/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/misc-3-extended.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:19:40,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:19:40,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:19:40,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-06 21:19:40,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-06 21:19:40,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-06 21:19:40,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-06 21:19:40,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-06 21:19:40,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-06 21:19:40,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-06 21:19:40,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-06 21:19:40,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-06 21:19:40,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:19:40,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:19:40,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:19:40,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:19:40,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:19:40,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:19:40,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:19:40,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:19:40,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:19:40,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:19:40,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:19:40,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:19:40,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-06 21:19:40,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-06 21:19:40,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-06 21:19:40,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-06 21:19:40,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-06 21:19:40,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-06 21:19:40,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 21:19:40,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 21:19:40,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 21:19:40,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 21:19:40,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 21:19:40,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 21:19:40,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 21:19:40,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 21:19:40,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:19:40,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:19:40,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:19:40,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:19:40,686 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:19:40,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:19:40,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:19:40,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:19:40,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:19:40,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:19:40,690 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:19:40,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:19:40,690 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:19:40,690 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:19:40,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:19:40,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:19:40,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:19:40,692 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:19:40,692 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:19:40,692 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:19:40,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:19:40,692 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:19:40,693 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:19:40,693 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:19:40,693 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:19:40,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:19:40,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:19:40,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:19:40,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:19:40,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:19:40,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:19:40,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:19:40,695 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:19:40,696 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:19:40,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:19:40,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:19:40,696 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:19:41,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:19:41,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:19:41,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:19:41,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:19:41,147 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:19:41,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/misc-3-extended.wvr.c [2021-10-06 21:19:41,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e00871bf5/dd9f84b9f7674543aa6b54aacf504a2d/FLAGbc0eed5c4 [2021-10-06 21:19:41,940 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:19:41,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/misc-3-extended.wvr.c [2021-10-06 21:19:41,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e00871bf5/dd9f84b9f7674543aa6b54aacf504a2d/FLAGbc0eed5c4 [2021-10-06 21:19:42,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e00871bf5/dd9f84b9f7674543aa6b54aacf504a2d [2021-10-06 21:19:42,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:19:42,333 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:19:42,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:19:42,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:19:42,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:19:42,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d3fdb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42, skipping insertion in model container [2021-10-06 21:19:42,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:19:42,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:19:42,700 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/misc-3-extended.wvr.c[2578,2591] [2021-10-06 21:19:42,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:19:42,723 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:19:42,774 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/misc-3-extended.wvr.c[2578,2591] [2021-10-06 21:19:42,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:19:42,805 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:19:42,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42 WrapperNode [2021-10-06 21:19:42,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:19:42,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:19:42,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:19:42,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:19:42,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:19:42,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:19:42,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:19:42,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:19:42,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:19:42,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:19:42,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:19:42,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:19:42,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42" (1/1) ... [2021-10-06 21:19:42,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:19:42,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:19:42,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 21:19:42,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 21:19:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:19:43,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:19:43,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:19:43,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:19:43,027 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:19:43,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:19:43,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:19:43,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:19:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:19:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:19:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:19:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:19:43,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:19:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:19:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:19:43,031 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:19:43,603 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:19:43,604 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-06 21:19:43,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:19:43 BoogieIcfgContainer [2021-10-06 21:19:43,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:19:43,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:19:43,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:19:43,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:19:43,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:19:42" (1/3) ... [2021-10-06 21:19:43,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5e3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:19:43, skipping insertion in model container [2021-10-06 21:19:43,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:19:42" (2/3) ... [2021-10-06 21:19:43,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5e3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:19:43, skipping insertion in model container [2021-10-06 21:19:43,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:19:43" (3/3) ... [2021-10-06 21:19:43,617 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-3-extended.wvr.c [2021-10-06 21:19:43,623 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:19:43,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-06 21:19:43,624 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:19:43,679 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,679 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,680 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,680 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,680 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,681 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,690 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,690 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,690 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,690 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,698 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,699 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,699 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,699 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,700 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,700 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,700 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,701 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,701 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,701 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,701 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,702 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,709 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,710 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,710 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,710 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,710 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,718 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,718 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,718 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,726 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,730 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:19:43,751 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 21:19:43,800 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:19:43,809 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 21:19:43,809 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-06 21:19:43,829 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:19:43,842 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 136 transitions, 296 flow [2021-10-06 21:19:43,846 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 136 transitions, 296 flow [2021-10-06 21:19:43,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 130 places, 136 transitions, 296 flow [2021-10-06 21:19:43,911 INFO L129 PetriNetUnfolder]: 16/133 cut-off events. [2021-10-06 21:19:43,912 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 21:19:43,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 16/133 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 189 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2021-10-06 21:19:43,924 INFO L116 LiptonReduction]: Number of co-enabled transitions 3570 [2021-10-06 21:19:59,858 INFO L131 LiptonReduction]: Checked pairs total: 3384 [2021-10-06 21:19:59,859 INFO L133 LiptonReduction]: Total number of compositions: 145 [2021-10-06 21:19:59,869 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 36 transitions, 96 flow [2021-10-06 21:19:59,887 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 73 states have (on average 3.493150684931507) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 73 states have (on average 3.493150684931507) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:19:59,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:19:59,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:19:59,897 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:19:59,897 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:19:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:19:59,904 INFO L82 PathProgramCache]: Analyzing trace with hash 575, now seen corresponding path program 1 times [2021-10-06 21:19:59,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:19:59,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066260236] [2021-10-06 21:19:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:19:59,919 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:19:59,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:19:59,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:19:59,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:19:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:19:59,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:19:59,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:19:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:59,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:19:59,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:19:59,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:19:59,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066260236] [2021-10-06 21:19:59,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066260236] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:19:59,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:19:59,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:19:59,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015005256] [2021-10-06 21:20:00,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:20:00,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:00,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:20:00,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:20:00,025 INFO L87 Difference]: Start difference. First operand has 87 states, 73 states have (on average 3.493150684931507) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:00,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:00,049 INFO L93 Difference]: Finished difference Result 84 states and 252 transitions. [2021-10-06 21:20:00,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:20:00,051 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 21:20:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:00,064 INFO L225 Difference]: With dead ends: 84 [2021-10-06 21:20:00,064 INFO L226 Difference]: Without dead ends: 84 [2021-10-06 21:20:00,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:20:00,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-06 21:20:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-06 21:20:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 3.452054794520548) internal successors, (252), 83 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 252 transitions. [2021-10-06 21:20:00,114 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 252 transitions. Word has length 1 [2021-10-06 21:20:00,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:00,115 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 252 transitions. [2021-10-06 21:20:00,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:00,115 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 252 transitions. [2021-10-06 21:20:00,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:20:00,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:00,116 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:20:00,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-06 21:20:00,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:00,328 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:20:00,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:00,330 INFO L82 PathProgramCache]: Analyzing trace with hash 563319, now seen corresponding path program 1 times [2021-10-06 21:20:00,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:00,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502987946] [2021-10-06 21:20:00,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:00,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:00,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:00,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:00,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:20:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:00,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:20:00,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:00,776 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:20:00,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-06 21:20:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:01,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:01,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:01,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502987946] [2021-10-06 21:20:01,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502987946] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:20:01,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:20:01,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:20:01,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227452004] [2021-10-06 21:20:01,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:20:01,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:01,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:20:01,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:20:01,427 INFO L87 Difference]: Start difference. First operand 84 states and 252 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) [2021-10-06 21:20:01,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:01,491 INFO L93 Difference]: Finished difference Result 78 states and 236 transitions. [2021-10-06 21:20:01,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:20:01,493 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 [2021-10-06 21:20:01,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:01,501 INFO L225 Difference]: With dead ends: 78 [2021-10-06 21:20:01,501 INFO L226 Difference]: Without dead ends: 78 [2021-10-06 21:20:01,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:20:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-06 21:20:01,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-06 21:20:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 3.420289855072464) internal successors, (236), 77 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:01,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 236 transitions. [2021-10-06 21:20:01,529 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 236 transitions. Word has length 3 [2021-10-06 21:20:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:01,534 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 236 transitions. [2021-10-06 21:20:01,534 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) [2021-10-06 21:20:01,534 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 236 transitions. [2021-10-06 21:20:01,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:20:01,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:01,535 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:20:01,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:01,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:01,747 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:20:01,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:01,749 INFO L82 PathProgramCache]: Analyzing trace with hash 563320, now seen corresponding path program 1 times [2021-10-06 21:20:01,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:01,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951075877] [2021-10-06 21:20:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:01,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:01,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:01,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:01,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:20:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:01,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:20:01,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:01,983 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:20:01,984 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 [2021-10-06 21:20:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:02,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:02,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:02,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951075877] [2021-10-06 21:20:02,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951075877] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:20:02,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:20:02,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:20:02,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844971889] [2021-10-06 21:20:02,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:20:02,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:02,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:20:02,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:02,120 INFO L87 Difference]: Start difference. First operand 78 states and 236 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:02,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:02,164 INFO L93 Difference]: Finished difference Result 72 states and 220 transitions. [2021-10-06 21:20:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:20:02,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:20:02,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:02,167 INFO L225 Difference]: With dead ends: 72 [2021-10-06 21:20:02,167 INFO L226 Difference]: Without dead ends: 72 [2021-10-06 21:20:02,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:02,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-06 21:20:02,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-06 21:20:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 3.3846153846153846) internal successors, (220), 71 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 220 transitions. [2021-10-06 21:20:02,177 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 220 transitions. Word has length 3 [2021-10-06 21:20:02,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:02,177 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 220 transitions. [2021-10-06 21:20:02,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:02,178 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 220 transitions. [2021-10-06 21:20:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:20:02,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:02,178 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:20:02,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:02,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:02,392 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:20:02,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:02,395 INFO L82 PathProgramCache]: Analyzing trace with hash 541361393, now seen corresponding path program 1 times [2021-10-06 21:20:02,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:02,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551864293] [2021-10-06 21:20:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:02,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:02,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:02,398 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:02,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:20:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:02,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:20:02,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:02,602 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:20:02,605 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 [2021-10-06 21:20:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:02,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:02,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:02,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551864293] [2021-10-06 21:20:02,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551864293] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:20:02,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:20:02,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:20:02,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015967857] [2021-10-06 21:20:02,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:20:02,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:02,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:20:02,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:02,777 INFO L87 Difference]: Start difference. First operand 72 states and 220 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:02,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:02,812 INFO L93 Difference]: Finished difference Result 66 states and 204 transitions. [2021-10-06 21:20:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:20:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:20:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:02,814 INFO L225 Difference]: With dead ends: 66 [2021-10-06 21:20:02,814 INFO L226 Difference]: Without dead ends: 66 [2021-10-06 21:20:02,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-06 21:20:02,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-06 21:20:02,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 3.3442622950819674) internal successors, (204), 65 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 204 transitions. [2021-10-06 21:20:02,822 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 204 transitions. Word has length 5 [2021-10-06 21:20:02,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:02,822 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 204 transitions. [2021-10-06 21:20:02,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:02,823 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 204 transitions. [2021-10-06 21:20:02,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:20:02,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:02,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:20:02,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-06 21:20:03,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:03,043 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:20:03,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:03,044 INFO L82 PathProgramCache]: Analyzing trace with hash 541361394, now seen corresponding path program 1 times [2021-10-06 21:20:03,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:03,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104471796] [2021-10-06 21:20:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:03,046 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:03,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:03,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:03,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:20:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:03,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:20:03,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:03,270 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:20:03,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-06 21:20:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:03,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:03,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:03,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104471796] [2021-10-06 21:20:03,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104471796] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:20:03,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:20:03,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:20:03,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665518800] [2021-10-06 21:20:03,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:20:03,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:20:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:20:03,744 INFO L87 Difference]: Start difference. First operand 66 states and 204 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) [2021-10-06 21:20:03,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:03,773 INFO L93 Difference]: Finished difference Result 60 states and 188 transitions. [2021-10-06 21:20:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:20:03,774 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 [2021-10-06 21:20:03,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:03,775 INFO L225 Difference]: With dead ends: 60 [2021-10-06 21:20:03,775 INFO L226 Difference]: Without dead ends: 60 [2021-10-06 21:20:03,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:20:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-06 21:20:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-06 21:20:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 3.2982456140350878) internal successors, (188), 59 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 188 transitions. [2021-10-06 21:20:03,782 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 188 transitions. Word has length 5 [2021-10-06 21:20:03,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:03,783 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 188 transitions. [2021-10-06 21:20:03,783 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) [2021-10-06 21:20:03,783 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 188 transitions. [2021-10-06 21:20:03,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:20:03,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:03,784 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:03,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:04,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:04,004 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:20:04,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash 557270487, now seen corresponding path program 1 times [2021-10-06 21:20:04,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:04,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256750158] [2021-10-06 21:20:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:04,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:04,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:04,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:04,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:20:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:04,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:20:04,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:04,254 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-06 21:20:04,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-06 21:20:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:04,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:04,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:04,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256750158] [2021-10-06 21:20:04,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256750158] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:20:04,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:20:04,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:20:04,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320524871] [2021-10-06 21:20:04,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:20:04,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:04,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:20:04,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:20:04,675 INFO L87 Difference]: Start difference. First operand 60 states and 188 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:04,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:04,709 INFO L93 Difference]: Finished difference Result 52 states and 156 transitions. [2021-10-06 21:20:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:20:04,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 7 [2021-10-06 21:20:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:04,711 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:20:04,711 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:20:04,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:20:04,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:20:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 21:20:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 3.12) internal successors, (156), 51 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 156 transitions. [2021-10-06 21:20:04,717 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 156 transitions. Word has length 7 [2021-10-06 21:20:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:04,717 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 156 transitions. [2021-10-06 21:20:04,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 156 transitions. [2021-10-06 21:20:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:20:04,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:04,719 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:04,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:04,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:04,920 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:20:04,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:04,921 INFO L82 PathProgramCache]: Analyzing trace with hash 557270488, now seen corresponding path program 1 times [2021-10-06 21:20:04,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:04,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778418346] [2021-10-06 21:20:04,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:04,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:04,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:04,925 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:04,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:20:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:05,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:20:05,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:05,140 INFO L354 Elim1Store]: treesize reduction 147, result has 20.5 percent of original size [2021-10-06 21:20:05,145 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 41 treesize of output 65 [2021-10-06 21:20:05,177 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 175 treesize of output 167 [2021-10-06 21:20:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:05,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:05,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:05,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778418346] [2021-10-06 21:20:05,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778418346] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:20:05,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:20:05,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:20:05,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784652438] [2021-10-06 21:20:05,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:20:05,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:20:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:05,810 INFO L87 Difference]: Start difference. First operand 52 states and 156 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:05,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:05,835 INFO L93 Difference]: Finished difference Result 44 states and 124 transitions. [2021-10-06 21:20:05,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:20:05,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:20:05,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:05,838 INFO L225 Difference]: With dead ends: 44 [2021-10-06 21:20:05,838 INFO L226 Difference]: Without dead ends: 44 [2021-10-06 21:20:05,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-06 21:20:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-06 21:20:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 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) [2021-10-06 21:20:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 124 transitions. [2021-10-06 21:20:05,842 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 124 transitions. Word has length 7 [2021-10-06 21:20:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:05,843 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 124 transitions. [2021-10-06 21:20:05,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:05,843 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 124 transitions. [2021-10-06 21:20:05,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:20:05,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:05,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:05,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-06 21:20:06,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:06,056 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)] === [2021-10-06 21:20:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:06,057 INFO L82 PathProgramCache]: Analyzing trace with hash 2066863019, now seen corresponding path program 1 times [2021-10-06 21:20:06,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:06,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197141188] [2021-10-06 21:20:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:06,058 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:06,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:06,060 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:06,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:20:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:06,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:20:06,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:06,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:06,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:06,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197141188] [2021-10-06 21:20:06,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197141188] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:20:06,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:20:06,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:20:06,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760424000] [2021-10-06 21:20:06,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:20:06,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:20:06,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:06,227 INFO L87 Difference]: Start difference. First operand 44 states and 124 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:06,237 INFO L93 Difference]: Finished difference Result 58 states and 168 transitions. [2021-10-06 21:20:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:20:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 16 [2021-10-06 21:20:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:06,239 INFO L225 Difference]: With dead ends: 58 [2021-10-06 21:20:06,239 INFO L226 Difference]: Without dead ends: 58 [2021-10-06 21:20:06,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-06 21:20:06,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-06 21:20:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.9473684210526314) internal successors, (168), 57 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 168 transitions. [2021-10-06 21:20:06,245 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 168 transitions. Word has length 16 [2021-10-06 21:20:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:06,245 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 168 transitions. [2021-10-06 21:20:06,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 168 transitions. [2021-10-06 21:20:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:20:06,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:06,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:06,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:06,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:06,461 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)] === [2021-10-06 21:20:06,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:06,462 INFO L82 PathProgramCache]: Analyzing trace with hash -188273523, now seen corresponding path program 1 times [2021-10-06 21:20:06,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:06,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308588013] [2021-10-06 21:20:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:06,463 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:06,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:06,464 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:06,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:20:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:06,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:20:06,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:06,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:06,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:06,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308588013] [2021-10-06 21:20:06,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308588013] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:06,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:06,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:20:06,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362936732] [2021-10-06 21:20:06,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:20:06,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:20:06,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:20:06,733 INFO L87 Difference]: Start difference. First operand 58 states and 168 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:06,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:06,754 INFO L93 Difference]: Finished difference Result 72 states and 212 transitions. [2021-10-06 21:20:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:20:06,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 17 [2021-10-06 21:20:06,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:06,757 INFO L225 Difference]: With dead ends: 72 [2021-10-06 21:20:06,757 INFO L226 Difference]: Without dead ends: 72 [2021-10-06 21:20:06,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:20:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-06 21:20:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-06 21:20:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.9859154929577465) internal successors, (212), 71 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 212 transitions. [2021-10-06 21:20:06,764 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 212 transitions. Word has length 17 [2021-10-06 21:20:06,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:06,764 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 212 transitions. [2021-10-06 21:20:06,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 212 transitions. [2021-10-06 21:20:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:20:06,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:06,766 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:06,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:06,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:06,979 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)] === [2021-10-06 21:20:06,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:06,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1378029589, now seen corresponding path program 2 times [2021-10-06 21:20:06,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:06,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354410112] [2021-10-06 21:20:06,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:20:06,981 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:06,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:06,982 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:06,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:20:07,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:20:07,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:07,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:20:07,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:20:07,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:20:07,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:07,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354410112] [2021-10-06 21:20:07,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354410112] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:20:07,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:20:07,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:20:07,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878240708] [2021-10-06 21:20:07,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:20:07,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:07,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:20:07,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:07,143 INFO L87 Difference]: Start difference. First operand 72 states and 212 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:07,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:07,154 INFO L93 Difference]: Finished difference Result 94 states and 284 transitions. [2021-10-06 21:20:07,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:20:07,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 18 [2021-10-06 21:20:07,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:07,156 INFO L225 Difference]: With dead ends: 94 [2021-10-06 21:20:07,156 INFO L226 Difference]: Without dead ends: 94 [2021-10-06 21:20:07,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:07,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-06 21:20:07,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-06 21:20:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 3.053763440860215) internal successors, (284), 93 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 284 transitions. [2021-10-06 21:20:07,163 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 284 transitions. Word has length 18 [2021-10-06 21:20:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:07,163 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 284 transitions. [2021-10-06 21:20:07,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 284 transitions. [2021-10-06 21:20:07,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:20:07,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:07,165 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:07,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:07,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:07,378 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)] === [2021-10-06 21:20:07,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:07,379 INFO L82 PathProgramCache]: Analyzing trace with hash 301115520, now seen corresponding path program 1 times [2021-10-06 21:20:07,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:07,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474998283] [2021-10-06 21:20:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:07,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:07,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:07,381 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:07,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:20:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:07,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:20:07,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:20:07,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:20:07,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:07,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474998283] [2021-10-06 21:20:07,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474998283] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:07,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:07,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:20:07,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027421591] [2021-10-06 21:20:07,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:20:07,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:07,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:20:07,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:20:07,700 INFO L87 Difference]: Start difference. First operand 94 states and 284 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:07,730 INFO L93 Difference]: Finished difference Result 116 states and 356 transitions. [2021-10-06 21:20:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:20:07,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 19 [2021-10-06 21:20:07,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:07,732 INFO L225 Difference]: With dead ends: 116 [2021-10-06 21:20:07,732 INFO L226 Difference]: Without dead ends: 116 [2021-10-06 21:20:07,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:20:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-06 21:20:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-06 21:20:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 3.0956521739130434) internal successors, (356), 115 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 356 transitions. [2021-10-06 21:20:07,739 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 356 transitions. Word has length 19 [2021-10-06 21:20:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:07,740 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 356 transitions. [2021-10-06 21:20:07,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 356 transitions. [2021-10-06 21:20:07,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:20:07,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:07,742 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:07,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:07,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:07,954 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)] === [2021-10-06 21:20:07,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:07,955 INFO L82 PathProgramCache]: Analyzing trace with hash 815006347, now seen corresponding path program 2 times [2021-10-06 21:20:07,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:07,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761972807] [2021-10-06 21:20:07,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:20:07,957 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:07,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:07,958 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:07,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:20:08,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:20:08,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:08,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:20:08,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:20:08,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:20:08,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:08,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761972807] [2021-10-06 21:20:08,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761972807] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:20:08,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:20:08,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:20:08,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738023041] [2021-10-06 21:20:08,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:20:08,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:08,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:20:08,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:08,203 INFO L87 Difference]: Start difference. First operand 116 states and 356 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:08,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:08,214 INFO L93 Difference]: Finished difference Result 164 states and 516 transitions. [2021-10-06 21:20:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:20:08,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:20:08,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:08,217 INFO L225 Difference]: With dead ends: 164 [2021-10-06 21:20:08,217 INFO L226 Difference]: Without dead ends: 164 [2021-10-06 21:20:08,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:20:08,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-06 21:20:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-10-06 21:20:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 3.165644171779141) internal successors, (516), 163 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 516 transitions. [2021-10-06 21:20:08,230 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 516 transitions. Word has length 20 [2021-10-06 21:20:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:08,230 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 516 transitions. [2021-10-06 21:20:08,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:08,231 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 516 transitions. [2021-10-06 21:20:08,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:20:08,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:08,239 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:08,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:08,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:08,452 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)] === [2021-10-06 21:20:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:08,453 INFO L82 PathProgramCache]: Analyzing trace with hash 18252765, now seen corresponding path program 1 times [2021-10-06 21:20:08,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:08,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288369873] [2021-10-06 21:20:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:08,455 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:08,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:08,456 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:08,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:20:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:08,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:20:08,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:20:08,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:20:08,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:08,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288369873] [2021-10-06 21:20:08,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288369873] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:08,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:08,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:20:08,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387669311] [2021-10-06 21:20:08,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:20:08,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:08,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:20:08,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:20:08,827 INFO L87 Difference]: Start difference. First operand 164 states and 516 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:08,849 INFO L93 Difference]: Finished difference Result 212 states and 676 transitions. [2021-10-06 21:20:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:20:08,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:20:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:08,851 INFO L225 Difference]: With dead ends: 212 [2021-10-06 21:20:08,852 INFO L226 Difference]: Without dead ends: 212 [2021-10-06 21:20:08,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:20:08,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-06 21:20:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-10-06 21:20:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.203791469194313) internal successors, (676), 211 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 676 transitions. [2021-10-06 21:20:08,861 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 676 transitions. Word has length 21 [2021-10-06 21:20:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:08,862 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 676 transitions. [2021-10-06 21:20:08,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:08,862 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 676 transitions. [2021-10-06 21:20:08,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:20:08,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:08,863 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:08,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:09,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:09,076 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)] === [2021-10-06 21:20:09,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:09,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1088695499, now seen corresponding path program 2 times [2021-10-06 21:20:09,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:09,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251756459] [2021-10-06 21:20:09,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:20:09,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:09,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:09,080 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:09,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:20:09,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:20:09,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:09,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:20:09,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:09,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:10,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:10,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251756459] [2021-10-06 21:20:10,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251756459] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:10,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:10,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:20:10,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314318287] [2021-10-06 21:20:10,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:20:10,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:10,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:20:10,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:20:10,549 INFO L87 Difference]: Start difference. First operand 212 states and 676 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:16,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:16,182 INFO L93 Difference]: Finished difference Result 1587 states and 5021 transitions. [2021-10-06 21:20:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-06 21:20:16,183 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:20:16,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:16,198 INFO L225 Difference]: With dead ends: 1587 [2021-10-06 21:20:16,198 INFO L226 Difference]: Without dead ends: 1580 [2021-10-06 21:20:16,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 5356.0ms TimeCoverageRelationStatistics Valid=1187, Invalid=3643, Unknown=0, NotChecked=0, Total=4830 [2021-10-06 21:20:16,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-10-06 21:20:16,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 530. [2021-10-06 21:20:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.6843100189035916) internal successors, (1949), 529 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1949 transitions. [2021-10-06 21:20:16,239 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1949 transitions. Word has length 22 [2021-10-06 21:20:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:16,240 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 1949 transitions. [2021-10-06 21:20:16,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1949 transitions. [2021-10-06 21:20:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:20:16,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:16,243 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:16,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:16,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:16,457 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)] === [2021-10-06 21:20:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:16,458 INFO L82 PathProgramCache]: Analyzing trace with hash -448723731, now seen corresponding path program 3 times [2021-10-06 21:20:16,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:16,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756184754] [2021-10-06 21:20:16,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:20:16,459 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:16,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:16,461 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:16,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:20:16,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:20:16,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:16,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:20:16,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:17,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:17,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:17,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756184754] [2021-10-06 21:20:17,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756184754] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:17,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:17,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:20:17,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925854734] [2021-10-06 21:20:17,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:20:17,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:17,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:20:17,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:20:17,930 INFO L87 Difference]: Start difference. First operand 530 states and 1949 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:24,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:24,885 INFO L93 Difference]: Finished difference Result 2601 states and 8611 transitions. [2021-10-06 21:20:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-06 21:20:24,886 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:20:24,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:24,909 INFO L225 Difference]: With dead ends: 2601 [2021-10-06 21:20:24,909 INFO L226 Difference]: Without dead ends: 2594 [2021-10-06 21:20:24,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 6562.3ms TimeCoverageRelationStatistics Valid=1519, Invalid=5287, Unknown=0, NotChecked=0, Total=6806 [2021-10-06 21:20:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2021-10-06 21:20:24,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 838. [2021-10-06 21:20:25,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 3.953405017921147) internal successors, (3309), 837 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:25,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 3309 transitions. [2021-10-06 21:20:25,007 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 3309 transitions. Word has length 22 [2021-10-06 21:20:25,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:25,008 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 3309 transitions. [2021-10-06 21:20:25,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 3309 transitions. [2021-10-06 21:20:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:20:25,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:25,014 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:25,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:25,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:25,227 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)] === [2021-10-06 21:20:25,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:25,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1883791221, now seen corresponding path program 4 times [2021-10-06 21:20:25,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:25,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173231241] [2021-10-06 21:20:25,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:20:25,230 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:25,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:25,231 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:25,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:20:25,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:20:25,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:25,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:20:25,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:26,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:26,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:26,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173231241] [2021-10-06 21:20:26,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173231241] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:26,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:26,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:20:26,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101222889] [2021-10-06 21:20:26,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:20:26,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:20:26,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:20:26,823 INFO L87 Difference]: Start difference. First operand 838 states and 3309 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:31,871 INFO L93 Difference]: Finished difference Result 2500 states and 8942 transitions. [2021-10-06 21:20:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:20:31,872 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:20:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:31,896 INFO L225 Difference]: With dead ends: 2500 [2021-10-06 21:20:31,896 INFO L226 Difference]: Without dead ends: 2486 [2021-10-06 21:20:31,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 4802.5ms TimeCoverageRelationStatistics Valid=956, Invalid=2704, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:20:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2021-10-06 21:20:31,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 1078. [2021-10-06 21:20:31,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 4.102135561745589) internal successors, (4418), 1077 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 4418 transitions. [2021-10-06 21:20:31,975 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 4418 transitions. Word has length 22 [2021-10-06 21:20:31,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:31,976 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 4418 transitions. [2021-10-06 21:20:31,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:31,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 4418 transitions. [2021-10-06 21:20:31,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:20:31,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:31,981 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:31,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:32,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:32,197 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)] === [2021-10-06 21:20:32,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:32,198 INFO L82 PathProgramCache]: Analyzing trace with hash -308325621, now seen corresponding path program 5 times [2021-10-06 21:20:32,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:32,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508688110] [2021-10-06 21:20:32,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:20:32,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:32,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:32,201 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:32,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:20:32,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:20:32,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:32,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:20:32,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:32,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:33,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:33,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508688110] [2021-10-06 21:20:33,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508688110] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:33,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:33,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-06 21:20:33,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081936562] [2021-10-06 21:20:33,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:20:33,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:33,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:20:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:20:33,577 INFO L87 Difference]: Start difference. First operand 1078 states and 4418 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:37,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:37,472 INFO L93 Difference]: Finished difference Result 2975 states and 10627 transitions. [2021-10-06 21:20:37,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 21:20:37,473 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:20:37,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:37,500 INFO L225 Difference]: With dead ends: 2975 [2021-10-06 21:20:37,500 INFO L226 Difference]: Without dead ends: 2968 [2021-10-06 21:20:37,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 3652.8ms TimeCoverageRelationStatistics Valid=975, Invalid=3057, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 21:20:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2021-10-06 21:20:37,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1262. [2021-10-06 21:20:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 4.137192704203014) internal successors, (5217), 1261 states have internal predecessors, (5217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 5217 transitions. [2021-10-06 21:20:37,592 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 5217 transitions. Word has length 22 [2021-10-06 21:20:37,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:37,592 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 5217 transitions. [2021-10-06 21:20:37,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:37,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 5217 transitions. [2021-10-06 21:20:37,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:20:37,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:37,599 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:37,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-06 21:20:37,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:37,812 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)] === [2021-10-06 21:20:37,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:37,813 INFO L82 PathProgramCache]: Analyzing trace with hash -843555423, now seen corresponding path program 6 times [2021-10-06 21:20:37,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:37,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182455605] [2021-10-06 21:20:37,814 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:20:37,814 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:37,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:37,815 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:37,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:20:38,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:20:38,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:38,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:20:38,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:38,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:39,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:39,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182455605] [2021-10-06 21:20:39,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182455605] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:39,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:39,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-06 21:20:39,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385200957] [2021-10-06 21:20:39,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:20:39,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:39,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:20:39,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:20:39,483 INFO L87 Difference]: Start difference. First operand 1262 states and 5217 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:45,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:45,640 INFO L93 Difference]: Finished difference Result 3921 states and 15069 transitions. [2021-10-06 21:20:45,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-10-06 21:20:45,640 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:20:45,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:45,675 INFO L225 Difference]: With dead ends: 3921 [2021-10-06 21:20:45,676 INFO L226 Difference]: Without dead ends: 3914 [2021-10-06 21:20:45,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2091 ImplicationChecksByTransitivity, 5782.7ms TimeCoverageRelationStatistics Valid=1355, Invalid=5287, Unknown=0, NotChecked=0, Total=6642 [2021-10-06 21:20:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2021-10-06 21:20:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 1868. [2021-10-06 21:20:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 4.2956614890198175) internal successors, (8020), 1867 states have internal predecessors, (8020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:45,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 8020 transitions. [2021-10-06 21:20:45,835 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 8020 transitions. Word has length 22 [2021-10-06 21:20:45,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:45,835 INFO L470 AbstractCegarLoop]: Abstraction has 1868 states and 8020 transitions. [2021-10-06 21:20:45,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:45,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 8020 transitions. [2021-10-06 21:20:45,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:20:45,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:45,846 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:45,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:46,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:46,060 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)] === [2021-10-06 21:20:46,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:46,061 INFO L82 PathProgramCache]: Analyzing trace with hash -263237735, now seen corresponding path program 7 times [2021-10-06 21:20:46,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:46,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185618910] [2021-10-06 21:20:46,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:20:46,062 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:46,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:46,063 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:46,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:20:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:46,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:20:46,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:46,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:47,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:47,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185618910] [2021-10-06 21:20:47,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185618910] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:47,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:47,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:20:47,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304403477] [2021-10-06 21:20:47,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:20:47,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:20:47,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:20:47,679 INFO L87 Difference]: Start difference. First operand 1868 states and 8020 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:51,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:51,967 INFO L93 Difference]: Finished difference Result 4177 states and 16485 transitions. [2021-10-06 21:20:51,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:20:51,968 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:20:51,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:51,991 INFO L225 Difference]: With dead ends: 4177 [2021-10-06 21:20:51,992 INFO L226 Difference]: Without dead ends: 4170 [2021-10-06 21:20:51,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 4145.4ms TimeCoverageRelationStatistics Valid=848, Invalid=2458, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:20:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-10-06 21:20:52,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 1998. [2021-10-06 21:20:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1997 states have (on average 4.329494241362043) internal successors, (8646), 1997 states have internal predecessors, (8646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:52,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 8646 transitions. [2021-10-06 21:20:52,133 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 8646 transitions. Word has length 22 [2021-10-06 21:20:52,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:52,133 INFO L470 AbstractCegarLoop]: Abstraction has 1998 states and 8646 transitions. [2021-10-06 21:20:52,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:52,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 8646 transitions. [2021-10-06 21:20:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:20:52,143 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:52,143 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:20:52,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:52,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:20:52,357 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)] === [2021-10-06 21:20:52,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:52,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1687748597, now seen corresponding path program 8 times [2021-10-06 21:20:52,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:52,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091603943] [2021-10-06 21:20:52,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:20:52,359 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:52,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:52,362 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:20:52,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:20:52,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:20:52,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:20:52,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:20:52,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:53,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:54,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:54,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091603943] [2021-10-06 21:20:54,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091603943] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:20:54,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:20:54,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:20:54,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368812706] [2021-10-06 21:20:54,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:20:54,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:54,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:20:54,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:20:54,074 INFO L87 Difference]: Start difference. First operand 1998 states and 8646 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:59,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:59,799 INFO L93 Difference]: Finished difference Result 5219 states and 20374 transitions. [2021-10-06 21:20:59,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-06 21:20:59,800 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:20:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:59,830 INFO L225 Difference]: With dead ends: 5219 [2021-10-06 21:20:59,830 INFO L226 Difference]: Without dead ends: 5212 [2021-10-06 21:20:59,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 5594.3ms TimeCoverageRelationStatistics Valid=1088, Invalid=3334, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:20:59,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2021-10-06 21:20:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 2168. [2021-10-06 21:21:00,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2167 states have (on average 4.359944623904015) internal successors, (9448), 2167 states have internal predecessors, (9448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 9448 transitions. [2021-10-06 21:21:00,022 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 9448 transitions. Word has length 22 [2021-10-06 21:21:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:00,023 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 9448 transitions. [2021-10-06 21:21:00,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 9448 transitions. [2021-10-06 21:21:00,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:21:00,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:00,035 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:00,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:00,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:00,248 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)] === [2021-10-06 21:21:00,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:00,249 INFO L82 PathProgramCache]: Analyzing trace with hash -348227239, now seen corresponding path program 9 times [2021-10-06 21:21:00,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:00,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066927084] [2021-10-06 21:21:00,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:21:00,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:00,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:00,251 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:00,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:21:00,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:21:00,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:00,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:21:00,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:01,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:02,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:02,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066927084] [2021-10-06 21:21:02,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066927084] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:02,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:02,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-06 21:21:02,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734320083] [2021-10-06 21:21:02,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:21:02,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:02,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:21:02,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:21:02,018 INFO L87 Difference]: Start difference. First operand 2168 states and 9448 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:05,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:05,021 INFO L93 Difference]: Finished difference Result 5235 states and 21088 transitions. [2021-10-06 21:21:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:21:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:21:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:05,054 INFO L225 Difference]: With dead ends: 5235 [2021-10-06 21:21:05,054 INFO L226 Difference]: Without dead ends: 5228 [2021-10-06 21:21:05,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2890.9ms TimeCoverageRelationStatistics Valid=555, Invalid=1895, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:21:05,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2021-10-06 21:21:05,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 2500. [2021-10-06 21:21:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 4.423369347739095) internal successors, (11054), 2499 states have internal predecessors, (11054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 11054 transitions. [2021-10-06 21:21:05,239 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 11054 transitions. Word has length 22 [2021-10-06 21:21:05,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:05,239 INFO L470 AbstractCegarLoop]: Abstraction has 2500 states and 11054 transitions. [2021-10-06 21:21:05,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 11054 transitions. [2021-10-06 21:21:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:21:05,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:05,252 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:05,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:05,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:05,465 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)] === [2021-10-06 21:21:05,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:05,466 INFO L82 PathProgramCache]: Analyzing trace with hash -599189095, now seen corresponding path program 10 times [2021-10-06 21:21:05,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:05,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212724309] [2021-10-06 21:21:05,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:21:05,467 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:05,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:05,469 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:05,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:21:05,816 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:21:05,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:05,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:21:05,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:06,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:07,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:07,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212724309] [2021-10-06 21:21:07,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212724309] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:07,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:07,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:21:07,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753440662] [2021-10-06 21:21:07,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:21:07,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:07,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:21:07,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:21:07,277 INFO L87 Difference]: Start difference. First operand 2500 states and 11054 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:14,137 INFO L93 Difference]: Finished difference Result 5635 states and 22121 transitions. [2021-10-06 21:21:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-06 21:21:14,137 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:21:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:14,162 INFO L225 Difference]: With dead ends: 5635 [2021-10-06 21:21:14,162 INFO L226 Difference]: Without dead ends: 5628 [2021-10-06 21:21:14,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 6703.3ms TimeCoverageRelationStatistics Valid=1288, Invalid=4262, Unknown=0, NotChecked=0, Total=5550 [2021-10-06 21:21:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2021-10-06 21:21:14,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 2740. [2021-10-06 21:21:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 2739 states have (on average 4.424242424242424) internal successors, (12118), 2739 states have internal predecessors, (12118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 12118 transitions. [2021-10-06 21:21:14,357 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 12118 transitions. Word has length 22 [2021-10-06 21:21:14,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:14,358 INFO L470 AbstractCegarLoop]: Abstraction has 2740 states and 12118 transitions. [2021-10-06 21:21:14,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:14,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 12118 transitions. [2021-10-06 21:21:14,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:21:14,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:14,375 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:14,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:14,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:14,588 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)] === [2021-10-06 21:21:14,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:14,589 INFO L82 PathProgramCache]: Analyzing trace with hash -2136608325, now seen corresponding path program 11 times [2021-10-06 21:21:14,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:14,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981314204] [2021-10-06 21:21:14,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:21:14,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:14,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:14,592 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:14,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:21:15,104 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:21:15,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:15,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:21:15,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:15,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:16,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:16,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981314204] [2021-10-06 21:21:16,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981314204] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:16,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:16,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:21:16,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886005911] [2021-10-06 21:21:16,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:21:16,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:16,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:21:16,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:21:16,551 INFO L87 Difference]: Start difference. First operand 2740 states and 12118 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:24,727 INFO L93 Difference]: Finished difference Result 6843 states and 27360 transitions. [2021-10-06 21:21:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-06 21:21:24,728 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:21:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:24,747 INFO L225 Difference]: With dead ends: 6843 [2021-10-06 21:21:24,747 INFO L226 Difference]: Without dead ends: 6836 [2021-10-06 21:21:24,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3058 ImplicationChecksByTransitivity, 7515.8ms TimeCoverageRelationStatistics Valid=1737, Invalid=7575, Unknown=0, NotChecked=0, Total=9312 [2021-10-06 21:21:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6836 states. [2021-10-06 21:21:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6836 to 3340. [2021-10-06 21:21:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 3339 states have (on average 4.468403713686732) internal successors, (14920), 3339 states have internal predecessors, (14920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 14920 transitions. [2021-10-06 21:21:24,926 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 14920 transitions. Word has length 22 [2021-10-06 21:21:24,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:24,927 INFO L470 AbstractCegarLoop]: Abstraction has 3340 states and 14920 transitions. [2021-10-06 21:21:24,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 14920 transitions. [2021-10-06 21:21:24,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:21:24,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:24,940 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:24,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:25,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:25,154 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)] === [2021-10-06 21:21:25,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:25,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1678878803, now seen corresponding path program 12 times [2021-10-06 21:21:25,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:25,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114559837] [2021-10-06 21:21:25,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:21:25,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:25,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:25,157 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:25,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:21:25,598 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:21:25,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:25,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:21:25,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:26,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:27,184 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:27,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114559837] [2021-10-06 21:21:27,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114559837] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:27,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:27,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:21:27,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996434929] [2021-10-06 21:21:27,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:21:27,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:27,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:21:27,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:21:27,186 INFO L87 Difference]: Start difference. First operand 3340 states and 14920 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:32,341 INFO L93 Difference]: Finished difference Result 7019 states and 29333 transitions. [2021-10-06 21:21:32,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 21:21:32,342 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:21:32,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:32,364 INFO L225 Difference]: With dead ends: 7019 [2021-10-06 21:21:32,364 INFO L226 Difference]: Without dead ends: 7012 [2021-10-06 21:21:32,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 4923.4ms TimeCoverageRelationStatistics Valid=858, Invalid=2802, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:21:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7012 states. [2021-10-06 21:21:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7012 to 3654. [2021-10-06 21:21:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 4.511086777990693) internal successors, (16479), 3653 states have internal predecessors, (16479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:32,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 16479 transitions. [2021-10-06 21:21:32,596 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 16479 transitions. Word has length 22 [2021-10-06 21:21:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:32,597 INFO L470 AbstractCegarLoop]: Abstraction has 3654 states and 16479 transitions. [2021-10-06 21:21:32,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 16479 transitions. [2021-10-06 21:21:32,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:21:32,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:32,611 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:32,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:32,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:32,825 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)] === [2021-10-06 21:21:32,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:32,826 INFO L82 PathProgramCache]: Analyzing trace with hash -339357445, now seen corresponding path program 13 times [2021-10-06 21:21:32,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:32,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277147439] [2021-10-06 21:21:32,827 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:21:32,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:32,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:32,829 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:32,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:21:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:33,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:21:33,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:33,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:34,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:34,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277147439] [2021-10-06 21:21:34,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277147439] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:34,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:34,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:21:34,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074243645] [2021-10-06 21:21:34,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:21:34,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:34,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:21:34,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:21:34,713 INFO L87 Difference]: Start difference. First operand 3654 states and 16479 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:41,512 INFO L93 Difference]: Finished difference Result 7668 states and 31412 transitions. [2021-10-06 21:21:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-06 21:21:41,513 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:21:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:41,535 INFO L225 Difference]: With dead ends: 7668 [2021-10-06 21:21:41,535 INFO L226 Difference]: Without dead ends: 7654 [2021-10-06 21:21:41,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 6576.7ms TimeCoverageRelationStatistics Valid=1113, Invalid=3309, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:21:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7654 states. [2021-10-06 21:21:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7654 to 3822. [2021-10-06 21:21:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3822 states, 3821 states have (on average 4.531274535461921) internal successors, (17314), 3821 states have internal predecessors, (17314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 17314 transitions. [2021-10-06 21:21:41,737 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 17314 transitions. Word has length 22 [2021-10-06 21:21:41,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:41,737 INFO L470 AbstractCegarLoop]: Abstraction has 3822 states and 17314 transitions. [2021-10-06 21:21:41,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:41,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 17314 transitions. [2021-10-06 21:21:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:21:41,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:41,753 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:41,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:41,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:41,967 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)] === [2021-10-06 21:21:41,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:41,968 INFO L82 PathProgramCache]: Analyzing trace with hash -996979283, now seen corresponding path program 14 times [2021-10-06 21:21:41,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:41,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639309911] [2021-10-06 21:21:41,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:21:41,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:41,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:41,971 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:41,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:21:42,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:21:42,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:42,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:21:42,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:43,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:43,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:43,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639309911] [2021-10-06 21:21:43,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639309911] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:43,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:43,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:21:43,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219950978] [2021-10-06 21:21:43,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:21:43,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:43,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:21:43,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:21:43,857 INFO L87 Difference]: Start difference. First operand 3822 states and 17314 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:50,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:50,626 INFO L93 Difference]: Finished difference Result 7951 states and 32395 transitions. [2021-10-06 21:21:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-06 21:21:50,627 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:21:50,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:50,652 INFO L225 Difference]: With dead ends: 7951 [2021-10-06 21:21:50,652 INFO L226 Difference]: Without dead ends: 7944 [2021-10-06 21:21:50,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 6473.7ms TimeCoverageRelationStatistics Valid=1186, Invalid=4070, Unknown=0, NotChecked=0, Total=5256 [2021-10-06 21:21:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7944 states. [2021-10-06 21:21:50,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7944 to 4088. [2021-10-06 21:21:50,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 4087 states have (on average 4.552238805970149) internal successors, (18605), 4087 states have internal predecessors, (18605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 18605 transitions. [2021-10-06 21:21:50,837 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 18605 transitions. Word has length 22 [2021-10-06 21:21:50,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:50,838 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 18605 transitions. [2021-10-06 21:21:50,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 18605 transitions. [2021-10-06 21:21:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:21:50,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:50,849 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:50,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:51,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:51,050 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)] === [2021-10-06 21:21:51,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:51,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1862920523, now seen corresponding path program 15 times [2021-10-06 21:21:51,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:51,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41081979] [2021-10-06 21:21:51,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:21:51,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:51,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:51,053 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:51,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:21:51,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:21:51,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:51,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:21:51,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:52,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:53,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:53,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41081979] [2021-10-06 21:21:53,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41081979] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:53,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:53,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:21:53,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091485066] [2021-10-06 21:21:53,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:21:53,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:53,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:21:53,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:21:53,141 INFO L87 Difference]: Start difference. First operand 4088 states and 18605 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:58,721 INFO L93 Difference]: Finished difference Result 7674 states and 31901 transitions. [2021-10-06 21:21:58,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:21:58,722 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:21:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:58,748 INFO L225 Difference]: With dead ends: 7674 [2021-10-06 21:21:58,748 INFO L226 Difference]: Without dead ends: 7660 [2021-10-06 21:21:58,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 5287.3ms TimeCoverageRelationStatistics Valid=922, Invalid=2618, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:21:58,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7660 states. [2021-10-06 21:21:58,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7660 to 4268. [2021-10-06 21:21:58,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4268 states, 4267 states have (on average 4.568549332083431) internal successors, (19494), 4267 states have internal predecessors, (19494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:58,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 19494 transitions. [2021-10-06 21:21:58,930 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 19494 transitions. Word has length 22 [2021-10-06 21:21:58,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:58,930 INFO L470 AbstractCegarLoop]: Abstraction has 4268 states and 19494 transitions. [2021-10-06 21:21:58,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:58,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 19494 transitions. [2021-10-06 21:21:58,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:21:58,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:58,949 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:58,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:59,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:59,163 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)] === [2021-10-06 21:21:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:59,163 INFO L82 PathProgramCache]: Analyzing trace with hash -754713319, now seen corresponding path program 16 times [2021-10-06 21:21:59,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:59,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781359215] [2021-10-06 21:21:59,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:21:59,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:59,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:59,166 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:59,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:21:59,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:21:59,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:59,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:21:59,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:00,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:01,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:01,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781359215] [2021-10-06 21:22:01,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781359215] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:01,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:01,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:22:01,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28906998] [2021-10-06 21:22:01,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:22:01,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:01,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:22:01,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:22:01,256 INFO L87 Difference]: Start difference. First operand 4268 states and 19494 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:07,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:07,123 INFO L93 Difference]: Finished difference Result 8242 states and 34622 transitions. [2021-10-06 21:22:07,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:22:07,125 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:22:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:07,150 INFO L225 Difference]: With dead ends: 8242 [2021-10-06 21:22:07,150 INFO L226 Difference]: Without dead ends: 8228 [2021-10-06 21:22:07,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 5653.7ms TimeCoverageRelationStatistics Valid=894, Invalid=2412, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:22:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8228 states. [2021-10-06 21:22:07,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8228 to 4350. [2021-10-06 21:22:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4350 states, 4349 states have (on average 4.5861117498275465) internal successors, (19945), 4349 states have internal predecessors, (19945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 19945 transitions. [2021-10-06 21:22:07,338 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 19945 transitions. Word has length 22 [2021-10-06 21:22:07,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:07,338 INFO L470 AbstractCegarLoop]: Abstraction has 4350 states and 19945 transitions. [2021-10-06 21:22:07,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:07,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 19945 transitions. [2021-10-06 21:22:07,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:22:07,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:07,356 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:07,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-10-06 21:22:07,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:07,571 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)] === [2021-10-06 21:22:07,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:07,572 INFO L82 PathProgramCache]: Analyzing trace with hash 652756761, now seen corresponding path program 17 times [2021-10-06 21:22:07,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:07,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056642372] [2021-10-06 21:22:07,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:22:07,573 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:07,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:07,575 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:07,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:22:08,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:22:08,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:08,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:22:08,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:08,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:10,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:10,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056642372] [2021-10-06 21:22:10,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056642372] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:10,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:10,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-10-06 21:22:10,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179311635] [2021-10-06 21:22:10,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:22:10,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:10,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:22:10,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:22:10,041 INFO L87 Difference]: Start difference. First operand 4350 states and 19945 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:13,995 INFO L93 Difference]: Finished difference Result 8423 states and 36466 transitions. [2021-10-06 21:22:13,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:22:13,995 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:22:13,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:14,025 INFO L225 Difference]: With dead ends: 8423 [2021-10-06 21:22:14,025 INFO L226 Difference]: Without dead ends: 8416 [2021-10-06 21:22:14,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 3509.5ms TimeCoverageRelationStatistics Valid=571, Invalid=1979, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:22:14,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2021-10-06 21:22:14,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 4978. [2021-10-06 21:22:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4978 states, 4977 states have (on average 4.654611211573237) internal successors, (23166), 4977 states have internal predecessors, (23166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4978 states to 4978 states and 23166 transitions. [2021-10-06 21:22:14,231 INFO L78 Accepts]: Start accepts. Automaton has 4978 states and 23166 transitions. Word has length 22 [2021-10-06 21:22:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:14,231 INFO L470 AbstractCegarLoop]: Abstraction has 4978 states and 23166 transitions. [2021-10-06 21:22:14,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4978 states and 23166 transitions. [2021-10-06 21:22:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:22:14,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:14,248 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:14,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-06 21:22:14,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:14,449 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)] === [2021-10-06 21:22:14,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:14,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1405387087, now seen corresponding path program 18 times [2021-10-06 21:22:14,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:14,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169469938] [2021-10-06 21:22:14,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:22:14,451 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:14,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:14,453 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:14,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:22:15,143 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:22:15,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:15,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:22:15,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:15,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:16,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:16,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169469938] [2021-10-06 21:22:16,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169469938] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:16,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:16,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-06 21:22:16,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026670002] [2021-10-06 21:22:16,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:22:16,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:16,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:22:16,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:22:16,645 INFO L87 Difference]: Start difference. First operand 4978 states and 23166 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:20,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:20,634 INFO L93 Difference]: Finished difference Result 9065 states and 38694 transitions. [2021-10-06 21:22:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:22:20,634 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:22:20,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:20,667 INFO L225 Difference]: With dead ends: 9065 [2021-10-06 21:22:20,668 INFO L226 Difference]: Without dead ends: 9044 [2021-10-06 21:22:20,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 3787.3ms TimeCoverageRelationStatistics Valid=653, Invalid=1797, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:22:20,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9044 states. [2021-10-06 21:22:20,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9044 to 5260. [2021-10-06 21:22:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 4.674843126069595) internal successors, (24585), 5259 states have internal predecessors, (24585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:20,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 24585 transitions. [2021-10-06 21:22:20,912 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 24585 transitions. Word has length 22 [2021-10-06 21:22:20,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:20,913 INFO L470 AbstractCegarLoop]: Abstraction has 5260 states and 24585 transitions. [2021-10-06 21:22:20,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:20,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 24585 transitions. [2021-10-06 21:22:20,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:22:20,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:20,929 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:20,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:21,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:21,130 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)] === [2021-10-06 21:22:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:21,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1492305665, now seen corresponding path program 19 times [2021-10-06 21:22:21,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:21,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638411572] [2021-10-06 21:22:21,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:22:21,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:21,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:21,134 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:21,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:22:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:21,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:22:21,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:22,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:23,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:23,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:23,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638411572] [2021-10-06 21:22:23,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638411572] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:23,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:23,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:22:23,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108565193] [2021-10-06 21:22:23,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:22:23,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:23,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:22:23,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:22:23,298 INFO L87 Difference]: Start difference. First operand 5260 states and 24585 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:27,547 INFO L93 Difference]: Finished difference Result 9206 states and 39380 transitions. [2021-10-06 21:22:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:22:27,548 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:22:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:27,592 INFO L225 Difference]: With dead ends: 9206 [2021-10-06 21:22:27,592 INFO L226 Difference]: Without dead ends: 9192 [2021-10-06 21:22:27,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 4301.4ms TimeCoverageRelationStatistics Valid=683, Invalid=1767, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:22:27,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9192 states. [2021-10-06 21:22:27,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9192 to 5420. [2021-10-06 21:22:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5420 states, 5419 states have (on average 4.687580734452851) internal successors, (25402), 5419 states have internal predecessors, (25402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 25402 transitions. [2021-10-06 21:22:27,882 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 25402 transitions. Word has length 22 [2021-10-06 21:22:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:27,883 INFO L470 AbstractCegarLoop]: Abstraction has 5420 states and 25402 transitions. [2021-10-06 21:22:27,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:27,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 25402 transitions. [2021-10-06 21:22:27,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:22:27,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:27,897 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:27,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:28,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:28,105 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)] === [2021-10-06 21:22:28,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:28,106 INFO L82 PathProgramCache]: Analyzing trace with hash -2057757373, now seen corresponding path program 20 times [2021-10-06 21:22:28,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:28,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819961836] [2021-10-06 21:22:28,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:22:28,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:28,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:28,109 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:28,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:22:28,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:22:28,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:28,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:22:28,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:29,376 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:29,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:30,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:30,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819961836] [2021-10-06 21:22:30,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819961836] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:30,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:30,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:22:30,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881184819] [2021-10-06 21:22:30,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:22:30,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:30,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:22:30,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:22:30,199 INFO L87 Difference]: Start difference. First operand 5420 states and 25402 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:36,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:36,734 INFO L93 Difference]: Finished difference Result 9775 states and 41626 transitions. [2021-10-06 21:22:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-06 21:22:36,735 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:22:36,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:36,770 INFO L225 Difference]: With dead ends: 9775 [2021-10-06 21:22:36,770 INFO L226 Difference]: Without dead ends: 9768 [2021-10-06 21:22:36,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 6268.0ms TimeCoverageRelationStatistics Valid=1035, Invalid=3521, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 21:22:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2021-10-06 21:22:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 5598. [2021-10-06 21:22:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5598 states, 5597 states have (on average 4.6907271752724675) internal successors, (26254), 5597 states have internal predecessors, (26254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 26254 transitions. [2021-10-06 21:22:37,080 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 26254 transitions. Word has length 22 [2021-10-06 21:22:37,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:37,080 INFO L470 AbstractCegarLoop]: Abstraction has 5598 states and 26254 transitions. [2021-10-06 21:22:37,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 26254 transitions. [2021-10-06 21:22:37,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:22:37,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:37,096 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:37,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:37,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:37,305 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)] === [2021-10-06 21:22:37,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:37,306 INFO L82 PathProgramCache]: Analyzing trace with hash 802142433, now seen corresponding path program 21 times [2021-10-06 21:22:37,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:37,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494219930] [2021-10-06 21:22:37,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:22:37,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:37,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:37,309 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:37,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:22:38,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:22:38,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:38,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:22:38,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:38,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:39,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:39,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494219930] [2021-10-06 21:22:39,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494219930] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:39,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:39,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:22:39,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588790535] [2021-10-06 21:22:39,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:22:39,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:39,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:22:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:22:39,546 INFO L87 Difference]: Start difference. First operand 5598 states and 26254 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:45,241 INFO L93 Difference]: Finished difference Result 9450 states and 40642 transitions. [2021-10-06 21:22:45,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:22:45,242 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:22:45,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:45,278 INFO L225 Difference]: With dead ends: 9450 [2021-10-06 21:22:45,278 INFO L226 Difference]: Without dead ends: 9436 [2021-10-06 21:22:45,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 5402.0ms TimeCoverageRelationStatistics Valid=942, Invalid=2718, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:22:45,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9436 states. [2021-10-06 21:22:45,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9436 to 5664. [2021-10-06 21:22:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 5663 states have (on average 4.702984283948437) internal successors, (26633), 5663 states have internal predecessors, (26633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 26633 transitions. [2021-10-06 21:22:45,584 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 26633 transitions. Word has length 22 [2021-10-06 21:22:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:45,584 INFO L470 AbstractCegarLoop]: Abstraction has 5664 states and 26633 transitions. [2021-10-06 21:22:45,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 26633 transitions. [2021-10-06 21:22:45,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:22:45,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:45,600 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:45,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:45,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:45,801 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:45,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:45,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1815491409, now seen corresponding path program 22 times [2021-10-06 21:22:45,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:45,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411768516] [2021-10-06 21:22:45,803 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:22:45,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:45,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:45,804 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:45,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:22:46,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:22:46,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:46,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:22:46,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:47,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:48,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:48,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411768516] [2021-10-06 21:22:48,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411768516] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:48,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:48,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:22:48,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222670033] [2021-10-06 21:22:48,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:22:48,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:48,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:22:48,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:22:48,110 INFO L87 Difference]: Start difference. First operand 5664 states and 26633 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:54,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:54,855 INFO L93 Difference]: Finished difference Result 10234 states and 43975 transitions. [2021-10-06 21:22:54,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-06 21:22:54,855 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:22:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:54,888 INFO L225 Difference]: With dead ends: 10234 [2021-10-06 21:22:54,888 INFO L226 Difference]: Without dead ends: 10220 [2021-10-06 21:22:54,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 6397.7ms TimeCoverageRelationStatistics Valid=1183, Invalid=3509, Unknown=0, NotChecked=0, Total=4692 [2021-10-06 21:22:54,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10220 states. [2021-10-06 21:22:55,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10220 to 5760. [2021-10-06 21:22:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5760 states, 5759 states have (on average 4.715749262024657) internal successors, (27158), 5759 states have internal predecessors, (27158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 27158 transitions. [2021-10-06 21:22:55,115 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 27158 transitions. Word has length 22 [2021-10-06 21:22:55,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:55,115 INFO L470 AbstractCegarLoop]: Abstraction has 5760 states and 27158 transitions. [2021-10-06 21:22:55,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 27158 transitions. [2021-10-06 21:22:55,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:22:55,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:55,128 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:55,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:55,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:55,329 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:55,330 INFO L82 PathProgramCache]: Analyzing trace with hash -408021329, now seen corresponding path program 23 times [2021-10-06 21:22:55,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:55,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701846667] [2021-10-06 21:22:55,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:22:55,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:55,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:55,333 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:55,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:22:56,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:22:56,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:56,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:22:56,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:56,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:57,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:57,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701846667] [2021-10-06 21:22:57,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701846667] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:57,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:57,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-06 21:22:57,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206084855] [2021-10-06 21:22:57,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:22:57,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:22:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:22:57,487 INFO L87 Difference]: Start difference. First operand 5760 states and 27158 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:02,942 INFO L93 Difference]: Finished difference Result 10755 states and 46388 transitions. [2021-10-06 21:23:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-06 21:23:02,942 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:23:02,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:02,980 INFO L225 Difference]: With dead ends: 10755 [2021-10-06 21:23:02,981 INFO L226 Difference]: Without dead ends: 10734 [2021-10-06 21:23:02,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 5152.9ms TimeCoverageRelationStatistics Valid=971, Invalid=3451, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:23:02,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10734 states. [2021-10-06 21:23:03,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10734 to 6258. [2021-10-06 21:23:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6258 states, 6257 states have (on average 4.757711363273134) internal successors, (29769), 6257 states have internal predecessors, (29769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6258 states to 6258 states and 29769 transitions. [2021-10-06 21:23:03,245 INFO L78 Accepts]: Start accepts. Automaton has 6258 states and 29769 transitions. Word has length 22 [2021-10-06 21:23:03,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:03,246 INFO L470 AbstractCegarLoop]: Abstraction has 6258 states and 29769 transitions. [2021-10-06 21:23:03,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:03,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6258 states and 29769 transitions. [2021-10-06 21:23:03,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:23:03,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:03,264 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:03,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:03,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:03,465 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:23:03,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:03,466 INFO L82 PathProgramCache]: Analyzing trace with hash -874449639, now seen corresponding path program 24 times [2021-10-06 21:23:03,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:03,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168622177] [2021-10-06 21:23:03,468 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:23:03,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:03,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:03,469 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:03,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:23:04,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:23:04,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:04,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:23:04,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:04,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:05,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:05,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168622177] [2021-10-06 21:23:05,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168622177] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:23:05,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:23:05,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:23:05,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860570082] [2021-10-06 21:23:05,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:23:05,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:23:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:23:05,771 INFO L87 Difference]: Start difference. First operand 6258 states and 29769 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:11,750 INFO L93 Difference]: Finished difference Result 10214 states and 44160 transitions. [2021-10-06 21:23:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:23:11,751 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:23:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:11,786 INFO L225 Difference]: With dead ends: 10214 [2021-10-06 21:23:11,786 INFO L226 Difference]: Without dead ends: 10200 [2021-10-06 21:23:11,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 5781.3ms TimeCoverageRelationStatistics Valid=979, Invalid=2803, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 21:23:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10200 states. [2021-10-06 21:23:12,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10200 to 6628. [2021-10-06 21:23:12,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6628 states, 6627 states have (on average 4.73426889995473) internal successors, (31374), 6627 states have internal predecessors, (31374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:12,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6628 states to 6628 states and 31374 transitions. [2021-10-06 21:23:12,058 INFO L78 Accepts]: Start accepts. Automaton has 6628 states and 31374 transitions. Word has length 22 [2021-10-06 21:23:12,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:12,058 INFO L470 AbstractCegarLoop]: Abstraction has 6628 states and 31374 transitions. [2021-10-06 21:23:12,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:12,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6628 states and 31374 transitions. [2021-10-06 21:23:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:23:12,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:12,074 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:12,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:12,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:12,288 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:23:12,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:12,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1409679441, now seen corresponding path program 25 times [2021-10-06 21:23:12,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:12,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074893947] [2021-10-06 21:23:12,290 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:23:12,291 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:12,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:12,292 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:12,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:23:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:23:13,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:23:13,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:13,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:14,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:14,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074893947] [2021-10-06 21:23:14,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074893947] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:23:14,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:23:14,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:23:14,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127056096] [2021-10-06 21:23:14,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:23:14,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:14,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:23:14,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:23:14,573 INFO L87 Difference]: Start difference. First operand 6628 states and 31374 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:22,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:22,089 INFO L93 Difference]: Finished difference Result 10724 states and 46260 transitions. [2021-10-06 21:23:22,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-06 21:23:22,090 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:23:22,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:22,130 INFO L225 Difference]: With dead ends: 10724 [2021-10-06 21:23:22,130 INFO L226 Difference]: Without dead ends: 10710 [2021-10-06 21:23:22,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1557 ImplicationChecksByTransitivity, 7174.2ms TimeCoverageRelationStatistics Valid=1391, Invalid=4461, Unknown=0, NotChecked=0, Total=5852 [2021-10-06 21:23:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10710 states. [2021-10-06 21:23:22,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10710 to 6802. [2021-10-06 21:23:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6802 states, 6801 states have (on average 4.737979708866344) internal successors, (32223), 6801 states have internal predecessors, (32223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6802 states to 6802 states and 32223 transitions. [2021-10-06 21:23:22,491 INFO L78 Accepts]: Start accepts. Automaton has 6802 states and 32223 transitions. Word has length 22 [2021-10-06 21:23:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:22,492 INFO L470 AbstractCegarLoop]: Abstraction has 6802 states and 32223 transitions. [2021-10-06 21:23:22,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6802 states and 32223 transitions. [2021-10-06 21:23:22,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:23:22,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:22,518 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:22,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-06 21:23:22,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:22,735 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:23:22,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:22,736 INFO L82 PathProgramCache]: Analyzing trace with hash 814943085, now seen corresponding path program 26 times [2021-10-06 21:23:22,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:22,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476073702] [2021-10-06 21:23:22,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:23:22,738 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:22,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:22,739 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:22,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:23:23,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:23:23,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:23,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:23:23,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:24,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:25,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:25,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476073702] [2021-10-06 21:23:25,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476073702] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:23:25,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:23:25,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:23:25,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570224846] [2021-10-06 21:23:25,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:23:25,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:23:25,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:23:25,194 INFO L87 Difference]: Start difference. First operand 6802 states and 32223 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:31,188 INFO L93 Difference]: Finished difference Result 10706 states and 46421 transitions. [2021-10-06 21:23:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:23:31,189 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:23:31,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:31,227 INFO L225 Difference]: With dead ends: 10706 [2021-10-06 21:23:31,227 INFO L226 Difference]: Without dead ends: 10692 [2021-10-06 21:23:31,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 5681.2ms TimeCoverageRelationStatistics Valid=1079, Invalid=3211, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 21:23:31,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10692 states. [2021-10-06 21:23:31,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10692 to 7136. [2021-10-06 21:23:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7136 states, 7135 states have (on average 4.726278906797477) internal successors, (33722), 7135 states have internal predecessors, (33722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7136 states to 7136 states and 33722 transitions. [2021-10-06 21:23:31,531 INFO L78 Accepts]: Start accepts. Automaton has 7136 states and 33722 transitions. Word has length 22 [2021-10-06 21:23:31,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:31,531 INFO L470 AbstractCegarLoop]: Abstraction has 7136 states and 33722 transitions. [2021-10-06 21:23:31,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand 7136 states and 33722 transitions. [2021-10-06 21:23:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:23:31,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:31,551 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:31,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:31,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:31,752 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:23:31,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash 297490955, now seen corresponding path program 27 times [2021-10-06 21:23:31,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:31,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357388745] [2021-10-06 21:23:31,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:23:31,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:31,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:31,755 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:31,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:23:32,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:23:32,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:32,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:23:32,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:33,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:33,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:33,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357388745] [2021-10-06 21:23:33,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357388745] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:23:33,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:23:33,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:23:33,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061424669] [2021-10-06 21:23:33,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:23:33,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:23:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:23:33,970 INFO L87 Difference]: Start difference. First operand 7136 states and 33722 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:39,423 INFO L93 Difference]: Finished difference Result 12018 states and 52526 transitions. [2021-10-06 21:23:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:23:39,423 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:23:39,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:39,468 INFO L225 Difference]: With dead ends: 12018 [2021-10-06 21:23:39,468 INFO L226 Difference]: Without dead ends: 12004 [2021-10-06 21:23:39,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 5136.3ms TimeCoverageRelationStatistics Valid=891, Invalid=2531, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:23:39,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12004 states. [2021-10-06 21:23:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12004 to 7294. [2021-10-06 21:23:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7294 states, 7293 states have (on average 4.749348690525161) internal successors, (34637), 7293 states have internal predecessors, (34637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7294 states to 7294 states and 34637 transitions. [2021-10-06 21:23:39,805 INFO L78 Accepts]: Start accepts. Automaton has 7294 states and 34637 transitions. Word has length 22 [2021-10-06 21:23:39,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:39,805 INFO L470 AbstractCegarLoop]: Abstraction has 7294 states and 34637 transitions. [2021-10-06 21:23:39,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 7294 states and 34637 transitions. [2021-10-06 21:23:39,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:23:39,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:39,829 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:39,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:40,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:40,044 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:23:40,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:40,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1746221323, now seen corresponding path program 28 times [2021-10-06 21:23:40,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:40,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691559187] [2021-10-06 21:23:40,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:23:40,046 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:40,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:40,047 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:40,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:23:40,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:23:40,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:40,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:23:40,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:41,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:42,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:42,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691559187] [2021-10-06 21:23:42,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691559187] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:23:42,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:23:42,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:23:42,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820168132] [2021-10-06 21:23:42,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:23:42,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:42,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:23:42,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:23:42,167 INFO L87 Difference]: Start difference. First operand 7294 states and 34637 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:47,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:47,026 INFO L93 Difference]: Finished difference Result 11433 states and 49881 transitions. [2021-10-06 21:23:47,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-06 21:23:47,026 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:23:47,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:47,138 INFO L225 Difference]: With dead ends: 11433 [2021-10-06 21:23:47,139 INFO L226 Difference]: Without dead ends: 11426 [2021-10-06 21:23:47,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 4769.3ms TimeCoverageRelationStatistics Valid=1191, Invalid=3779, Unknown=0, NotChecked=0, Total=4970 [2021-10-06 21:23:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11426 states. [2021-10-06 21:23:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11426 to 7420. [2021-10-06 21:23:47,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7420 states, 7419 states have (on average 4.744844318641326) internal successors, (35202), 7419 states have internal predecessors, (35202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7420 states to 7420 states and 35202 transitions. [2021-10-06 21:23:47,437 INFO L78 Accepts]: Start accepts. Automaton has 7420 states and 35202 transitions. Word has length 22 [2021-10-06 21:23:47,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:47,437 INFO L470 AbstractCegarLoop]: Abstraction has 7420 states and 35202 transitions. [2021-10-06 21:23:47,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:47,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7420 states and 35202 transitions. [2021-10-06 21:23:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:23:47,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:47,463 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:47,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:47,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:47,677 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:23:47,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:47,679 INFO L82 PathProgramCache]: Analyzing trace with hash 321710461, now seen corresponding path program 29 times [2021-10-06 21:23:47,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:47,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164553431] [2021-10-06 21:23:47,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:23:47,680 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:47,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:47,681 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:47,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 21:23:48,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:23:48,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:48,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:23:48,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:49,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:49,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:49,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164553431] [2021-10-06 21:23:49,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164553431] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:23:49,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:23:49,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:23:49,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115639218] [2021-10-06 21:23:49,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:23:49,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:23:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:23:49,761 INFO L87 Difference]: Start difference. First operand 7420 states and 35202 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:54,923 INFO L93 Difference]: Finished difference Result 12615 states and 54503 transitions. [2021-10-06 21:23:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 21:23:54,924 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:23:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:54,965 INFO L225 Difference]: With dead ends: 12615 [2021-10-06 21:23:54,966 INFO L226 Difference]: Without dead ends: 12608 [2021-10-06 21:23:54,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 4932.4ms TimeCoverageRelationStatistics Valid=1130, Invalid=3840, Unknown=0, NotChecked=0, Total=4970 [2021-10-06 21:23:54,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12608 states. [2021-10-06 21:23:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12608 to 7680. [2021-10-06 21:23:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7680 states, 7679 states have (on average 4.74150279984373) internal successors, (36410), 7679 states have internal predecessors, (36410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7680 states to 7680 states and 36410 transitions. [2021-10-06 21:23:55,356 INFO L78 Accepts]: Start accepts. Automaton has 7680 states and 36410 transitions. Word has length 22 [2021-10-06 21:23:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:23:55,357 INFO L470 AbstractCegarLoop]: Abstraction has 7680 states and 36410 transitions. [2021-10-06 21:23:55,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 7680 states and 36410 transitions. [2021-10-06 21:23:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:23:55,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:23:55,375 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:23:55,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 21:23:55,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:23:55,576 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:23:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:23:55,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1661231819, now seen corresponding path program 30 times [2021-10-06 21:23:55,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:23:55,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117524705] [2021-10-06 21:23:55,579 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:23:55,579 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:23:55,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:23:55,580 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:23:55,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 21:23:56,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:23:56,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:23:56,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:23:56,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:23:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:57,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:23:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:23:57,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:23:57,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117524705] [2021-10-06 21:23:57,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117524705] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:23:57,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:23:57,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:23:57,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140053458] [2021-10-06 21:23:57,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:23:57,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:23:57,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:23:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:23:57,889 INFO L87 Difference]: Start difference. First operand 7680 states and 36410 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:03,668 INFO L93 Difference]: Finished difference Result 12606 states and 54618 transitions. [2021-10-06 21:24:03,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-06 21:24:03,669 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:24:03,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:03,717 INFO L225 Difference]: With dead ends: 12606 [2021-10-06 21:24:03,718 INFO L226 Difference]: Without dead ends: 12592 [2021-10-06 21:24:03,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 5609.7ms TimeCoverageRelationStatistics Valid=1256, Invalid=3714, Unknown=0, NotChecked=0, Total=4970 [2021-10-06 21:24:03,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12592 states. [2021-10-06 21:24:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12592 to 7830. [2021-10-06 21:24:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7830 states, 7829 states have (on average 4.739685783624984) internal successors, (37107), 7829 states have internal predecessors, (37107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7830 states to 7830 states and 37107 transitions. [2021-10-06 21:24:04,161 INFO L78 Accepts]: Start accepts. Automaton has 7830 states and 37107 transitions. Word has length 22 [2021-10-06 21:24:04,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:04,162 INFO L470 AbstractCegarLoop]: Abstraction has 7830 states and 37107 transitions. [2021-10-06 21:24:04,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:04,162 INFO L276 IsEmpty]: Start isEmpty. Operand 7830 states and 37107 transitions. [2021-10-06 21:24:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:24:04,185 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:04,185 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:04,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:04,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:04,386 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:24:04,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:04,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1887212853, now seen corresponding path program 31 times [2021-10-06 21:24:04,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:04,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8648363] [2021-10-06 21:24:04,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:24:04,388 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:04,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:04,389 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:04,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 21:24:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:24:05,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:24:05,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:05,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:06,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:06,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8648363] [2021-10-06 21:24:06,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8648363] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:06,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:06,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:24:06,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629051824] [2021-10-06 21:24:06,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:24:06,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:06,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:24:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:24:06,651 INFO L87 Difference]: Start difference. First operand 7830 states and 37107 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:11,524 INFO L93 Difference]: Finished difference Result 12608 states and 54875 transitions. [2021-10-06 21:24:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:24:11,524 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:24:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:11,568 INFO L225 Difference]: With dead ends: 12608 [2021-10-06 21:24:11,569 INFO L226 Difference]: Without dead ends: 12594 [2021-10-06 21:24:11,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 4732.4ms TimeCoverageRelationStatistics Valid=956, Invalid=2584, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:24:11,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12594 states. [2021-10-06 21:24:11,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12594 to 7988. [2021-10-06 21:24:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7988 states, 7987 states have (on average 4.738449981219482) internal successors, (37846), 7987 states have internal predecessors, (37846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7988 states to 7988 states and 37846 transitions. [2021-10-06 21:24:11,875 INFO L78 Accepts]: Start accepts. Automaton has 7988 states and 37846 transitions. Word has length 22 [2021-10-06 21:24:11,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:11,876 INFO L470 AbstractCegarLoop]: Abstraction has 7988 states and 37846 transitions. [2021-10-06 21:24:11,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:11,876 INFO L276 IsEmpty]: Start isEmpty. Operand 7988 states and 37846 transitions. [2021-10-06 21:24:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:24:11,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:11,970 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:11,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:12,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:12,171 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:24:12,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:12,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1881961301, now seen corresponding path program 32 times [2021-10-06 21:24:12,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:12,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003659782] [2021-10-06 21:24:12,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:24:12,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:12,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:12,175 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:12,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:24:13,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:24:13,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:13,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:24:13,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:13,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:14,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:14,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003659782] [2021-10-06 21:24:14,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003659782] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:14,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:14,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:24:14,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620820528] [2021-10-06 21:24:14,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:24:14,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:14,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:24:14,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:24:14,617 INFO L87 Difference]: Start difference. First operand 7988 states and 37846 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:22,488 INFO L93 Difference]: Finished difference Result 15142 states and 63549 transitions. [2021-10-06 21:24:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-10-06 21:24:22,489 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:24:22,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:22,539 INFO L225 Difference]: With dead ends: 15142 [2021-10-06 21:24:22,539 INFO L226 Difference]: Without dead ends: 15128 [2021-10-06 21:24:22,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3208 ImplicationChecksByTransitivity, 7395.7ms TimeCoverageRelationStatistics Valid=1849, Invalid=7657, Unknown=0, NotChecked=0, Total=9506 [2021-10-06 21:24:22,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15128 states. [2021-10-06 21:24:22,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15128 to 8372. [2021-10-06 21:24:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8372 states, 8371 states have (on average 4.73384302950663) internal successors, (39627), 8371 states have internal predecessors, (39627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8372 states to 8372 states and 39627 transitions. [2021-10-06 21:24:22,924 INFO L78 Accepts]: Start accepts. Automaton has 8372 states and 39627 transitions. Word has length 22 [2021-10-06 21:24:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:22,924 INFO L470 AbstractCegarLoop]: Abstraction has 8372 states and 39627 transitions. [2021-10-06 21:24:22,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:22,924 INFO L276 IsEmpty]: Start isEmpty. Operand 8372 states and 39627 transitions. [2021-10-06 21:24:22,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:24:22,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:22,944 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:22,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:23,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:23,145 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:24:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:23,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1617395517, now seen corresponding path program 33 times [2021-10-06 21:24:23,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:23,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775228288] [2021-10-06 21:24:23,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:24:23,148 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:23,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:23,149 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:23,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:24:24,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:24:24,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:24,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:24:24,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:24,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:25,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:25,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775228288] [2021-10-06 21:24:25,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775228288] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:25,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:25,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:24:25,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280680750] [2021-10-06 21:24:25,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:24:25,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:25,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:24:25,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:24:25,502 INFO L87 Difference]: Start difference. First operand 8372 states and 39627 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:31,126 INFO L93 Difference]: Finished difference Result 13309 states and 57807 transitions. [2021-10-06 21:24:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-06 21:24:31,127 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:24:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:31,185 INFO L225 Difference]: With dead ends: 13309 [2021-10-06 21:24:31,185 INFO L226 Difference]: Without dead ends: 13302 [2021-10-06 21:24:31,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1454 ImplicationChecksByTransitivity, 5445.1ms TimeCoverageRelationStatistics Valid=1367, Invalid=4183, Unknown=0, NotChecked=0, Total=5550 [2021-10-06 21:24:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13302 states. [2021-10-06 21:24:31,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13302 to 8502. [2021-10-06 21:24:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8502 states, 8501 states have (on average 4.730619927067404) internal successors, (40215), 8501 states have internal predecessors, (40215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8502 states to 8502 states and 40215 transitions. [2021-10-06 21:24:31,615 INFO L78 Accepts]: Start accepts. Automaton has 8502 states and 40215 transitions. Word has length 22 [2021-10-06 21:24:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:31,616 INFO L470 AbstractCegarLoop]: Abstraction has 8502 states and 40215 transitions. [2021-10-06 21:24:31,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 8502 states and 40215 transitions. [2021-10-06 21:24:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:24:31,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:31,636 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:31,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-06 21:24:31,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:31,837 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:24:31,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:31,838 INFO L82 PathProgramCache]: Analyzing trace with hash -709455447, now seen corresponding path program 34 times [2021-10-06 21:24:31,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:31,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440446220] [2021-10-06 21:24:31,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:24:31,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:31,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:31,840 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:31,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:24:32,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:24:32,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:32,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:24:32,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:33,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:34,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:34,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440446220] [2021-10-06 21:24:34,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440446220] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:34,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:34,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:24:34,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763735717] [2021-10-06 21:24:34,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:24:34,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:34,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:24:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:24:34,240 INFO L87 Difference]: Start difference. First operand 8502 states and 40215 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:40,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:40,303 INFO L93 Difference]: Finished difference Result 13297 states and 58164 transitions. [2021-10-06 21:24:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 21:24:40,304 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:24:40,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:40,353 INFO L225 Difference]: With dead ends: 13297 [2021-10-06 21:24:40,353 INFO L226 Difference]: Without dead ends: 13290 [2021-10-06 21:24:40,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 5842.2ms TimeCoverageRelationStatistics Valid=1216, Invalid=3896, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 21:24:40,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13290 states. [2021-10-06 21:24:40,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13290 to 8620. [2021-10-06 21:24:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8620 states, 8619 states have (on average 4.728970878292145) internal successors, (40759), 8619 states have internal predecessors, (40759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8620 states to 8620 states and 40759 transitions. [2021-10-06 21:24:40,733 INFO L78 Accepts]: Start accepts. Automaton has 8620 states and 40759 transitions. Word has length 22 [2021-10-06 21:24:40,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:40,734 INFO L470 AbstractCegarLoop]: Abstraction has 8620 states and 40759 transitions. [2021-10-06 21:24:40,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 8620 states and 40759 transitions. [2021-10-06 21:24:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:24:40,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:40,754 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:40,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:40,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:40,955 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:24:40,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:40,956 INFO L82 PathProgramCache]: Analyzing trace with hash -2133966309, now seen corresponding path program 35 times [2021-10-06 21:24:40,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:40,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759878595] [2021-10-06 21:24:40,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:24:40,957 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:40,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:40,959 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:40,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:24:42,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:24:42,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:42,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:24:42,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:42,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:43,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:43,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759878595] [2021-10-06 21:24:43,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759878595] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:43,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:43,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-06 21:24:43,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826290123] [2021-10-06 21:24:43,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:24:43,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:43,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:24:43,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:24:43,249 INFO L87 Difference]: Start difference. First operand 8620 states and 40759 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:50,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:50,449 INFO L93 Difference]: Finished difference Result 15089 states and 64733 transitions. [2021-10-06 21:24:50,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-06 21:24:50,450 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:24:50,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:50,511 INFO L225 Difference]: With dead ends: 15089 [2021-10-06 21:24:50,512 INFO L226 Difference]: Without dead ends: 15082 [2021-10-06 21:24:50,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 6654.3ms TimeCoverageRelationStatistics Valid=1382, Invalid=4470, Unknown=0, NotChecked=0, Total=5852 [2021-10-06 21:24:50,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15082 states. [2021-10-06 21:24:50,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15082 to 8860. [2021-10-06 21:24:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8860 states, 8859 states have (on average 4.729089061970877) internal successors, (41895), 8859 states have internal predecessors, (41895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8860 states to 8860 states and 41895 transitions. [2021-10-06 21:24:50,910 INFO L78 Accepts]: Start accepts. Automaton has 8860 states and 41895 transitions. Word has length 22 [2021-10-06 21:24:50,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:50,910 INFO L470 AbstractCegarLoop]: Abstraction has 8860 states and 41895 transitions. [2021-10-06 21:24:50,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:50,910 INFO L276 IsEmpty]: Start isEmpty. Operand 8860 states and 41895 transitions. [2021-10-06 21:24:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:24:50,930 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:50,930 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:50,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:51,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:51,131 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:24:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:51,132 INFO L82 PathProgramCache]: Analyzing trace with hash -794444951, now seen corresponding path program 36 times [2021-10-06 21:24:51,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:51,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213305065] [2021-10-06 21:24:51,134 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:24:51,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:51,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:51,135 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:51,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:24:52,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:24:52,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:52,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:24:52,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:53,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:53,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:53,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213305065] [2021-10-06 21:24:53,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213305065] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:53,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:53,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:24:53,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281633436] [2021-10-06 21:24:53,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:24:53,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:53,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:24:53,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:24:53,840 INFO L87 Difference]: Start difference. First operand 8860 states and 41895 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:00,931 INFO L93 Difference]: Finished difference Result 14470 states and 62750 transitions. [2021-10-06 21:25:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-06 21:25:00,931 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:25:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:00,996 INFO L225 Difference]: With dead ends: 14470 [2021-10-06 21:25:00,997 INFO L226 Difference]: Without dead ends: 14456 [2021-10-06 21:25:00,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 6789.4ms TimeCoverageRelationStatistics Valid=1319, Invalid=4083, Unknown=0, NotChecked=0, Total=5402 [2021-10-06 21:25:01,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14456 states. [2021-10-06 21:25:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14456 to 8962. [2021-10-06 21:25:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8962 states, 8961 states have (on average 4.732730722017632) internal successors, (42410), 8961 states have internal predecessors, (42410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8962 states to 8962 states and 42410 transitions. [2021-10-06 21:25:01,468 INFO L78 Accepts]: Start accepts. Automaton has 8962 states and 42410 transitions. Word has length 22 [2021-10-06 21:25:01,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:01,468 INFO L470 AbstractCegarLoop]: Abstraction has 8962 states and 42410 transitions. [2021-10-06 21:25:01,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand 8962 states and 42410 transitions. [2021-10-06 21:25:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:25:01,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:01,499 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:01,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:01,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:01,713 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:25:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:01,714 INFO L82 PathProgramCache]: Analyzing trace with hash 812303571, now seen corresponding path program 37 times [2021-10-06 21:25:01,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:01,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650349795] [2021-10-06 21:25:01,715 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:25:01,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:01,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:01,717 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:01,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:25:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:25:02,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:25:02,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:03,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:04,162 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:04,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650349795] [2021-10-06 21:25:04,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650349795] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:25:04,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:25:04,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:25:04,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318926656] [2021-10-06 21:25:04,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:25:04,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:04,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:25:04,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:25:04,165 INFO L87 Difference]: Start difference. First operand 8962 states and 42410 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:08,842 INFO L93 Difference]: Finished difference Result 13792 states and 60479 transitions. [2021-10-06 21:25:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:25:08,843 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:25:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:08,907 INFO L225 Difference]: With dead ends: 13792 [2021-10-06 21:25:08,907 INFO L226 Difference]: Without dead ends: 13778 [2021-10-06 21:25:08,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 4454.3ms TimeCoverageRelationStatistics Valid=909, Invalid=2513, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:25:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13778 states. [2021-10-06 21:25:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13778 to 9280. [2021-10-06 21:25:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9280 states, 9279 states have (on average 4.723353809677767) internal successors, (43828), 9279 states have internal predecessors, (43828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9280 states to 9280 states and 43828 transitions. [2021-10-06 21:25:09,382 INFO L78 Accepts]: Start accepts. Automaton has 9280 states and 43828 transitions. Word has length 22 [2021-10-06 21:25:09,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:09,382 INFO L470 AbstractCegarLoop]: Abstraction has 9280 states and 43828 transitions. [2021-10-06 21:25:09,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand 9280 states and 43828 transitions. [2021-10-06 21:25:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:25:09,408 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:09,408 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:09,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:09,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:09,609 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:25:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:09,610 INFO L82 PathProgramCache]: Analyzing trace with hash 277073769, now seen corresponding path program 38 times [2021-10-06 21:25:09,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:09,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678949894] [2021-10-06 21:25:09,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:25:09,611 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:09,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:09,612 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:09,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:25:11,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:25:11,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:11,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:25:11,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:11,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:12,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:12,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678949894] [2021-10-06 21:25:12,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678949894] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:25:12,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:25:12,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:25:12,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705690243] [2021-10-06 21:25:12,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:25:12,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:25:12,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:25:12,360 INFO L87 Difference]: Start difference. First operand 9280 states and 43828 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:17,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:17,244 INFO L93 Difference]: Finished difference Result 14090 states and 61923 transitions. [2021-10-06 21:25:17,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:25:17,245 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:25:17,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:17,293 INFO L225 Difference]: With dead ends: 14090 [2021-10-06 21:25:17,293 INFO L226 Difference]: Without dead ends: 14076 [2021-10-06 21:25:17,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 4578.8ms TimeCoverageRelationStatistics Valid=845, Invalid=2347, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:25:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2021-10-06 21:25:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 9392. [2021-10-06 21:25:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9392 states, 9391 states have (on average 4.73016718134384) internal successors, (44421), 9391 states have internal predecessors, (44421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:17,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9392 states to 9392 states and 44421 transitions. [2021-10-06 21:25:17,649 INFO L78 Accepts]: Start accepts. Automaton has 9392 states and 44421 transitions. Word has length 22 [2021-10-06 21:25:17,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:17,649 INFO L470 AbstractCegarLoop]: Abstraction has 9392 states and 44421 transitions. [2021-10-06 21:25:17,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:17,649 INFO L276 IsEmpty]: Start isEmpty. Operand 9392 states and 44421 transitions. [2021-10-06 21:25:17,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:25:17,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:17,671 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:17,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:17,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:17,872 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:25:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:17,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2125096515, now seen corresponding path program 39 times [2021-10-06 21:25:17,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:17,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374640644] [2021-10-06 21:25:17,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:25:17,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:17,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:17,875 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:17,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-06 21:25:19,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:25:19,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:19,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:25:19,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:19,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:20,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:20,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374640644] [2021-10-06 21:25:20,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374640644] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:25:20,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:25:20,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:25:20,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346181177] [2021-10-06 21:25:20,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:25:20,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:20,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:25:20,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:25:20,755 INFO L87 Difference]: Start difference. First operand 9392 states and 44421 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:26,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:26,260 INFO L93 Difference]: Finished difference Result 15063 states and 66373 transitions. [2021-10-06 21:25:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:25:26,261 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:25:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:26,321 INFO L225 Difference]: With dead ends: 15063 [2021-10-06 21:25:26,321 INFO L226 Difference]: Without dead ends: 15056 [2021-10-06 21:25:26,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 5159.1ms TimeCoverageRelationStatistics Valid=898, Invalid=2762, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:25:26,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15056 states. [2021-10-06 21:25:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15056 to 9492. [2021-10-06 21:25:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9492 states, 9491 states have (on average 4.737014013275735) internal successors, (44959), 9491 states have internal predecessors, (44959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9492 states to 9492 states and 44959 transitions. [2021-10-06 21:25:26,703 INFO L78 Accepts]: Start accepts. Automaton has 9492 states and 44959 transitions. Word has length 22 [2021-10-06 21:25:26,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:26,703 INFO L470 AbstractCegarLoop]: Abstraction has 9492 states and 44959 transitions. [2021-10-06 21:25:26,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:26,704 INFO L276 IsEmpty]: Start isEmpty. Operand 9492 states and 44959 transitions. [2021-10-06 21:25:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:25:26,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:26,727 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:26,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:26,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:26,928 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:25:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:26,929 INFO L82 PathProgramCache]: Analyzing trace with hash -785575157, now seen corresponding path program 40 times [2021-10-06 21:25:26,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:26,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689763548] [2021-10-06 21:25:26,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:25:26,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:26,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:26,932 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:26,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-06 21:25:28,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:25:28,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:28,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:25:28,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:28,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:29,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:29,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689763548] [2021-10-06 21:25:29,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689763548] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:25:29,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:25:29,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:25:29,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587417638] [2021-10-06 21:25:29,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:25:29,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:29,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:25:29,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:25:29,616 INFO L87 Difference]: Start difference. First operand 9492 states and 44959 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:36,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:36,196 INFO L93 Difference]: Finished difference Result 15208 states and 66676 transitions. [2021-10-06 21:25:36,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-06 21:25:36,197 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:25:36,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:36,251 INFO L225 Difference]: With dead ends: 15208 [2021-10-06 21:25:36,251 INFO L226 Difference]: Without dead ends: 15194 [2021-10-06 21:25:36,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 6111.4ms TimeCoverageRelationStatistics Valid=1194, Invalid=3776, Unknown=0, NotChecked=0, Total=4970 [2021-10-06 21:25:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15194 states. [2021-10-06 21:25:36,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15194 to 9544. [2021-10-06 21:25:36,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9544 states, 9543 states have (on average 4.741381117049146) internal successors, (45247), 9543 states have internal predecessors, (45247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9544 states to 9544 states and 45247 transitions. [2021-10-06 21:25:36,731 INFO L78 Accepts]: Start accepts. Automaton has 9544 states and 45247 transitions. Word has length 22 [2021-10-06 21:25:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:36,731 INFO L470 AbstractCegarLoop]: Abstraction has 9544 states and 45247 transitions. [2021-10-06 21:25:36,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 9544 states and 45247 transitions. [2021-10-06 21:25:36,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:25:36,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:36,755 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:36,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-10-06 21:25:36,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:36,963 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:25:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:36,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1443196995, now seen corresponding path program 41 times [2021-10-06 21:25:36,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:36,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558589402] [2021-10-06 21:25:36,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:25:36,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:36,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:36,967 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:36,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-06 21:25:38,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:25:38,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:38,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:25:38,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:38,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:39,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:39,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:39,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558589402] [2021-10-06 21:25:39,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558589402] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:25:39,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:25:39,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-06 21:25:39,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749428571] [2021-10-06 21:25:39,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:25:39,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:39,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:25:39,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:25:39,446 INFO L87 Difference]: Start difference. First operand 9544 states and 45247 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:45,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:45,439 INFO L93 Difference]: Finished difference Result 15407 states and 67840 transitions. [2021-10-06 21:25:45,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 21:25:45,440 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:25:45,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:45,495 INFO L225 Difference]: With dead ends: 15407 [2021-10-06 21:25:45,496 INFO L226 Difference]: Without dead ends: 15400 [2021-10-06 21:25:45,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 5363.9ms TimeCoverageRelationStatistics Valid=1006, Invalid=3154, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:25:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15400 states. [2021-10-06 21:25:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15400 to 9938. [2021-10-06 21:25:45,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9938 states, 9937 states have (on average 4.767535473482942) internal successors, (47375), 9937 states have internal predecessors, (47375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9938 states to 9938 states and 47375 transitions. [2021-10-06 21:25:46,011 INFO L78 Accepts]: Start accepts. Automaton has 9938 states and 47375 transitions. Word has length 22 [2021-10-06 21:25:46,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:46,011 INFO L470 AbstractCegarLoop]: Abstraction has 9938 states and 47375 transitions. [2021-10-06 21:25:46,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand 9938 states and 47375 transitions. [2021-10-06 21:25:46,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:25:46,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:46,038 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:46,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:46,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:46,238 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:25:46,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:46,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1241387281, now seen corresponding path program 42 times [2021-10-06 21:25:46,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:46,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138840998] [2021-10-06 21:25:46,241 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:25:46,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:46,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:46,242 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:46,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-06 21:25:47,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:25:47,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:47,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:25:47,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:48,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:49,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:49,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138840998] [2021-10-06 21:25:49,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138840998] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:25:49,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:25:49,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:25:49,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435749008] [2021-10-06 21:25:49,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:25:49,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:49,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:25:49,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:25:49,047 INFO L87 Difference]: Start difference. First operand 9938 states and 47375 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:53,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:53,828 INFO L93 Difference]: Finished difference Result 15296 states and 67975 transitions. [2021-10-06 21:25:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:25:53,828 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:25:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:53,887 INFO L225 Difference]: With dead ends: 15296 [2021-10-06 21:25:53,887 INFO L226 Difference]: Without dead ends: 15282 [2021-10-06 21:25:53,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 4322.8ms TimeCoverageRelationStatistics Valid=655, Invalid=1697, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:25:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15282 states. [2021-10-06 21:25:54,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15282 to 10224. [2021-10-06 21:25:54,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10224 states, 10223 states have (on average 4.766604714858652) internal successors, (48729), 10223 states have internal predecessors, (48729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10224 states to 10224 states and 48729 transitions. [2021-10-06 21:25:54,304 INFO L78 Accepts]: Start accepts. Automaton has 10224 states and 48729 transitions. Word has length 22 [2021-10-06 21:25:54,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:54,304 INFO L470 AbstractCegarLoop]: Abstraction has 10224 states and 48729 transitions. [2021-10-06 21:25:54,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10224 states and 48729 transitions. [2021-10-06 21:25:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:25:54,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:54,328 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:54,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:54,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:54,537 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:25:54,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:54,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1200931031, now seen corresponding path program 43 times [2021-10-06 21:25:54,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:54,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817885384] [2021-10-06 21:25:54,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:25:54,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:54,540 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:54,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-06 21:25:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:25:56,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:25:56,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:56,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:57,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:57,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817885384] [2021-10-06 21:25:57,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817885384] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:25:57,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:25:57,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:25:57,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937970640] [2021-10-06 21:25:57,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:25:57,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:57,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:25:57,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:25:57,576 INFO L87 Difference]: Start difference. First operand 10224 states and 48729 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:03,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:03,905 INFO L93 Difference]: Finished difference Result 16206 states and 71820 transitions. [2021-10-06 21:26:03,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 21:26:03,905 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:26:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:03,962 INFO L225 Difference]: With dead ends: 16206 [2021-10-06 21:26:03,962 INFO L226 Difference]: Without dead ends: 16192 [2021-10-06 21:26:03,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 5908.3ms TimeCoverageRelationStatistics Valid=1011, Invalid=2895, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 21:26:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16192 states. [2021-10-06 21:26:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16192 to 10278. [2021-10-06 21:26:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10278 states, 10277 states have (on average 4.771625960883527) internal successors, (49038), 10277 states have internal predecessors, (49038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:04,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10278 states to 10278 states and 49038 transitions. [2021-10-06 21:26:04,424 INFO L78 Accepts]: Start accepts. Automaton has 10278 states and 49038 transitions. Word has length 22 [2021-10-06 21:26:04,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:04,425 INFO L470 AbstractCegarLoop]: Abstraction has 10278 states and 49038 transitions. [2021-10-06 21:26:04,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:04,425 INFO L276 IsEmpty]: Start isEmpty. Operand 10278 states and 49038 transitions. [2021-10-06 21:26:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:26:04,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:04,454 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:04,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:04,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:04,655 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:26:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:04,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1348448251, now seen corresponding path program 44 times [2021-10-06 21:26:04,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:04,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135017435] [2021-10-06 21:26:04,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:04,657 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:04,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:04,658 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:04,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-06 21:26:06,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:06,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:06,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:26:06,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:06,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:07,550 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:07,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135017435] [2021-10-06 21:26:07,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135017435] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:07,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:07,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:26:07,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447460988] [2021-10-06 21:26:07,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:26:07,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:07,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:26:07,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:26:07,553 INFO L87 Difference]: Start difference. First operand 10278 states and 49038 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:13,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:13,403 INFO L93 Difference]: Finished difference Result 16149 states and 71542 transitions. [2021-10-06 21:26:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-06 21:26:13,404 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:26:13,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:13,473 INFO L225 Difference]: With dead ends: 16149 [2021-10-06 21:26:13,473 INFO L226 Difference]: Without dead ends: 16142 [2021-10-06 21:26:13,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 5576.0ms TimeCoverageRelationStatistics Valid=1097, Invalid=3325, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:26:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16142 states. [2021-10-06 21:26:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16142 to 10480. [2021-10-06 21:26:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10480 states, 10479 states have (on average 4.768489359671724) internal successors, (49969), 10479 states have internal predecessors, (49969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:13,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10480 states to 10480 states and 49969 transitions. [2021-10-06 21:26:13,917 INFO L78 Accepts]: Start accepts. Automaton has 10480 states and 49969 transitions. Word has length 22 [2021-10-06 21:26:13,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:13,918 INFO L470 AbstractCegarLoop]: Abstraction has 10480 states and 49969 transitions. [2021-10-06 21:26:13,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 10480 states and 49969 transitions. [2021-10-06 21:26:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:26:13,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:13,946 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:13,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:14,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:14,147 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:26:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:14,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1606997687, now seen corresponding path program 45 times [2021-10-06 21:26:14,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:14,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728003101] [2021-10-06 21:26:14,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:14,150 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:14,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:14,151 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:14,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-06 21:26:15,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:26:15,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:15,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:26:15,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:16,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:17,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:17,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728003101] [2021-10-06 21:26:17,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728003101] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:17,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:17,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:26:17,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868891439] [2021-10-06 21:26:17,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:26:17,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:26:17,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:26:17,172 INFO L87 Difference]: Start difference. First operand 10480 states and 49969 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:24,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:24,366 INFO L93 Difference]: Finished difference Result 16744 states and 73586 transitions. [2021-10-06 21:26:24,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-06 21:26:24,367 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:26:24,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:24,429 INFO L225 Difference]: With dead ends: 16744 [2021-10-06 21:26:24,429 INFO L226 Difference]: Without dead ends: 16730 [2021-10-06 21:26:24,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 6786.9ms TimeCoverageRelationStatistics Valid=1430, Invalid=4422, Unknown=0, NotChecked=0, Total=5852 [2021-10-06 21:26:24,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16730 states. [2021-10-06 21:26:24,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16730 to 10608. [2021-10-06 21:26:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 4.7725087206561705) internal successors, (50622), 10607 states have internal predecessors, (50622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 50622 transitions. [2021-10-06 21:26:25,039 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 50622 transitions. Word has length 22 [2021-10-06 21:26:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:25,039 INFO L470 AbstractCegarLoop]: Abstraction has 10608 states and 50622 transitions. [2021-10-06 21:26:25,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 50622 transitions. [2021-10-06 21:26:25,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:26:25,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:25,072 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:25,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:25,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:25,287 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:26:25,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:25,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1536369705, now seen corresponding path program 46 times [2021-10-06 21:26:25,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:25,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007399761] [2021-10-06 21:26:25,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:25,289 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:25,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:25,291 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:25,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-06 21:26:26,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:26,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:26,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:26:26,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:27,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:28,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:28,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007399761] [2021-10-06 21:26:28,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007399761] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:28,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:28,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:26:28,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342961099] [2021-10-06 21:26:28,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:26:28,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:28,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:26:28,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:26:28,147 INFO L87 Difference]: Start difference. First operand 10608 states and 50622 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:34,942 INFO L93 Difference]: Finished difference Result 16598 states and 73152 transitions. [2021-10-06 21:26:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-06 21:26:34,943 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:26:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:35,002 INFO L225 Difference]: With dead ends: 16598 [2021-10-06 21:26:35,002 INFO L226 Difference]: Without dead ends: 16584 [2021-10-06 21:26:35,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 6514.9ms TimeCoverageRelationStatistics Valid=1311, Invalid=4091, Unknown=0, NotChecked=0, Total=5402 [2021-10-06 21:26:35,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16584 states. [2021-10-06 21:26:35,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16584 to 10782. [2021-10-06 21:26:35,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10782 states, 10781 states have (on average 4.772284574714776) internal successors, (51450), 10781 states have internal predecessors, (51450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10782 states to 10782 states and 51450 transitions. [2021-10-06 21:26:35,493 INFO L78 Accepts]: Start accepts. Automaton has 10782 states and 51450 transitions. Word has length 22 [2021-10-06 21:26:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:35,494 INFO L470 AbstractCegarLoop]: Abstraction has 10782 states and 51450 transitions. [2021-10-06 21:26:35,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:35,494 INFO L276 IsEmpty]: Start isEmpty. Operand 10782 states and 51450 transitions. [2021-10-06 21:26:35,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:26:35,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:35,519 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:35,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:35,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:35,720 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:26:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:35,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1224619107, now seen corresponding path program 47 times [2021-10-06 21:26:35,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:35,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759024129] [2021-10-06 21:26:35,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:35,722 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:35,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:35,723 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:35,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-06 21:26:37,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:37,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:37,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:26:37,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:37,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:38,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:38,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759024129] [2021-10-06 21:26:38,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759024129] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:38,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:38,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:26:38,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814344035] [2021-10-06 21:26:38,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:26:38,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:38,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:26:38,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:26:38,400 INFO L87 Difference]: Start difference. First operand 10782 states and 51450 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:43,794 INFO L93 Difference]: Finished difference Result 16897 states and 75158 transitions. [2021-10-06 21:26:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 21:26:43,794 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:26:43,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:43,858 INFO L225 Difference]: With dead ends: 16897 [2021-10-06 21:26:43,858 INFO L226 Difference]: Without dead ends: 16890 [2021-10-06 21:26:43,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 4934.4ms TimeCoverageRelationStatistics Valid=897, Invalid=2763, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:26:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16890 states. [2021-10-06 21:26:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16890 to 10974. [2021-10-06 21:26:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10974 states, 10973 states have (on average 4.781645858015128) internal successors, (52469), 10973 states have internal predecessors, (52469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10974 states to 10974 states and 52469 transitions. [2021-10-06 21:26:44,313 INFO L78 Accepts]: Start accepts. Automaton has 10974 states and 52469 transitions. Word has length 22 [2021-10-06 21:26:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:44,313 INFO L470 AbstractCegarLoop]: Abstraction has 10974 states and 52469 transitions. [2021-10-06 21:26:44,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:44,314 INFO L276 IsEmpty]: Start isEmpty. Operand 10974 states and 52469 transitions. [2021-10-06 21:26:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:26:44,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:44,341 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:44,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:44,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:44,542 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:26:44,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:44,542 INFO L82 PathProgramCache]: Analyzing trace with hash 114902251, now seen corresponding path program 48 times [2021-10-06 21:26:44,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:44,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993717701] [2021-10-06 21:26:44,544 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:26:44,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:44,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:44,546 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:44,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-06 21:26:46,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:26:46,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:46,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:26:46,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:46,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:47,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:47,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993717701] [2021-10-06 21:26:47,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993717701] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:47,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:47,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:26:47,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515840800] [2021-10-06 21:26:47,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:26:47,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:26:47,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:26:47,545 INFO L87 Difference]: Start difference. First operand 10974 states and 52469 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:53,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:53,284 INFO L93 Difference]: Finished difference Result 16856 states and 74920 transitions. [2021-10-06 21:26:53,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:26:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:26:53,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:53,347 INFO L225 Difference]: With dead ends: 16856 [2021-10-06 21:26:53,347 INFO L226 Difference]: Without dead ends: 16842 [2021-10-06 21:26:53,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 5401.5ms TimeCoverageRelationStatistics Valid=1064, Invalid=3226, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 21:26:53,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16842 states. [2021-10-06 21:26:53,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16842 to 11036. [2021-10-06 21:26:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11036 states, 11035 states have (on average 4.78586316266425) internal successors, (52812), 11035 states have internal predecessors, (52812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11036 states to 11036 states and 52812 transitions. [2021-10-06 21:26:53,991 INFO L78 Accepts]: Start accepts. Automaton has 11036 states and 52812 transitions. Word has length 22 [2021-10-06 21:26:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:53,991 INFO L470 AbstractCegarLoop]: Abstraction has 11036 states and 52812 transitions. [2021-10-06 21:26:53,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:53,991 INFO L276 IsEmpty]: Start isEmpty. Operand 11036 states and 52812 transitions. [2021-10-06 21:26:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:26:54,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:54,032 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:54,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:54,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:54,233 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:26:54,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:54,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1442557275, now seen corresponding path program 49 times [2021-10-06 21:26:54,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:54,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892214982] [2021-10-06 21:26:54,236 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:26:54,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:54,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:54,405 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:54,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-06 21:26:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:55,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:26:55,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:56,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:57,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:57,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892214982] [2021-10-06 21:26:57,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892214982] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:57,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:57,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:26:57,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821963931] [2021-10-06 21:26:57,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:26:57,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:57,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:26:57,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:26:57,404 INFO L87 Difference]: Start difference. First operand 11036 states and 52812 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:01,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:01,302 INFO L93 Difference]: Finished difference Result 16358 states and 73193 transitions. [2021-10-06 21:27:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:27:01,303 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:27:01,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:01,361 INFO L225 Difference]: With dead ends: 16358 [2021-10-06 21:27:01,361 INFO L226 Difference]: Without dead ends: 16344 [2021-10-06 21:27:01,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 3657.8ms TimeCoverageRelationStatistics Valid=705, Invalid=1845, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:27:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16344 states. [2021-10-06 21:27:01,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16344 to 11204. [2021-10-06 21:27:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11204 states, 11203 states have (on average 4.787110595376238) internal successors, (53630), 11203 states have internal predecessors, (53630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:01,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11204 states to 11204 states and 53630 transitions. [2021-10-06 21:27:01,909 INFO L78 Accepts]: Start accepts. Automaton has 11204 states and 53630 transitions. Word has length 22 [2021-10-06 21:27:01,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:01,910 INFO L470 AbstractCegarLoop]: Abstraction has 11204 states and 53630 transitions. [2021-10-06 21:27:01,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 11204 states and 53630 transitions. [2021-10-06 21:27:01,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:27:01,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:01,939 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:01,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:02,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:02,140 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:27:02,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:02,141 INFO L82 PathProgramCache]: Analyzing trace with hash -808941219, now seen corresponding path program 50 times [2021-10-06 21:27:02,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:02,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596232245] [2021-10-06 21:27:02,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:02,142 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:02,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:02,144 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:02,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-06 21:27:03,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:03,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:03,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:27:03,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:04,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:05,319 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:05,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596232245] [2021-10-06 21:27:05,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596232245] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:05,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:05,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:27:05,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777922037] [2021-10-06 21:27:05,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:27:05,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:27:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:27:05,380 INFO L87 Difference]: Start difference. First operand 11204 states and 53630 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:08,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:08,775 INFO L93 Difference]: Finished difference Result 16891 states and 75611 transitions. [2021-10-06 21:27:08,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:27:08,776 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:27:08,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:08,838 INFO L225 Difference]: With dead ends: 16891 [2021-10-06 21:27:08,838 INFO L226 Difference]: Without dead ends: 16884 [2021-10-06 21:27:08,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 3165.9ms TimeCoverageRelationStatistics Valid=584, Invalid=1578, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:27:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16884 states. [2021-10-06 21:27:09,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16884 to 11472. [2021-10-06 21:27:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11472 states, 11471 states have (on average 4.791125446778834) internal successors, (54959), 11471 states have internal predecessors, (54959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 54959 transitions. [2021-10-06 21:27:09,315 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 54959 transitions. Word has length 22 [2021-10-06 21:27:09,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:09,316 INFO L470 AbstractCegarLoop]: Abstraction has 11472 states and 54959 transitions. [2021-10-06 21:27:09,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:09,316 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 54959 transitions. [2021-10-06 21:27:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:27:09,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:09,343 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:09,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:09,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:09,544 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:27:09,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:09,545 INFO L82 PathProgramCache]: Analyzing trace with hash -300453623, now seen corresponding path program 51 times [2021-10-06 21:27:09,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:09,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172437166] [2021-10-06 21:27:09,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:27:09,547 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:09,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:09,548 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:09,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-06 21:27:11,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:27:11,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:11,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:11,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:12,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:12,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:12,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172437166] [2021-10-06 21:27:12,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172437166] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:12,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:12,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-06 21:27:12,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195962255] [2021-10-06 21:27:12,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:27:12,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:27:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:27:12,740 INFO L87 Difference]: Start difference. First operand 11472 states and 54959 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:18,014 INFO L93 Difference]: Finished difference Result 18297 states and 80922 transitions. [2021-10-06 21:27:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 21:27:18,014 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:27:18,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:18,081 INFO L225 Difference]: With dead ends: 18297 [2021-10-06 21:27:18,081 INFO L226 Difference]: Without dead ends: 18276 [2021-10-06 21:27:18,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 4763.6ms TimeCoverageRelationStatistics Valid=943, Invalid=2963, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 21:27:18,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18276 states. [2021-10-06 21:27:18,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18276 to 11736. [2021-10-06 21:27:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11736 states, 11735 states have (on average 4.8025564550489985) internal successors, (56358), 11735 states have internal predecessors, (56358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11736 states to 11736 states and 56358 transitions. [2021-10-06 21:27:18,588 INFO L78 Accepts]: Start accepts. Automaton has 11736 states and 56358 transitions. Word has length 22 [2021-10-06 21:27:18,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:18,588 INFO L470 AbstractCegarLoop]: Abstraction has 11736 states and 56358 transitions. [2021-10-06 21:27:18,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:18,588 INFO L276 IsEmpty]: Start isEmpty. Operand 11736 states and 56358 transitions. [2021-10-06 21:27:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:27:18,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:18,615 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:18,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:18,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:18,816 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:27:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:18,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1107016457, now seen corresponding path program 52 times [2021-10-06 21:27:18,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:18,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402968060] [2021-10-06 21:27:18,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:27:18,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:18,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:18,821 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:18,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-06 21:27:20,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:27:20,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:20,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:27:20,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:21,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:22,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:22,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402968060] [2021-10-06 21:27:22,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402968060] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:22,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:22,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:27:22,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399667043] [2021-10-06 21:27:22,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:27:22,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:22,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:27:22,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:27:22,097 INFO L87 Difference]: Start difference. First operand 11736 states and 56358 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:27,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:27,820 INFO L93 Difference]: Finished difference Result 17640 states and 79344 transitions. [2021-10-06 21:27:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:27:27,820 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:27:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:27,884 INFO L225 Difference]: With dead ends: 17640 [2021-10-06 21:27:27,884 INFO L226 Difference]: Without dead ends: 17626 [2021-10-06 21:27:27,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 5370.7ms TimeCoverageRelationStatistics Valid=954, Invalid=2706, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:27:27,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17626 states. [2021-10-06 21:27:28,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17626 to 11874. [2021-10-06 21:27:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11874 states, 11873 states have (on average 4.808894129537606) internal successors, (57096), 11873 states have internal predecessors, (57096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11874 states to 11874 states and 57096 transitions. [2021-10-06 21:27:28,423 INFO L78 Accepts]: Start accepts. Automaton has 11874 states and 57096 transitions. Word has length 22 [2021-10-06 21:27:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:28,423 INFO L470 AbstractCegarLoop]: Abstraction has 11874 states and 57096 transitions. [2021-10-06 21:27:28,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 11874 states and 57096 transitions. [2021-10-06 21:27:28,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:27:28,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:28,453 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:28,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:28,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:28,654 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:27:28,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:28,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1527499911, now seen corresponding path program 53 times [2021-10-06 21:27:28,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:28,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151330689] [2021-10-06 21:27:28,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:27:28,657 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:28,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:28,658 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:28,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-06 21:27:30,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:27:30,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:30,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:30,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:31,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:31,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:31,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:31,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151330689] [2021-10-06 21:27:31,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151330689] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:31,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:31,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-06 21:27:31,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481073106] [2021-10-06 21:27:31,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:27:31,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:31,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:27:31,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:27:31,644 INFO L87 Difference]: Start difference. First operand 11874 states and 57096 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:35,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:35,743 INFO L93 Difference]: Finished difference Result 17867 states and 80006 transitions. [2021-10-06 21:27:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:27:35,744 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:27:35,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:35,807 INFO L225 Difference]: With dead ends: 17867 [2021-10-06 21:27:35,807 INFO L226 Difference]: Without dead ends: 17860 [2021-10-06 21:27:35,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 3920.2ms TimeCoverageRelationStatistics Valid=807, Invalid=2499, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:27:35,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17860 states. [2021-10-06 21:27:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17860 to 11980. [2021-10-06 21:27:36,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11980 states, 11979 states have (on average 4.811837382085316) internal successors, (57641), 11979 states have internal predecessors, (57641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:36,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11980 states to 11980 states and 57641 transitions. [2021-10-06 21:27:36,404 INFO L78 Accepts]: Start accepts. Automaton has 11980 states and 57641 transitions. Word has length 22 [2021-10-06 21:27:36,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:36,404 INFO L470 AbstractCegarLoop]: Abstraction has 11980 states and 57641 transitions. [2021-10-06 21:27:36,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:36,405 INFO L276 IsEmpty]: Start isEmpty. Operand 11980 states and 57641 transitions. [2021-10-06 21:27:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:27:36,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:36,433 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:36,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:36,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:36,639 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:27:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:36,640 INFO L82 PathProgramCache]: Analyzing trace with hash 279089341, now seen corresponding path program 54 times [2021-10-06 21:27:36,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:36,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993457701] [2021-10-06 21:27:36,641 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:27:36,641 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:36,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:36,643 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:36,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-06 21:27:38,365 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:27:38,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:38,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:27:38,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:39,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:39,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:39,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993457701] [2021-10-06 21:27:39,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993457701] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:39,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:39,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:27:39,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951273043] [2021-10-06 21:27:39,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:27:39,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:39,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:27:39,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:27:39,976 INFO L87 Difference]: Start difference. First operand 11980 states and 57641 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:45,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:45,193 INFO L93 Difference]: Finished difference Result 18006 states and 81030 transitions. [2021-10-06 21:27:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:27:45,193 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:27:45,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:45,268 INFO L225 Difference]: With dead ends: 18006 [2021-10-06 21:27:45,268 INFO L226 Difference]: Without dead ends: 17992 [2021-10-06 21:27:45,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 4874.0ms TimeCoverageRelationStatistics Valid=855, Invalid=2225, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:27:45,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17992 states. [2021-10-06 21:27:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17992 to 12144. [2021-10-06 21:27:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12144 states, 12143 states have (on average 4.818331549040599) internal successors, (58509), 12143 states have internal predecessors, (58509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12144 states to 12144 states and 58509 transitions. [2021-10-06 21:27:45,984 INFO L78 Accepts]: Start accepts. Automaton has 12144 states and 58509 transitions. Word has length 22 [2021-10-06 21:27:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:45,985 INFO L470 AbstractCegarLoop]: Abstraction has 12144 states and 58509 transitions. [2021-10-06 21:27:45,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 12144 states and 58509 transitions. [2021-10-06 21:27:46,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:27:46,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:46,021 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:46,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:46,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:46,222 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:27:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:46,224 INFO L82 PathProgramCache]: Analyzing trace with hash -136631661, now seen corresponding path program 55 times [2021-10-06 21:27:46,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:46,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170114748] [2021-10-06 21:27:46,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:27:46,225 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:46,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:46,226 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:46,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-06 21:27:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:27:48,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:27:48,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:48,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:49,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:49,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170114748] [2021-10-06 21:27:49,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170114748] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:49,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:49,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:27:49,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345629510] [2021-10-06 21:27:49,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:27:49,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:27:49,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:27:49,528 INFO L87 Difference]: Start difference. First operand 12144 states and 58509 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:54,373 INFO L93 Difference]: Finished difference Result 18006 states and 80930 transitions. [2021-10-06 21:27:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:27:54,373 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:27:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:54,440 INFO L225 Difference]: With dead ends: 18006 [2021-10-06 21:27:54,440 INFO L226 Difference]: Without dead ends: 17992 [2021-10-06 21:27:54,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 4630.2ms TimeCoverageRelationStatistics Valid=836, Invalid=2244, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:27:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17992 states. [2021-10-06 21:27:54,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17992 to 12302. [2021-10-06 21:27:54,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12302 states, 12301 states have (on average 4.817250630030079) internal successors, (59257), 12301 states have internal predecessors, (59257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12302 states to 12302 states and 59257 transitions. [2021-10-06 21:27:55,028 INFO L78 Accepts]: Start accepts. Automaton has 12302 states and 59257 transitions. Word has length 22 [2021-10-06 21:27:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:55,029 INFO L470 AbstractCegarLoop]: Abstraction has 12302 states and 59257 transitions. [2021-10-06 21:27:55,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 12302 states and 59257 transitions. [2021-10-06 21:27:55,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:27:55,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:55,060 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:55,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:55,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:55,261 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:27:55,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:55,263 INFO L82 PathProgramCache]: Analyzing trace with hash -223550239, now seen corresponding path program 56 times [2021-10-06 21:27:55,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:55,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211802357] [2021-10-06 21:27:55,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:55,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:55,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:55,265 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:55,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-06 21:27:57,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:57,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:57,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:27:57,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:57,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:58,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:58,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211802357] [2021-10-06 21:27:58,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211802357] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:58,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:58,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:27:58,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671383011] [2021-10-06 21:27:58,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:27:58,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:58,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:27:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:27:58,669 INFO L87 Difference]: Start difference. First operand 12302 states and 59257 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:03,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:03,523 INFO L93 Difference]: Finished difference Result 18084 states and 81154 transitions. [2021-10-06 21:28:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:28:03,524 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:28:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:03,592 INFO L225 Difference]: With dead ends: 18084 [2021-10-06 21:28:03,592 INFO L226 Difference]: Without dead ends: 18070 [2021-10-06 21:28:03,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 4723.5ms TimeCoverageRelationStatistics Valid=957, Invalid=2703, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:28:03,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18070 states. [2021-10-06 21:28:04,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18070 to 12386. [2021-10-06 21:28:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12386 states, 12385 states have (on average 4.8179249091643115) internal successors, (59670), 12385 states have internal predecessors, (59670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12386 states to 12386 states and 59670 transitions. [2021-10-06 21:28:04,212 INFO L78 Accepts]: Start accepts. Automaton has 12386 states and 59670 transitions. Word has length 22 [2021-10-06 21:28:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:04,213 INFO L470 AbstractCegarLoop]: Abstraction has 12386 states and 59670 transitions. [2021-10-06 21:28:04,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:04,213 INFO L276 IsEmpty]: Start isEmpty. Operand 12386 states and 59670 transitions. [2021-10-06 21:28:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:28:04,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:04,245 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:04,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:04,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:04,446 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:04,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:04,447 INFO L82 PathProgramCache]: Analyzing trace with hash 31418003, now seen corresponding path program 57 times [2021-10-06 21:28:04,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:04,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795801668] [2021-10-06 21:28:04,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:04,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:04,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:04,450 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:04,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-06 21:28:06,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:28:06,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:06,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:28:06,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:07,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:07,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:07,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795801668] [2021-10-06 21:28:07,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795801668] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:07,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:07,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:28:07,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271439507] [2021-10-06 21:28:07,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:28:07,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:07,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:28:07,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:28:07,820 INFO L87 Difference]: Start difference. First operand 12386 states and 59670 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:12,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:12,279 INFO L93 Difference]: Finished difference Result 18206 states and 81616 transitions. [2021-10-06 21:28:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:28:12,279 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:28:12,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:12,345 INFO L225 Difference]: With dead ends: 18206 [2021-10-06 21:28:12,345 INFO L226 Difference]: Without dead ends: 18192 [2021-10-06 21:28:12,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 4371.6ms TimeCoverageRelationStatistics Valid=973, Invalid=2809, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 21:28:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18192 states. [2021-10-06 21:28:12,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18192 to 12492. [2021-10-06 21:28:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12492 states, 12491 states have (on average 4.815066848130654) internal successors, (60145), 12491 states have internal predecessors, (60145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12492 states to 12492 states and 60145 transitions. [2021-10-06 21:28:12,951 INFO L78 Accepts]: Start accepts. Automaton has 12492 states and 60145 transitions. Word has length 22 [2021-10-06 21:28:12,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:12,952 INFO L470 AbstractCegarLoop]: Abstraction has 12492 states and 60145 transitions. [2021-10-06 21:28:12,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 12492 states and 60145 transitions. [2021-10-06 21:28:12,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:28:12,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:12,983 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:13,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:13,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:13,183 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:13,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:13,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1585268277, now seen corresponding path program 58 times [2021-10-06 21:28:13,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:13,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903278789] [2021-10-06 21:28:13,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:13,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:13,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:13,187 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:13,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-06 21:28:14,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:14,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:14,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:28:14,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:15,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:16,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:16,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903278789] [2021-10-06 21:28:16,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903278789] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:16,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:16,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:28:16,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153818612] [2021-10-06 21:28:16,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:28:16,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:16,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:28:16,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:28:16,500 INFO L87 Difference]: Start difference. First operand 12492 states and 60145 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:22,073 INFO L93 Difference]: Finished difference Result 18730 states and 84259 transitions. [2021-10-06 21:28:22,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:28:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:28:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:22,279 INFO L225 Difference]: With dead ends: 18730 [2021-10-06 21:28:22,279 INFO L226 Difference]: Without dead ends: 18716 [2021-10-06 21:28:22,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 5269.1ms TimeCoverageRelationStatistics Valid=831, Invalid=2249, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:28:22,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18716 states. [2021-10-06 21:28:22,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18716 to 12592. [2021-10-06 21:28:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12592 states, 12591 states have (on average 4.818124056866015) internal successors, (60665), 12591 states have internal predecessors, (60665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12592 states to 12592 states and 60665 transitions. [2021-10-06 21:28:22,757 INFO L78 Accepts]: Start accepts. Automaton has 12592 states and 60665 transitions. Word has length 22 [2021-10-06 21:28:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:22,758 INFO L470 AbstractCegarLoop]: Abstraction has 12592 states and 60665 transitions. [2021-10-06 21:28:22,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 12592 states and 60665 transitions. [2021-10-06 21:28:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:28:22,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:22,789 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:22,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:22,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:22,995 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1590519829, now seen corresponding path program 59 times [2021-10-06 21:28:22,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:22,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392016301] [2021-10-06 21:28:22,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:28:22,998 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:22,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:22,999 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:23,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-06 21:28:24,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:28:24,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:24,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:28:24,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:25,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:26,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:26,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392016301] [2021-10-06 21:28:26,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392016301] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:26,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:26,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-06 21:28:26,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806878927] [2021-10-06 21:28:26,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:28:26,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:26,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:28:26,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:28:26,200 INFO L87 Difference]: Start difference. First operand 12592 states and 60665 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:33,217 INFO L93 Difference]: Finished difference Result 19765 states and 87563 transitions. [2021-10-06 21:28:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-06 21:28:33,218 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:28:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:33,292 INFO L225 Difference]: With dead ends: 19765 [2021-10-06 21:28:33,293 INFO L226 Difference]: Without dead ends: 19744 [2021-10-06 21:28:33,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 6498.3ms TimeCoverageRelationStatistics Valid=1445, Invalid=4717, Unknown=0, NotChecked=0, Total=6162 [2021-10-06 21:28:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19744 states. [2021-10-06 21:28:33,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19744 to 12992. [2021-10-06 21:28:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12992 states, 12991 states have (on average 4.825956431375568) internal successors, (62694), 12991 states have internal predecessors, (62694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12992 states to 12992 states and 62694 transitions. [2021-10-06 21:28:33,849 INFO L78 Accepts]: Start accepts. Automaton has 12992 states and 62694 transitions. Word has length 22 [2021-10-06 21:28:33,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:33,849 INFO L470 AbstractCegarLoop]: Abstraction has 12992 states and 62694 transitions. [2021-10-06 21:28:33,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand 12992 states and 62694 transitions. [2021-10-06 21:28:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:28:33,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:33,881 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:33,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:34,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:34,082 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:34,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:34,082 INFO L82 PathProgramCache]: Analyzing trace with hash -502169499, now seen corresponding path program 60 times [2021-10-06 21:28:34,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:34,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894704969] [2021-10-06 21:28:34,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:34,084 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:34,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:34,085 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:34,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-06 21:28:36,174 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:28:36,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:36,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:28:36,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:36,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:37,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:37,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894704969] [2021-10-06 21:28:37,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894704969] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:37,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:37,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:28:37,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464972389] [2021-10-06 21:28:37,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:28:37,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:28:37,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:28:37,581 INFO L87 Difference]: Start difference. First operand 12992 states and 62694 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:41,894 INFO L93 Difference]: Finished difference Result 18780 states and 84956 transitions. [2021-10-06 21:28:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:28:41,894 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:28:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:42,103 INFO L225 Difference]: With dead ends: 18780 [2021-10-06 21:28:42,103 INFO L226 Difference]: Without dead ends: 18766 [2021-10-06 21:28:42,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 4021.9ms TimeCoverageRelationStatistics Valid=812, Invalid=2268, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:28:42,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18766 states. [2021-10-06 21:28:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18766 to 13104. [2021-10-06 21:28:42,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13104 states, 13103 states have (on average 4.827825688773563) internal successors, (63259), 13103 states have internal predecessors, (63259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13104 states to 13104 states and 63259 transitions. [2021-10-06 21:28:42,647 INFO L78 Accepts]: Start accepts. Automaton has 13104 states and 63259 transitions. Word has length 22 [2021-10-06 21:28:42,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:42,648 INFO L470 AbstractCegarLoop]: Abstraction has 13104 states and 63259 transitions. [2021-10-06 21:28:42,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 13104 states and 63259 transitions. [2021-10-06 21:28:42,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:28:42,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:42,684 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:42,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:42,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:42,891 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:42,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:42,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1175163955, now seen corresponding path program 61 times [2021-10-06 21:28:42,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:42,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955059015] [2021-10-06 21:28:42,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:28:42,894 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:42,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:42,895 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:42,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-06 21:28:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:44,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:28:44,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:45,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:46,360 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:46,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955059015] [2021-10-06 21:28:46,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955059015] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:46,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:46,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:28:46,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661317471] [2021-10-06 21:28:46,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:28:46,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:46,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:28:46,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:28:46,362 INFO L87 Difference]: Start difference. First operand 13104 states and 63259 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:52,371 INFO L93 Difference]: Finished difference Result 19620 states and 88401 transitions. [2021-10-06 21:28:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:28:52,372 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:28:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:52,444 INFO L225 Difference]: With dead ends: 19620 [2021-10-06 21:28:52,445 INFO L226 Difference]: Without dead ends: 19606 [2021-10-06 21:28:52,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 5509.9ms TimeCoverageRelationStatistics Valid=1091, Invalid=3199, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 21:28:52,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19606 states. [2021-10-06 21:28:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19606 to 13158. [2021-10-06 21:28:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13158 states, 13157 states have (on average 4.831952572774949) internal successors, (63574), 13157 states have internal predecessors, (63574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13158 states to 13158 states and 63574 transitions. [2021-10-06 21:28:53,140 INFO L78 Accepts]: Start accepts. Automaton has 13158 states and 63574 transitions. Word has length 22 [2021-10-06 21:28:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:53,140 INFO L470 AbstractCegarLoop]: Abstraction has 13158 states and 63574 transitions. [2021-10-06 21:28:53,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 13158 states and 63574 transitions. [2021-10-06 21:28:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:28:53,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:53,173 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:53,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:53,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:53,374 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:53,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:53,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1712333261, now seen corresponding path program 62 times [2021-10-06 21:28:53,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:53,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097805795] [2021-10-06 21:28:53,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:28:53,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:53,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:53,377 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:53,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-06 21:28:55,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:28:55,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:55,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:28:55,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:56,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:57,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:57,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097805795] [2021-10-06 21:28:57,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097805795] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:57,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:57,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:28:57,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094718189] [2021-10-06 21:28:57,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:28:57,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:57,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:28:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:28:57,394 INFO L87 Difference]: Start difference. First operand 13158 states and 63574 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:03,814 INFO L93 Difference]: Finished difference Result 19627 states and 89388 transitions. [2021-10-06 21:29:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 21:29:03,815 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:29:03,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:03,889 INFO L225 Difference]: With dead ends: 19627 [2021-10-06 21:29:03,890 INFO L226 Difference]: Without dead ends: 19620 [2021-10-06 21:29:03,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 6050.8ms TimeCoverageRelationStatistics Valid=894, Invalid=3012, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 21:29:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19620 states. [2021-10-06 21:29:04,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19620 to 13396. [2021-10-06 21:29:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13396 states, 13395 states have (on average 4.842478536767451) internal successors, (64865), 13395 states have internal predecessors, (64865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13396 states to 13396 states and 64865 transitions. [2021-10-06 21:29:04,553 INFO L78 Accepts]: Start accepts. Automaton has 13396 states and 64865 transitions. Word has length 22 [2021-10-06 21:29:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:04,553 INFO L470 AbstractCegarLoop]: Abstraction has 13396 states and 64865 transitions. [2021-10-06 21:29:04,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:04,553 INFO L276 IsEmpty]: Start isEmpty. Operand 13396 states and 64865 transitions. [2021-10-06 21:29:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:29:04,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:04,587 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:04,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:04,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:04,788 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:29:04,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:04,788 INFO L82 PathProgramCache]: Analyzing trace with hash 40287797, now seen corresponding path program 63 times [2021-10-06 21:29:04,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:04,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615035949] [2021-10-06 21:29:04,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:29:04,790 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:04,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:04,791 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:04,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-06 21:29:07,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:29:07,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:07,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:29:07,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:07,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:08,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:08,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615035949] [2021-10-06 21:29:08,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615035949] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:08,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:08,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:29:08,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789168447] [2021-10-06 21:29:08,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:29:08,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:29:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:29:08,675 INFO L87 Difference]: Start difference. First operand 13396 states and 64865 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:15,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:15,871 INFO L93 Difference]: Finished difference Result 19914 states and 89643 transitions. [2021-10-06 21:29:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-06 21:29:15,872 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:29:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:15,942 INFO L225 Difference]: With dead ends: 19914 [2021-10-06 21:29:15,942 INFO L226 Difference]: Without dead ends: 19900 [2021-10-06 21:29:15,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 6794.4ms TimeCoverageRelationStatistics Valid=1537, Invalid=4783, Unknown=0, NotChecked=0, Total=6320 [2021-10-06 21:29:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19900 states. [2021-10-06 21:29:16,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19900 to 13504. [2021-10-06 21:29:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13504 states, 13503 states have (on average 4.84322002517959) internal successors, (65398), 13503 states have internal predecessors, (65398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13504 states to 13504 states and 65398 transitions. [2021-10-06 21:29:16,573 INFO L78 Accepts]: Start accepts. Automaton has 13504 states and 65398 transitions. Word has length 22 [2021-10-06 21:29:16,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:16,573 INFO L470 AbstractCegarLoop]: Abstraction has 13504 states and 65398 transitions. [2021-10-06 21:29:16,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 13504 states and 65398 transitions. [2021-10-06 21:29:16,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:29:16,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:16,607 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:16,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:16,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:16,808 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:29:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:16,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1289640365, now seen corresponding path program 64 times [2021-10-06 21:29:16,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:16,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753078795] [2021-10-06 21:29:16,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:29:16,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:16,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:16,811 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:16,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-06 21:29:18,790 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:29:18,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:18,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:29:18,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:19,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:20,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:20,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753078795] [2021-10-06 21:29:20,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753078795] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:20,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:20,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:29:20,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654361228] [2021-10-06 21:29:20,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:29:20,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:29:20,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:29:20,487 INFO L87 Difference]: Start difference. First operand 13504 states and 65398 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:27,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:27,112 INFO L93 Difference]: Finished difference Result 20234 states and 91322 transitions. [2021-10-06 21:29:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-06 21:29:27,113 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:29:27,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:27,182 INFO L225 Difference]: With dead ends: 20234 [2021-10-06 21:29:27,183 INFO L226 Difference]: Without dead ends: 20220 [2021-10-06 21:29:27,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 6236.8ms TimeCoverageRelationStatistics Valid=1399, Invalid=4003, Unknown=0, NotChecked=0, Total=5402 [2021-10-06 21:29:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20220 states. [2021-10-06 21:29:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20220 to 13576. [2021-10-06 21:29:27,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13576 states, 13575 states have (on average 4.848913443830571) internal successors, (65824), 13575 states have internal predecessors, (65824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13576 states to 13576 states and 65824 transitions. [2021-10-06 21:29:27,942 INFO L78 Accepts]: Start accepts. Automaton has 13576 states and 65824 transitions. Word has length 22 [2021-10-06 21:29:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:27,942 INFO L470 AbstractCegarLoop]: Abstraction has 13576 states and 65824 transitions. [2021-10-06 21:29:27,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:27,944 INFO L276 IsEmpty]: Start isEmpty. Operand 13576 states and 65824 transitions. [2021-10-06 21:29:27,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:29:27,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:27,981 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:28,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:28,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:28,182 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:29:28,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:28,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1286675573, now seen corresponding path program 65 times [2021-10-06 21:29:28,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:28,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244114051] [2021-10-06 21:29:28,183 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:29:28,184 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:28,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:28,185 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:28,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-06 21:29:30,302 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:29:30,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:30,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:29:30,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:30,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:31,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:31,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244114051] [2021-10-06 21:29:31,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244114051] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:31,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:31,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-06 21:29:31,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013750641] [2021-10-06 21:29:31,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:31,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:31,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:31,620 INFO L87 Difference]: Start difference. First operand 13576 states and 65824 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:36,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:36,644 INFO L93 Difference]: Finished difference Result 19175 states and 86673 transitions. [2021-10-06 21:29:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-06 21:29:36,645 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:29:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:36,710 INFO L225 Difference]: With dead ends: 19175 [2021-10-06 21:29:36,711 INFO L226 Difference]: Without dead ends: 19168 [2021-10-06 21:29:36,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 4569.7ms TimeCoverageRelationStatistics Valid=984, Invalid=3306, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 21:29:36,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19168 states. [2021-10-06 21:29:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19168 to 13824. [2021-10-06 21:29:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13824 states, 13823 states have (on average 4.8579179628155975) internal successors, (67151), 13823 states have internal predecessors, (67151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:37,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13824 states to 13824 states and 67151 transitions. [2021-10-06 21:29:37,546 INFO L78 Accepts]: Start accepts. Automaton has 13824 states and 67151 transitions. Word has length 22 [2021-10-06 21:29:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:37,546 INFO L470 AbstractCegarLoop]: Abstraction has 13824 states and 67151 transitions. [2021-10-06 21:29:37,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:37,547 INFO L276 IsEmpty]: Start isEmpty. Operand 13824 states and 67151 transitions. [2021-10-06 21:29:37,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:29:37,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:37,596 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:37,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:37,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:37,811 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:29:37,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:37,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1831542299, now seen corresponding path program 66 times [2021-10-06 21:29:37,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:37,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141652088] [2021-10-06 21:29:37,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:29:37,814 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:37,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:37,815 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:37,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-06 21:29:40,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:29:40,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:40,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:29:40,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:40,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:41,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:41,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141652088] [2021-10-06 21:29:41,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141652088] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:41,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:41,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:29:41,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808426437] [2021-10-06 21:29:41,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:29:41,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:41,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:29:41,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:29:41,652 INFO L87 Difference]: Start difference. First operand 13824 states and 67151 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:47,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:47,078 INFO L93 Difference]: Finished difference Result 20423 states and 93213 transitions. [2021-10-06 21:29:47,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:29:47,079 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:29:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:47,154 INFO L225 Difference]: With dead ends: 20423 [2021-10-06 21:29:47,155 INFO L226 Difference]: Without dead ends: 20416 [2021-10-06 21:29:47,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 5090.3ms TimeCoverageRelationStatistics Valid=864, Invalid=3042, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 21:29:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20416 states. [2021-10-06 21:29:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20416 to 14084. [2021-10-06 21:29:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14084 states, 14083 states have (on average 4.863239366612228) internal successors, (68489), 14083 states have internal predecessors, (68489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14084 states to 14084 states and 68489 transitions. [2021-10-06 21:29:47,945 INFO L78 Accepts]: Start accepts. Automaton has 14084 states and 68489 transitions. Word has length 22 [2021-10-06 21:29:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:47,945 INFO L470 AbstractCegarLoop]: Abstraction has 14084 states and 68489 transitions. [2021-10-06 21:29:47,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 14084 states and 68489 transitions. [2021-10-06 21:29:47,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:29:47,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:47,990 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:48,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2021-10-06 21:29:48,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:48,191 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:29:48,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:48,192 INFO L82 PathProgramCache]: Analyzing trace with hash -786091543, now seen corresponding path program 67 times [2021-10-06 21:29:48,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:48,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088255332] [2021-10-06 21:29:48,193 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:29:48,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:48,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:48,194 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:48,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-06 21:29:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:50,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:29:50,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:51,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:52,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:52,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088255332] [2021-10-06 21:29:52,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088255332] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:52,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:52,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:29:52,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989789753] [2021-10-06 21:29:52,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:29:52,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:52,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:29:52,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:29:52,265 INFO L87 Difference]: Start difference. First operand 14084 states and 68489 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:59,153 INFO L93 Difference]: Finished difference Result 20778 states and 94325 transitions. [2021-10-06 21:29:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 21:29:59,154 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:29:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:59,233 INFO L225 Difference]: With dead ends: 20778 [2021-10-06 21:29:59,233 INFO L226 Difference]: Without dead ends: 20764 [2021-10-06 21:29:59,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 6564.3ms TimeCoverageRelationStatistics Valid=1235, Invalid=3877, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 21:29:59,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20764 states. [2021-10-06 21:29:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20764 to 14146. [2021-10-06 21:29:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14146 states, 14145 states have (on average 4.866313184870979) internal successors, (68834), 14145 states have internal predecessors, (68834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14146 states to 14146 states and 68834 transitions. [2021-10-06 21:29:59,939 INFO L78 Accepts]: Start accepts. Automaton has 14146 states and 68834 transitions. Word has length 22 [2021-10-06 21:29:59,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:59,939 INFO L470 AbstractCegarLoop]: Abstraction has 14146 states and 68834 transitions. [2021-10-06 21:29:59,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 14146 states and 68834 transitions. [2021-10-06 21:29:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:29:59,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:59,976 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:59,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:00,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:00,185 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:30:00,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:00,185 INFO L82 PathProgramCache]: Analyzing trace with hash 621378537, now seen corresponding path program 68 times [2021-10-06 21:30:00,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:00,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672162891] [2021-10-06 21:30:00,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:30:00,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:00,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:00,188 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:00,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-06 21:30:02,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:30:02,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:02,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:30:02,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:03,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:04,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:04,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672162891] [2021-10-06 21:30:04,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672162891] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:04,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:04,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:30:04,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568436503] [2021-10-06 21:30:04,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:30:04,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:04,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:30:04,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:30:04,415 INFO L87 Difference]: Start difference. First operand 14146 states and 68834 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:10,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:10,052 INFO L93 Difference]: Finished difference Result 20363 states and 93532 transitions. [2021-10-06 21:30:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:30:10,052 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:30:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:10,130 INFO L225 Difference]: With dead ends: 20363 [2021-10-06 21:30:10,130 INFO L226 Difference]: Without dead ends: 20356 [2021-10-06 21:30:10,130 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 5200.2ms TimeCoverageRelationStatistics Valid=826, Invalid=2714, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:30:10,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20356 states. [2021-10-06 21:30:10,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20356 to 14242. [2021-10-06 21:30:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14242 states, 14241 states have (on average 4.873674601502703) internal successors, (69406), 14241 states have internal predecessors, (69406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14242 states to 14242 states and 69406 transitions. [2021-10-06 21:30:10,892 INFO L78 Accepts]: Start accepts. Automaton has 14242 states and 69406 transitions. Word has length 22 [2021-10-06 21:30:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:10,892 INFO L470 AbstractCegarLoop]: Abstraction has 14242 states and 69406 transitions. [2021-10-06 21:30:10,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 14242 states and 69406 transitions. [2021-10-06 21:30:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:30:10,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:10,935 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:10,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:11,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:11,136 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:30:11,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:11,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1256597629, now seen corresponding path program 69 times [2021-10-06 21:30:11,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:11,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338580809] [2021-10-06 21:30:11,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:30:11,138 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:11,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:11,139 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:11,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-06 21:30:13,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:30:13,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:13,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:30:13,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:14,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:15,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:15,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338580809] [2021-10-06 21:30:15,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338580809] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:15,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:15,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:30:15,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040030616] [2021-10-06 21:30:15,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:30:15,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:15,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:30:15,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:30:15,176 INFO L87 Difference]: Start difference. First operand 14242 states and 69406 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:20,140 INFO L93 Difference]: Finished difference Result 19744 states and 90180 transitions. [2021-10-06 21:30:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:30:20,141 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:30:20,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:20,214 INFO L225 Difference]: With dead ends: 19744 [2021-10-06 21:30:20,214 INFO L226 Difference]: Without dead ends: 19730 [2021-10-06 21:30:20,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 4591.4ms TimeCoverageRelationStatistics Valid=956, Invalid=2704, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:30:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19730 states. [2021-10-06 21:30:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19730 to 14488. [2021-10-06 21:30:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14488 states, 14487 states have (on average 4.86498239801201) internal successors, (70479), 14487 states have internal predecessors, (70479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14488 states to 14488 states and 70479 transitions. [2021-10-06 21:30:20,791 INFO L78 Accepts]: Start accepts. Automaton has 14488 states and 70479 transitions. Word has length 22 [2021-10-06 21:30:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:20,791 INFO L470 AbstractCegarLoop]: Abstraction has 14488 states and 70479 transitions. [2021-10-06 21:30:20,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand 14488 states and 70479 transitions. [2021-10-06 21:30:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:30:20,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:20,914 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:20,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:21,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:21,128 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:30:21,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:21,128 INFO L82 PathProgramCache]: Analyzing trace with hash 207465747, now seen corresponding path program 70 times [2021-10-06 21:30:21,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:21,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712968582] [2021-10-06 21:30:21,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:30:21,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:21,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:21,131 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:21,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-06 21:30:23,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:30:23,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:23,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:30:23,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:23,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:24,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:24,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712968582] [2021-10-06 21:30:24,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712968582] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:24,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:24,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:30:24,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15941099] [2021-10-06 21:30:24,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:30:24,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:24,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:30:24,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:30:24,518 INFO L87 Difference]: Start difference. First operand 14488 states and 70479 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:29,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:29,045 INFO L93 Difference]: Finished difference Result 19898 states and 90840 transitions. [2021-10-06 21:30:29,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:30:29,046 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:30:29,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:29,128 INFO L225 Difference]: With dead ends: 19898 [2021-10-06 21:30:29,128 INFO L226 Difference]: Without dead ends: 19884 [2021-10-06 21:30:29,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 4260.9ms TimeCoverageRelationStatistics Valid=950, Invalid=2710, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:30:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19884 states. [2021-10-06 21:30:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19884 to 14688. [2021-10-06 21:30:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14688 states, 14687 states have (on average 4.860216518009124) internal successors, (71382), 14687 states have internal predecessors, (71382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14688 states to 14688 states and 71382 transitions. [2021-10-06 21:30:29,825 INFO L78 Accepts]: Start accepts. Automaton has 14688 states and 71382 transitions. Word has length 22 [2021-10-06 21:30:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:29,826 INFO L470 AbstractCegarLoop]: Abstraction has 14688 states and 71382 transitions. [2021-10-06 21:30:29,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand 14688 states and 71382 transitions. [2021-10-06 21:30:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:30:29,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:29,867 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:29,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:30,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:30,068 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:30:30,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:30,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1304276993, now seen corresponding path program 71 times [2021-10-06 21:30:30,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:30,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985224372] [2021-10-06 21:30:30,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:30:30,070 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:30,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:30,072 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:30,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-06 21:30:32,387 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:30:32,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:32,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:30:32,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:30:33,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:33,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:33,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985224372] [2021-10-06 21:30:33,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985224372] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:33,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:33,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-06 21:30:33,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319569241] [2021-10-06 21:30:33,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:30:33,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:30:33,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:30:33,911 INFO L87 Difference]: Start difference. First operand 14688 states and 71382 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:38,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:38,965 INFO L93 Difference]: Finished difference Result 21232 states and 96163 transitions. [2021-10-06 21:30:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-06 21:30:38,966 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:30:38,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:39,055 INFO L225 Difference]: With dead ends: 21232 [2021-10-06 21:30:39,056 INFO L226 Difference]: Without dead ends: 21218 [2021-10-06 21:30:39,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 4673.2ms TimeCoverageRelationStatistics Valid=972, Invalid=3060, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 21:30:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21218 states. [2021-10-06 21:30:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21218 to 14876. [2021-10-06 21:30:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14876 states, 14875 states have (on average 4.863462184873949) internal successors, (72344), 14875 states have internal predecessors, (72344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14876 states to 14876 states and 72344 transitions. [2021-10-06 21:30:39,703 INFO L78 Accepts]: Start accepts. Automaton has 14876 states and 72344 transitions. Word has length 22 [2021-10-06 21:30:39,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:39,703 INFO L470 AbstractCegarLoop]: Abstraction has 14876 states and 72344 transitions. [2021-10-06 21:30:39,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:39,703 INFO L276 IsEmpty]: Start isEmpty. Operand 14876 states and 72344 transitions. [2021-10-06 21:30:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:30:39,738 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:39,738 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:39,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:39,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:39,939 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:30:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:39,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1491050093, now seen corresponding path program 72 times [2021-10-06 21:30:39,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:39,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883286264] [2021-10-06 21:30:39,941 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:30:39,941 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:39,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:39,942 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:39,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-06 21:30:42,534 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:30:42,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:42,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:30:42,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:43,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:44,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:44,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883286264] [2021-10-06 21:30:44,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883286264] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:44,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:44,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:30:44,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888841362] [2021-10-06 21:30:44,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:30:44,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:44,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:30:44,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:30:44,458 INFO L87 Difference]: Start difference. First operand 14876 states and 72344 transitions. Second operand has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:52,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:52,810 INFO L93 Difference]: Finished difference Result 26556 states and 118991 transitions. [2021-10-06 21:30:52,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-06 21:30:52,811 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:30:52,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:52,928 INFO L225 Difference]: With dead ends: 26556 [2021-10-06 21:30:52,928 INFO L226 Difference]: Without dead ends: 26521 [2021-10-06 21:30:52,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2800 ImplicationChecksByTransitivity, 7593.2ms TimeCoverageRelationStatistics Valid=1498, Invalid=6874, Unknown=0, NotChecked=0, Total=8372 [2021-10-06 21:30:53,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26521 states. [2021-10-06 21:30:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26521 to 16056. [2021-10-06 21:30:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16056 states, 16055 states have (on average 4.88433509810028) internal successors, (78418), 16055 states have internal predecessors, (78418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:53,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16056 states to 16056 states and 78418 transitions. [2021-10-06 21:30:53,865 INFO L78 Accepts]: Start accepts. Automaton has 16056 states and 78418 transitions. Word has length 22 [2021-10-06 21:30:53,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:53,866 INFO L470 AbstractCegarLoop]: Abstraction has 16056 states and 78418 transitions. [2021-10-06 21:30:53,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 16056 states and 78418 transitions. [2021-10-06 21:30:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:30:53,910 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:53,910 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:53,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:54,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:54,111 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:30:54,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:54,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1779026649, now seen corresponding path program 73 times [2021-10-06 21:30:54,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:54,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480780796] [2021-10-06 21:30:54,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:30:54,114 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:54,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:54,116 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:54,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-06 21:30:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:30:56,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:30:56,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:56,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:57,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:57,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480780796] [2021-10-06 21:30:57,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480780796] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:57,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:57,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:30:57,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700853427] [2021-10-06 21:30:57,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:30:57,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:57,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:30:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:30:57,847 INFO L87 Difference]: Start difference. First operand 16056 states and 78418 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:04,247 INFO L93 Difference]: Finished difference Result 21903 states and 100789 transitions. [2021-10-06 21:31:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 21:31:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:31:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:04,332 INFO L225 Difference]: With dead ends: 21903 [2021-10-06 21:31:04,333 INFO L226 Difference]: Without dead ends: 21896 [2021-10-06 21:31:04,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1397 ImplicationChecksByTransitivity, 6016.6ms TimeCoverageRelationStatistics Valid=1289, Invalid=3823, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 21:31:04,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21896 states. [2021-10-06 21:31:04,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21896 to 16318. [2021-10-06 21:31:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16318 states, 16317 states have (on average 4.876754305325734) internal successors, (79574), 16317 states have internal predecessors, (79574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16318 states to 16318 states and 79574 transitions. [2021-10-06 21:31:05,191 INFO L78 Accepts]: Start accepts. Automaton has 16318 states and 79574 transitions. Word has length 22 [2021-10-06 21:31:05,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:05,191 INFO L470 AbstractCegarLoop]: Abstraction has 16318 states and 79574 transitions. [2021-10-06 21:31:05,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 16318 states and 79574 transitions. [2021-10-06 21:31:05,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:31:05,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:05,234 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:05,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:05,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:05,435 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:31:05,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:05,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1978898883, now seen corresponding path program 74 times [2021-10-06 21:31:05,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:05,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471026496] [2021-10-06 21:31:05,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:31:05,438 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:05,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:05,439 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:05,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-06 21:31:08,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:31:08,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:08,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:31:08,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:08,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:09,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:09,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471026496] [2021-10-06 21:31:09,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471026496] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:09,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:09,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:31:09,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585441076] [2021-10-06 21:31:09,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:31:09,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:09,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:31:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:31:09,602 INFO L87 Difference]: Start difference. First operand 16318 states and 79574 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:15,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:15,501 INFO L93 Difference]: Finished difference Result 23375 states and 106602 transitions. [2021-10-06 21:31:15,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-06 21:31:15,502 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:31:15,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:15,592 INFO L225 Difference]: With dead ends: 23375 [2021-10-06 21:31:15,592 INFO L226 Difference]: Without dead ends: 23368 [2021-10-06 21:31:15,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 5549.6ms TimeCoverageRelationStatistics Valid=1285, Invalid=3685, Unknown=0, NotChecked=0, Total=4970 [2021-10-06 21:31:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23368 states. [2021-10-06 21:31:16,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23368 to 16458. [2021-10-06 21:31:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16458 states, 16457 states have (on average 4.875493710882907) internal successors, (80236), 16457 states have internal predecessors, (80236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:16,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16458 states to 16458 states and 80236 transitions. [2021-10-06 21:31:16,375 INFO L78 Accepts]: Start accepts. Automaton has 16458 states and 80236 transitions. Word has length 22 [2021-10-06 21:31:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:16,375 INFO L470 AbstractCegarLoop]: Abstraction has 16458 states and 80236 transitions. [2021-10-06 21:31:16,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 16458 states and 80236 transitions. [2021-10-06 21:31:16,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:31:16,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:16,419 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:16,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2021-10-06 21:31:16,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:16,620 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:31:16,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:16,621 INFO L82 PathProgramCache]: Analyzing trace with hash 986140251, now seen corresponding path program 75 times [2021-10-06 21:31:16,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:16,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197649306] [2021-10-06 21:31:16,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:31:16,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:16,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:16,624 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:16,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-06 21:31:19,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:31:19,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:19,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:31:19,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:20,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:21,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:21,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197649306] [2021-10-06 21:31:21,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197649306] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:21,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:21,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:31:21,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349918998] [2021-10-06 21:31:21,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:31:21,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:21,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:31:21,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:31:21,224 INFO L87 Difference]: Start difference. First operand 16458 states and 80236 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:28,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:28,214 INFO L93 Difference]: Finished difference Result 24283 states and 110378 transitions. [2021-10-06 21:31:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-06 21:31:28,218 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:31:28,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:28,316 INFO L225 Difference]: With dead ends: 24283 [2021-10-06 21:31:28,317 INFO L226 Difference]: Without dead ends: 24276 [2021-10-06 21:31:28,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 6688.5ms TimeCoverageRelationStatistics Valid=1356, Invalid=4194, Unknown=0, NotChecked=0, Total=5550 [2021-10-06 21:31:28,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24276 states. [2021-10-06 21:31:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24276 to 16596. [2021-10-06 21:31:29,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16596 states, 16595 states have (on average 4.883338354926183) internal successors, (81039), 16595 states have internal predecessors, (81039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16596 states to 16596 states and 81039 transitions. [2021-10-06 21:31:29,261 INFO L78 Accepts]: Start accepts. Automaton has 16596 states and 81039 transitions. Word has length 22 [2021-10-06 21:31:29,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:29,262 INFO L470 AbstractCegarLoop]: Abstraction has 16596 states and 81039 transitions. [2021-10-06 21:31:29,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:29,262 INFO L276 IsEmpty]: Start isEmpty. Operand 16596 states and 81039 transitions. [2021-10-06 21:31:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:31:29,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:29,306 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:29,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:29,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:29,507 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:31:29,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:29,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1844715769, now seen corresponding path program 76 times [2021-10-06 21:31:29,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:29,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396153553] [2021-10-06 21:31:29,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:31:29,509 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:29,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:29,510 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:29,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-06 21:31:31,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:31:31,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:31,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:31:31,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:32,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:33,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:33,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396153553] [2021-10-06 21:31:33,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396153553] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:33,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:33,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:31:33,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344205420] [2021-10-06 21:31:33,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:31:33,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:33,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:31:33,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:31:33,323 INFO L87 Difference]: Start difference. First operand 16596 states and 81039 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:39,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:39,009 INFO L93 Difference]: Finished difference Result 23315 states and 106898 transitions. [2021-10-06 21:31:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:31:39,010 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:31:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:39,182 INFO L225 Difference]: With dead ends: 23315 [2021-10-06 21:31:39,182 INFO L226 Difference]: Without dead ends: 23308 [2021-10-06 21:31:39,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 5298.8ms TimeCoverageRelationStatistics Valid=996, Invalid=2664, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:31:39,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23308 states. [2021-10-06 21:31:39,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23308 to 16692. [2021-10-06 21:31:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16692 states, 16691 states have (on average 4.889221736265053) internal successors, (81606), 16691 states have internal predecessors, (81606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16692 states to 16692 states and 81606 transitions. [2021-10-06 21:31:39,913 INFO L78 Accepts]: Start accepts. Automaton has 16692 states and 81606 transitions. Word has length 22 [2021-10-06 21:31:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:39,915 INFO L470 AbstractCegarLoop]: Abstraction has 16692 states and 81606 transitions. [2021-10-06 21:31:39,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:39,916 INFO L276 IsEmpty]: Start isEmpty. Operand 16692 states and 81606 transitions. [2021-10-06 21:31:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:31:39,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:39,958 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:39,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:40,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:40,159 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:31:40,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:40,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1875488647, now seen corresponding path program 77 times [2021-10-06 21:31:40,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:40,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384890419] [2021-10-06 21:31:40,161 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:31:40,161 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:40,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:40,162 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:40,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-06 21:31:42,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:31:42,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:42,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:31:42,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:43,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:44,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:44,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:44,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384890419] [2021-10-06 21:31:44,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384890419] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:44,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:44,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:31:44,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268851382] [2021-10-06 21:31:44,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:31:44,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:31:44,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:31:44,139 INFO L87 Difference]: Start difference. First operand 16692 states and 81606 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:49,583 INFO L93 Difference]: Finished difference Result 23847 states and 109195 transitions. [2021-10-06 21:31:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:31:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:31:49,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:49,682 INFO L225 Difference]: With dead ends: 23847 [2021-10-06 21:31:49,682 INFO L226 Difference]: Without dead ends: 23840 [2021-10-06 21:31:49,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 5188.4ms TimeCoverageRelationStatistics Valid=1032, Invalid=2874, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 21:31:49,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23840 states. [2021-10-06 21:31:50,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23840 to 16792. [2021-10-06 21:31:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16792 states, 16791 states have (on average 4.894288606991841) internal successors, (82180), 16791 states have internal predecessors, (82180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:50,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16792 states to 16792 states and 82180 transitions. [2021-10-06 21:31:50,525 INFO L78 Accepts]: Start accepts. Automaton has 16792 states and 82180 transitions. Word has length 22 [2021-10-06 21:31:50,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:50,525 INFO L470 AbstractCegarLoop]: Abstraction has 16792 states and 82180 transitions. [2021-10-06 21:31:50,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 16792 states and 82180 transitions. [2021-10-06 21:31:50,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:31:50,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:50,570 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:50,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:50,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:50,771 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:31:50,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:50,772 INFO L82 PathProgramCache]: Analyzing trace with hash 578273173, now seen corresponding path program 78 times [2021-10-06 21:31:50,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:50,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198533923] [2021-10-06 21:31:50,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:31:50,773 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:50,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:50,774 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:50,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-06 21:31:53,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:31:53,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:53,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:31:53,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:54,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:55,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:55,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198533923] [2021-10-06 21:31:55,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198533923] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:55,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:55,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:31:55,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445965641] [2021-10-06 21:31:55,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:31:55,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:55,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:31:55,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:31:55,056 INFO L87 Difference]: Start difference. First operand 16792 states and 82180 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:02,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:02,068 INFO L93 Difference]: Finished difference Result 24251 states and 110853 transitions. [2021-10-06 21:32:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-06 21:32:02,069 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 22 [2021-10-06 21:32:02,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:02,163 INFO L225 Difference]: With dead ends: 24251 [2021-10-06 21:32:02,163 INFO L226 Difference]: Without dead ends: 24244 [2021-10-06 21:32:02,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1447 ImplicationChecksByTransitivity, 6585.8ms TimeCoverageRelationStatistics Valid=1279, Invalid=3977, Unknown=0, NotChecked=0, Total=5256 [2021-10-06 21:32:02,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24244 states. [2021-10-06 21:32:02,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24244 to 16908. [2021-10-06 21:32:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16908 states, 16907 states have (on average 4.899213343585497) internal successors, (82831), 16907 states have internal predecessors, (82831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16908 states to 16908 states and 82831 transitions. [2021-10-06 21:32:02,931 INFO L78 Accepts]: Start accepts. Automaton has 16908 states and 82831 transitions. Word has length 22 [2021-10-06 21:32:02,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:02,931 INFO L470 AbstractCegarLoop]: Abstraction has 16908 states and 82831 transitions. [2021-10-06 21:32:02,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:02,931 INFO L276 IsEmpty]: Start isEmpty. Operand 16908 states and 82831 transitions. [2021-10-06 21:32:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:32:03,121 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:03,121 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:03,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2021-10-06 21:32:03,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:32:03,330 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:32:03,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash 121877472, now seen corresponding path program 79 times [2021-10-06 21:32:03,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:03,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535734612] [2021-10-06 21:32:03,332 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:32:03,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:03,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:03,333 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:32:03,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process Received shutdown request... [2021-10-06 21:32:03,735 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:32:03,739 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:32:04,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Ended with exit code 0 [2021-10-06 21:32:04,756 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:32:04,757 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. [2021-10-06 21:32:04,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:32:04,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:32:04,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:32:04,759 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:32:04,759 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:32:04,759 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:32:04,759 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:32:04,759 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:32:04,759 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:32:04,759 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:32:04,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:32:04,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:32:04,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:32:04,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:32:04,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:32:04,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:32:04,768 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:32:04,769 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:32:04,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:32:04 BasicIcfg [2021-10-06 21:32:04,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:32:04,774 INFO L168 Benchmark]: Toolchain (without parser) took 742447.18 ms. Allocated memory was 176.2 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 150.4 MB in the beginning and 649.6 MB in the end (delta: -499.2 MB). Peak memory consumption was 2.1 GB. Max. memory is 8.0 GB. [2021-10-06 21:32:04,775 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 176.2 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:32:04,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.07 ms. Allocated memory is still 176.2 MB. Free memory was 150.2 MB in the beginning and 138.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:32:04,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.08 ms. Allocated memory is still 176.2 MB. Free memory was 138.9 MB in the beginning and 137.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:32:04,778 INFO L168 Benchmark]: Boogie Preprocessor took 35.60 ms. Allocated memory is still 176.2 MB. Free memory was 137.5 MB in the beginning and 136.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:32:04,779 INFO L168 Benchmark]: RCFGBuilder took 694.38 ms. Allocated memory is still 176.2 MB. Free memory was 135.8 MB in the beginning and 154.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:32:04,779 INFO L168 Benchmark]: TraceAbstraction took 741163.66 ms. Allocated memory was 176.2 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 154.0 MB in the beginning and 649.6 MB in the end (delta: -495.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 8.0 GB. [2021-10-06 21:32:04,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 176.2 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 473.07 ms. Allocated memory is still 176.2 MB. Free memory was 150.2 MB in the beginning and 138.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 63.08 ms. Allocated memory is still 176.2 MB. Free memory was 138.9 MB in the beginning and 137.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.60 ms. Allocated memory is still 176.2 MB. Free memory was 137.5 MB in the beginning and 136.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 694.38 ms. Allocated memory is still 176.2 MB. Free memory was 135.8 MB in the beginning and 154.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 741163.66 ms. Allocated memory was 176.2 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 154.0 MB in the beginning and 649.6 MB in the end (delta: -495.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16012.8ms, 130 PlacesBefore, 43 PlacesAfterwards, 136 TransitionsBefore, 36 TransitionsAfterwards, 3570 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 13 ChoiceCompositions, 145 TotalNumberOfCompositions, 3384 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3384, positive: 3384, positive conditional: 0, positive unconditional: 3384, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2193, positive: 2193, positive conditional: 0, positive unconditional: 2193, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2193, positive: 2167, positive conditional: 0, positive unconditional: 2167, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1243, positive: 1243, positive conditional: 0, positive unconditional: 1243, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3384, positive: 1191, positive conditional: 0, positive unconditional: 1191, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2193, unknown conditional: 0, unknown unconditional: 2193] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 24 with TraceHistMax 3,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances [2021-10-06 21:32:04,818 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 CFG has 7 procedures, 163 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 740969.5ms, OverallIterations: 91, TraceHistogramMax: 3, EmptinessCheckTime: 2306.3ms, AutomataDifference: 445294.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16078.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3184 SDtfs, 35943 SDslu, 34865 SDs, 0 SdLazy, 28518 SolverSat, 12768 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41634.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7017 GetRequests, 2054 SyntacticMatches, 0 SemanticMatches, 4963 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86518 ImplicationChecksByTransitivity, 415773.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16908occurred in iteration=90, InterpolantAutomatonStates: 4548, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35169.4ms AutomataMinimizationTime, 90 MinimizatonAttempts, 385327 StatesRemovedByMinimization, 77 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 770.2ms SsaConstructionTime, 14294.1ms SatisfiabilityAnalysisTime, 114561.5ms InterpolantComputationTime, 1836 NumberOfCodeBlocks, 1830 NumberOfCodeBlocksAsserted, 178 NumberOfCheckSat, 3492 ConstructedInterpolants, 6 QuantifiedInterpolants, 52186 SizeOfPredicates, 802 NumberOfNonLiveVariables, 8153 ConjunctsInSsa, 1453 ConjunctsInUnsatCore, 180 InterpolantComputations, 20 PerfectInterpolantSequences, 38/1428 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown