,162 INFO L93 Difference]: Finished difference Result 154 states and 310 transitions. [2021-10-13 20:40:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 20:40:06,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:06,163 INFO L225 Difference]: With dead ends: 154 [2021-10-13 20:40:06,163 INFO L226 Difference]: Without dead ends: 106 [2021-10-13 20:40:06,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 198.5ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-13 20:40:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-13 20:40:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2021-10-13 20:40:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.0309278350515463) internal successors, (197), 97 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 197 transitions. [2021-10-13 20:40:06,166 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 197 transitions. Word has length 29 [2021-10-13 20:40:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:06,166 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 197 transitions. [2021-10-13 20:40:06,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 197 transitions. [2021-10-13 20:40:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:06,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:06,167 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] [2021-10-13 20:40:06,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:06,370 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 [2021-10-13 20:40:06,370 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:06,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:06,371 INFO L82 PathProgramCache]: Analyzing trace with hash -208516583, now seen corresponding path program 15 times [2021-10-13 20:40:06,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:06,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028120203] [2021-10-13 20:40:06,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:40:06,372 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:06,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:06,383 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) [2021-10-13 20:40:06,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 20:40:06,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 20:40:06,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:06,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:06,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:06,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:07,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:07,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028120203] [2021-10-13 20:40:07,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028120203] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:07,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:07,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:07,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551086640] [2021-10-13 20:40:07,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:07,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:07,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:07,207 INFO L87 Difference]: Start difference. First operand 98 states and 197 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:07,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:07,733 INFO L93 Difference]: Finished difference Result 112 states and 216 transitions. [2021-10-13 20:40:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 20:40:07,734 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:07,734 INFO L225 Difference]: With dead ends: 112 [2021-10-13 20:40:07,734 INFO L226 Difference]: Without dead ends: 100 [2021-10-13 20:40:07,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 513.5ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:40:07,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-13 20:40:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2021-10-13 20:40:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.9690721649484537) internal successors, (191), 97 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 191 transitions. [2021-10-13 20:40:07,736 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 191 transitions. Word has length 29 [2021-10-13 20:40:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:07,737 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 191 transitions. [2021-10-13 20:40:07,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 191 transitions. [2021-10-13 20:40:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:07,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:07,737 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] [2021-10-13 20:40:07,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:07,938 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 [2021-10-13 20:40:07,938 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:07,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:07,939 INFO L82 PathProgramCache]: Analyzing trace with hash 994655997, now seen corresponding path program 16 times [2021-10-13 20:40:07,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:07,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003675569] [2021-10-13 20:40:07,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:40:07,940 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:07,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:07,942 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) [2021-10-13 20:40:07,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 20:40:08,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:40:08,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:08,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:08,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:08,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:08,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:08,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003675569] [2021-10-13 20:40:08,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003675569] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:08,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:08,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:08,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986583523] [2021-10-13 20:40:08,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:08,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:08,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:08,664 INFO L87 Difference]: Start difference. First operand 98 states and 191 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:09,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:09,789 INFO L93 Difference]: Finished difference Result 166 states and 333 transitions. [2021-10-13 20:40:09,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 20:40:09,790 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:09,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:09,791 INFO L225 Difference]: With dead ends: 166 [2021-10-13 20:40:09,791 INFO L226 Difference]: Without dead ends: 158 [2021-10-13 20:40:09,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 943.0ms TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:40:09,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-13 20:40:09,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 100. [2021-10-13 20:40:09,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.9595959595959596) internal successors, (194), 99 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:09,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 194 transitions. [2021-10-13 20:40:09,794 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 194 transitions. Word has length 29 [2021-10-13 20:40:09,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:09,795 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 194 transitions. [2021-10-13 20:40:09,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 194 transitions. [2021-10-13 20:40:09,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:09,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:09,796 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] [2021-10-13 20:40:09,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:09,997 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 [2021-10-13 20:40:09,998 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:09,998 INFO L82 PathProgramCache]: Analyzing trace with hash -956124909, now seen corresponding path program 17 times [2021-10-13 20:40:09,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:09,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008570419] [2021-10-13 20:40:09,999 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:40:09,999 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:09,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:10,000 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) [2021-10-13 20:40:10,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 20:40:10,278 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:40:10,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:10,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:10,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:10,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:10,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:10,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008570419] [2021-10-13 20:40:10,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008570419] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:10,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:10,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:10,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454700693] [2021-10-13 20:40:10,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:10,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:10,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:10,747 INFO L87 Difference]: Start difference. First operand 100 states and 194 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:11,654 INFO L93 Difference]: Finished difference Result 164 states and 326 transitions. [2021-10-13 20:40:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 20:40:11,655 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:11,656 INFO L225 Difference]: With dead ends: 164 [2021-10-13 20:40:11,657 INFO L226 Difference]: Without dead ends: 150 [2021-10-13 20:40:11,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 670.9ms TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-10-13 20:40:11,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-13 20:40:11,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 92. [2021-10-13 20:40:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.934065934065934) internal successors, (176), 91 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 176 transitions. [2021-10-13 20:40:11,666 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 176 transitions. Word has length 29 [2021-10-13 20:40:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:11,666 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 176 transitions. [2021-10-13 20:40:11,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 176 transitions. [2021-10-13 20:40:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:11,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:11,667 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] [2021-10-13 20:40:11,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-13 20:40:11,876 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 [2021-10-13 20:40:11,876 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:11,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:11,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2012616331, now seen corresponding path program 18 times [2021-10-13 20:40:11,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:11,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420636863] [2021-10-13 20:40:11,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:40:11,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:11,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:11,880 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) [2021-10-13 20:40:11,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 20:40:12,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 20:40:12,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:12,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:12,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:12,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:12,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:12,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420636863] [2021-10-13 20:40:12,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420636863] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:12,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:12,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:12,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853069120] [2021-10-13 20:40:12,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:12,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:12,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:12,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:12,618 INFO L87 Difference]: Start difference. First operand 92 states and 176 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:13,086 INFO L93 Difference]: Finished difference Result 102 states and 189 transitions. [2021-10-13 20:40:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 20:40:13,087 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:13,088 INFO L225 Difference]: With dead ends: 102 [2021-10-13 20:40:13,088 INFO L226 Difference]: Without dead ends: 88 [2021-10-13 20:40:13,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 461.5ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:40:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-13 20:40:13,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-10-13 20:40:13,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.8941176470588235) internal successors, (161), 85 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 161 transitions. [2021-10-13 20:40:13,092 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 161 transitions. Word has length 29 [2021-10-13 20:40:13,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:13,092 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 161 transitions. [2021-10-13 20:40:13,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:13,092 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 161 transitions. [2021-10-13 20:40:13,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:13,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:13,093 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] [2021-10-13 20:40:13,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-13 20:40:13,304 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 [2021-10-13 20:40:13,305 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:13,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:13,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1571605545, now seen corresponding path program 19 times [2021-10-13 20:40:13,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:13,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295808218] [2021-10-13 20:40:13,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:40:13,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:13,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:13,308 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) [2021-10-13 20:40:13,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 20:40:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:40:13,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:13,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:13,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:14,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:14,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:14,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295808218] [2021-10-13 20:40:14,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295808218] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:14,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:14,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:14,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389995124] [2021-10-13 20:40:14,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:14,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:14,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:14,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:14,074 INFO L87 Difference]: Start difference. First operand 86 states and 161 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:14,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:14,836 INFO L93 Difference]: Finished difference Result 126 states and 241 transitions. [2021-10-13 20:40:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 20:40:14,837 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:14,837 INFO L225 Difference]: With dead ends: 126 [2021-10-13 20:40:14,837 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 20:40:14,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 733.8ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:40:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 20:40:14,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2021-10-13 20:40:14,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.8850574712643677) internal successors, (164), 87 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 164 transitions. [2021-10-13 20:40:14,840 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 164 transitions. Word has length 29 [2021-10-13 20:40:14,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:14,840 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 164 transitions. [2021-10-13 20:40:14,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 164 transitions. [2021-10-13 20:40:14,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:14,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:14,840 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] [2021-10-13 20:40:14,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:15,041 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 [2021-10-13 20:40:15,041 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:15,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:15,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2056053777, now seen corresponding path program 20 times [2021-10-13 20:40:15,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:15,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421775051] [2021-10-13 20:40:15,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:40:15,048 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:15,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:15,062 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) [2021-10-13 20:40:15,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 20:40:15,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:40:15,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:15,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:15,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:15,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:15,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:15,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421775051] [2021-10-13 20:40:15,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421775051] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:15,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:15,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:15,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466751079] [2021-10-13 20:40:15,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:15,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:15,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:15,860 INFO L87 Difference]: Start difference. First operand 88 states and 164 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:16,272 INFO L93 Difference]: Finished difference Result 96 states and 174 transitions. [2021-10-13 20:40:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 20:40:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:16,273 INFO L225 Difference]: With dead ends: 96 [2021-10-13 20:40:16,273 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 20:40:16,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 422.1ms TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:40:16,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 20:40:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-13 20:40:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.8481012658227849) internal successors, (146), 79 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 146 transitions. [2021-10-13 20:40:16,277 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 146 transitions. Word has length 29 [2021-10-13 20:40:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:16,277 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 146 transitions. [2021-10-13 20:40:16,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 146 transitions. [2021-10-13 20:40:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:16,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:16,278 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] [2021-10-13 20:40:16,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:16,482 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 [2021-10-13 20:40:16,483 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:16,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:16,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1781088475, now seen corresponding path program 21 times [2021-10-13 20:40:16,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:16,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021995211] [2021-10-13 20:40:16,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:40:16,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:16,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:16,487 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) [2021-10-13 20:40:16,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 20:40:16,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 20:40:16,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:16,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:16,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:16,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:17,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:17,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021995211] [2021-10-13 20:40:17,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021995211] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:17,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:17,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:17,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806930010] [2021-10-13 20:40:17,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:17,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:17,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:17,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:17,319 INFO L87 Difference]: Start difference. First operand 80 states and 146 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:18,938 INFO L93 Difference]: Finished difference Result 142 states and 275 transitions. [2021-10-13 20:40:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 20:40:18,939 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:18,939 INFO L225 Difference]: With dead ends: 142 [2021-10-13 20:40:18,940 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 20:40:18,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1272.1ms TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:40:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 20:40:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 80. [2021-10-13 20:40:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.8227848101265822) internal successors, (144), 79 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 144 transitions. [2021-10-13 20:40:18,943 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 144 transitions. Word has length 29 [2021-10-13 20:40:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:18,943 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 144 transitions. [2021-10-13 20:40:18,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 144 transitions. [2021-10-13 20:40:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:18,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:18,944 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] [2021-10-13 20:40:18,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:19,163 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 [2021-10-13 20:40:19,164 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:19,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:19,165 INFO L82 PathProgramCache]: Analyzing trace with hash 314755801, now seen corresponding path program 22 times [2021-10-13 20:40:19,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:19,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955389755] [2021-10-13 20:40:19,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:40:19,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:19,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:19,168 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) [2021-10-13 20:40:19,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 20:40:19,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:40:19,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:19,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:19,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:19,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:20,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:20,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955389755] [2021-10-13 20:40:20,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955389755] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:20,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:20,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:20,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289825994] [2021-10-13 20:40:20,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:20,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:20,068 INFO L87 Difference]: Start difference. First operand 80 states and 144 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:22,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:22,349 INFO L93 Difference]: Finished difference Result 116 states and 216 transitions. [2021-10-13 20:40:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 20:40:22,350 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:22,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:22,351 INFO L225 Difference]: With dead ends: 116 [2021-10-13 20:40:22,351 INFO L226 Difference]: Without dead ends: 102 [2021-10-13 20:40:22,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1644.8ms TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-10-13 20:40:22,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-13 20:40:22,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 78. [2021-10-13 20:40:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.8051948051948052) internal successors, (139), 77 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 139 transitions. [2021-10-13 20:40:22,355 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 139 transitions. Word has length 29 [2021-10-13 20:40:22,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:22,355 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 139 transitions. [2021-10-13 20:40:22,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:22,355 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 139 transitions. [2021-10-13 20:40:22,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:22,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:22,356 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] [2021-10-13 20:40:22,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:22,556 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 [2021-10-13 20:40:22,557 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:22,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:22,557 INFO L82 PathProgramCache]: Analyzing trace with hash -351904829, now seen corresponding path program 23 times [2021-10-13 20:40:22,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:22,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182910324] [2021-10-13 20:40:22,558 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:40:22,559 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:22,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:22,560 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) [2021-10-13 20:40:22,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 20:40:22,844 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:40:22,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:22,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:22,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:23,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:23,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:23,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182910324] [2021-10-13 20:40:23,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182910324] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:23,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:23,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:23,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787812399] [2021-10-13 20:40:23,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:23,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:23,408 INFO L87 Difference]: Start difference. First operand 78 states and 139 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:24,095 INFO L93 Difference]: Finished difference Result 82 states and 143 transitions. [2021-10-13 20:40:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 20:40:24,096 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:24,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:24,096 INFO L225 Difference]: With dead ends: 82 [2021-10-13 20:40:24,096 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 20:40:24,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 730.8ms TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:40:24,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 20:40:24,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-13 20:40:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.7671232876712328) internal successors, (129), 73 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 129 transitions. [2021-10-13 20:40:24,099 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 129 transitions. Word has length 29 [2021-10-13 20:40:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:24,099 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 129 transitions. [2021-10-13 20:40:24,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 129 transitions. [2021-10-13 20:40:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:24,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:24,100 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] [2021-10-13 20:40:24,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:24,300 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 [2021-10-13 20:40:24,301 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:24,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1992281561, now seen corresponding path program 24 times [2021-10-13 20:40:24,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:24,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858090951] [2021-10-13 20:40:24,302 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:40:24,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:24,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:24,304 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) [2021-10-13 20:40:24,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 20:40:24,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 20:40:24,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:24,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:24,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:24,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:25,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:25,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858090951] [2021-10-13 20:40:25,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858090951] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:25,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:25,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:25,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818991731] [2021-10-13 20:40:25,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:25,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:25,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:25,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:25,089 INFO L87 Difference]: Start difference. First operand 74 states and 129 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:25,881 INFO L93 Difference]: Finished difference Result 104 states and 188 transitions. [2021-10-13 20:40:25,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 20:40:25,882 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:25,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:25,882 INFO L225 Difference]: With dead ends: 104 [2021-10-13 20:40:25,882 INFO L226 Difference]: Without dead ends: 96 [2021-10-13 20:40:25,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 611.9ms TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-10-13 20:40:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-13 20:40:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2021-10-13 20:40:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2021-10-13 20:40:25,885 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 29 [2021-10-13 20:40:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:25,885 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2021-10-13 20:40:25,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2021-10-13 20:40:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:25,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:25,886 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] [2021-10-13 20:40:25,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:26,088 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 [2021-10-13 20:40:26,089 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:26,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1022340125, now seen corresponding path program 25 times [2021-10-13 20:40:26,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:26,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802881464] [2021-10-13 20:40:26,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:40:26,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:26,092 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) [2021-10-13 20:40:26,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 20:40:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:40:26,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:26,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:26,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:26,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:26,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802881464] [2021-10-13 20:40:26,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802881464] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:26,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:26,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:26,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477612649] [2021-10-13 20:40:26,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:26,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:26,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:26,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:26,861 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:27,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:27,515 INFO L93 Difference]: Finished difference Result 78 states and 131 transitions. [2021-10-13 20:40:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 20:40:27,516 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:27,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:27,517 INFO L225 Difference]: With dead ends: 78 [2021-10-13 20:40:27,517 INFO L226 Difference]: Without dead ends: 66 [2021-10-13 20:40:27,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 634.9ms TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:40:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-13 20:40:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-13 20:40:27,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.676923076923077) internal successors, (109), 65 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 109 transitions. [2021-10-13 20:40:27,519 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 109 transitions. Word has length 29 [2021-10-13 20:40:27,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:27,519 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 109 transitions. [2021-10-13 20:40:27,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 109 transitions. [2021-10-13 20:40:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 20:40:27,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:27,520 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] [2021-10-13 20:40:27,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:27,720 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 [2021-10-13 20:40:27,721 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-13 20:40:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:27,722 INFO L82 PathProgramCache]: Analyzing trace with hash 537891893, now seen corresponding path program 26 times [2021-10-13 20:40:27,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:27,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966388499] [2021-10-13 20:40:27,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:40:27,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:27,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:27,724 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) [2021-10-13 20:40:27,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 20:40:28,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:40:28,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:28,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:40:28,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:28,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:28,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:28,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966388499] [2021-10-13 20:40:28,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966388499] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:28,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:28,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:40:28,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296645711] [2021-10-13 20:40:28,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:40:28,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:28,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:40:28,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:40:28,514 INFO L87 Difference]: Start difference. First operand 66 states and 109 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:28,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:28,787 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2021-10-13 20:40:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 20:40:28,788 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 29 [2021-10-13 20:40:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:28,788 INFO L225 Difference]: With dead ends: 26 [2021-10-13 20:40:28,788 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 20:40:28,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 364.6ms TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:40:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 20:40:28,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 20:40:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:28,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 20:40:28,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-10-13 20:40:28,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:28,789 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 20:40:28,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:40:28,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 20:40:28,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 20:40:28,792 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 20:40:28,793 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 20:40:28,793 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 20:40:28,793 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 20:40:28,793 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 20:40:28,793 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 20:40:28,793 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 20:40:28,793 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 20:40:28,794 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 20:40:28,794 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 20:40:28,794 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 20:40:28,794 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 20:40:28,794 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:40:28,794 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:40:28,794 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 20:40:28,795 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 20:40:28,795 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 20:40:28,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:28,998 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 [2021-10-13 20:40:29,004 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 20:40:29,004 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 20:40:29,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:40:29 BasicIcfg [2021-10-13 20:40:29,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 20:40:29,008 INFO L168 Benchmark]: Toolchain (without parser) took 83722.79 ms. Allocated memory was 160.4 MB in the beginning and 241.2 MB in the end (delta: 80.7 MB). Free memory was 135.4 MB in the beginning and 184.1 MB in the end (delta: -48.6 MB). Peak memory consumption was 32.8 MB. Max. memory is 8.0 GB. [2021-10-13 20:40:29,008 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 130.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 20:40:29,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.03 ms. Allocated memory is still 160.4 MB. Free memory was 135.2 MB in the beginning and 124.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-13 20:40:29,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.01 ms. Allocated memory is still 160.4 MB. Free memory was 124.2 MB in the beginning and 122.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 20:40:29,009 INFO L168 Benchmark]: Boogie Preprocessor took 33.51 ms. Allocated memory is still 160.4 MB. Free memory was 122.3 MB in the beginning and 121.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 20:40:29,010 INFO L168 Benchmark]: RCFGBuilder took 819.88 ms. Allocated memory is still 160.4 MB. Free memory was 120.9 MB in the beginning and 139.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2021-10-13 20:40:29,010 INFO L168 Benchmark]: TraceAbstraction took 82451.69 ms. Allocated memory was 160.4 MB in the beginning and 241.2 MB in the end (delta: 80.7 MB). Free memory was 138.9 MB in the beginning and 184.1 MB in the end (delta: -45.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 8.0 GB. [2021-10-13 20:40:29,013 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 160.4 MB. Free memory is still 130.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 343.03 ms. Allocated memory is still 160.4 MB. Free memory was 135.2 MB in the beginning and 124.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.01 ms. Allocated memory is still 160.4 MB. Free memory was 124.2 MB in the beginning and 122.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.51 ms. Allocated memory is still 160.4 MB. Free memory was 122.3 MB in the beginning and 121.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 819.88 ms. Allocated memory is still 160.4 MB. Free memory was 120.9 MB in the beginning and 139.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 82451.69 ms. Allocated memory was 160.4 MB in the beginning and 241.2 MB in the end (delta: 80.7 MB). Free memory was 138.9 MB in the beginning and 184.1 MB in the end (delta: -45.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12543.6ms, 147 PlacesBefore, 56 PlacesAfterwards, 142 TransitionsBefore, 49 TransitionsAfterwards, 2512 CoEnabledTransitionPairs, 7 FixpointIterations, 79 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 153 TotalNumberOfCompositions, 8051 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4679, positive: 4491, positive conditional: 0, positive unconditional: 4491, negative: 188, negative conditional: 0, negative unconditional: 188, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2110, positive: 2042, positive conditional: 0, positive unconditional: 2042, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2110, positive: 1983, positive conditional: 0, positive unconditional: 1983, negative: 127, negative conditional: 0, negative unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 127, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 475, positive: 55, positive conditional: 0, positive unconditional: 55, negative: 420, negative conditional: 0, negative unconditional: 420, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4679, positive: 2449, positive conditional: 0, positive unconditional: 2449, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 2110, unknown conditional: 0, unknown unconditional: 2110] , Statistics on independence cache: Total cache size (in pairs): 391, Positive cache size: 360, Positive conditional cache size: 0, Positive unconditional cache size: 360, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - 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 - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 98]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 99]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 99]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 100]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 100]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 101]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 101]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 104]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 81]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 181 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 82297.5ms, OverallIterations: 33, TraceHistogramMax: 1, EmptinessCheckTime: 50.6ms, AutomataDifference: 40314.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12679.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1421 SDtfs, 3562 SDslu, 8163 SDs, 0 SdLazy, 7054 SolverSat, 810 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18866.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1732 GetRequests, 1189 SyntacticMatches, 2 SemanticMatches, 541 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 25373.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1379occurred in iteration=0, InterpolantAutomatonStates: 424, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 776.9ms AutomataMinimizationTime, 33 MinimizatonAttempts, 1950 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 346.4ms SsaConstructionTime, 1467.4ms SatisfiabilityAnalysisTime, 14970.5ms InterpolantComputationTime, 785 NumberOfCodeBlocks, 785 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 1504 ConstructedInterpolants, 14 QuantifiedInterpolants, 6988 SizeOfPredicates, 252 NumberOfNonLiveVariables, 3053 ConjunctsInSsa, 299 ConjunctsInUnsatCore, 66 InterpolantComputations, 66 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 - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 20:40:29,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...