/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/bench-exp2x6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 19:50:05,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 19:50:05,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 19:50:05,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 19:50:05,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 19:50:05,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 19:50:05,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 19:50:05,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 19:50:05,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 19:50:05,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 19:50:05,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 19:50:05,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 19:50:05,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 19:50:05,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 19:50:05,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 19:50:05,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 19:50:05,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 19:50:05,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 19:50:05,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 19:50:05,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 19:50:05,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 19:50:05,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 19:50:05,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 19:50:05,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 19:50:05,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 19:50:05,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 19:50:05,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 19:50:05,569 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 19:50:05,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 19:50:05,570 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 19:50:05,570 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 19:50:05,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 19:50:05,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 19:50:05,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 19:50:05,573 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 19:50:05,573 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 19:50:05,574 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 19:50:05,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 19:50:05,574 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 19:50:05,574 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 19:50:05,574 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 19:50:05,574 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 19:50:05,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 19:50:05,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 19:50:05,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 19:50:05,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 19:50:05,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:50:05,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 19:50:05,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 19:50:05,577 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 19:50:05,577 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 19:50:05,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 19:50:05,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 19:50:05,578 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 19:50:06,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 19:50:06,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 19:50:06,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 19:50:06,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 19:50:06,044 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 19:50:06,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x6.wvr.c [2021-10-13 19:50:06,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38c011716/8ebea85186724cdfbf57329d2c77bb7c/FLAGf26806dda [2021-10-13 19:50:06,821 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 19:50:06,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c [2021-10-13 19:50:06,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38c011716/8ebea85186724cdfbf57329d2c77bb7c/FLAGf26806dda [2021-10-13 19:50:06,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38c011716/8ebea85186724cdfbf57329d2c77bb7c [2021-10-13 19:50:06,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 19:50:06,875 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 19:50:06,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 19:50:06,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 19:50:06,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 19:50:06,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:06" (1/1) ... [2021-10-13 19:50:06,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c2f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:06, skipping insertion in model container [2021-10-13 19:50:06,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:06" (1/1) ... [2021-10-13 19:50:06,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 19:50:06,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 19:50:07,253 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/bench-exp2x6.wvr.c[2453,2466] [2021-10-13 19:50:07,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:50:07,291 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 19:50:07,353 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/bench-exp2x6.wvr.c[2453,2466] [2021-10-13 19:50:07,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:50:07,387 INFO L208 MainTranslator]: Completed translation [2021-10-13 19:50:07,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07 WrapperNode [2021-10-13 19:50:07,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 19:50:07,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 19:50:07,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 19:50:07,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 19:50:07,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 19:50:07,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 19:50:07,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 19:50:07,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 19:50:07,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 19:50:07,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 19:50:07,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 19:50:07,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 19:50:07,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (1/1) ... [2021-10-13 19:50:07,572 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:50:07,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:50:07,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 19:50:07,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 19:50:07,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 19:50:07,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 19:50:07,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 19:50:07,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 19:50:07,703 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 19:50:07,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 19:50:07,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 19:50:07,704 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-13 19:50:07,704 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-13 19:50:07,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 19:50:07,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 19:50:07,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 19:50:07,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 19:50:07,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 19:50:07,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 19:50:07,708 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 19:50:08,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 19:50:08,427 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 19:50:08,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:08 BoogieIcfgContainer [2021-10-13 19:50:08,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 19:50:08,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 19:50:08,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 19:50:08,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 19:50:08,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:50:06" (1/3) ... [2021-10-13 19:50:08,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d53c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:08, skipping insertion in model container [2021-10-13 19:50:08,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:07" (2/3) ... [2021-10-13 19:50:08,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d53c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:08, skipping insertion in model container [2021-10-13 19:50:08,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:08" (3/3) ... [2021-10-13 19:50:08,449 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2021-10-13 19:50:08,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 19:50:08,457 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-13 19:50:08,457 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 19:50:08,547 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,551 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,551 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,552 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,554 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,555 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,556 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,556 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,556 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,557 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,559 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,560 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,560 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,566 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,581 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,581 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,590 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,591 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,595 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,597 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:50:08,615 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-13 19:50:08,683 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 19:50:08,694 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 19:50:08,694 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-13 19:50:08,715 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 19:50:08,729 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 149 transitions, 330 flow [2021-10-13 19:50:08,733 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 149 transitions, 330 flow [2021-10-13 19:50:08,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 330 flow [2021-10-13 19:50:08,816 INFO L129 PetriNetUnfolder]: 10/145 cut-off events. [2021-10-13 19:50:08,817 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-13 19:50:08,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 10/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2021-10-13 19:50:08,831 INFO L116 LiptonReduction]: Number of co-enabled transitions 2736 [2021-10-13 19:50:28,186 INFO L131 LiptonReduction]: Checked pairs total: 3172 [2021-10-13 19:50:28,186 INFO L133 LiptonReduction]: Total number of compositions: 144 [2021-10-13 19:50:28,201 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 47 transitions, 126 flow [2021-10-13 19:50:28,248 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:28,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-13 19:50:28,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:28,260 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-13 19:50:28,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:28,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:28,269 INFO L82 PathProgramCache]: Analyzing trace with hash 553, now seen corresponding path program 1 times [2021-10-13 19:50:28,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:28,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10174350] [2021-10-13 19:50:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:28,285 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:28,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:28,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:28,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 19:50:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:28,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 19:50:28,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:28,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:28,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:28,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10174350] [2021-10-13 19:50:28,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10174350] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:28,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:28,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-13 19:50:28,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183269177] [2021-10-13 19:50:28,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 19:50:28,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:28,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 19:50:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 19:50:28,387 INFO L87 Difference]: Start difference. First operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:28,416 INFO L93 Difference]: Finished difference Result 180 states and 692 transitions. [2021-10-13 19:50:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 19:50:28,418 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-13 19:50:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:28,433 INFO L225 Difference]: With dead ends: 180 [2021-10-13 19:50:28,434 INFO L226 Difference]: Without dead ends: 180 [2021-10-13 19:50:28,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 19:50:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-13 19:50:28,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-13 19:50:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 165 states have (on average 4.193939393939394) internal successors, (692), 179 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 692 transitions. [2021-10-13 19:50:28,508 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 692 transitions. Word has length 1 [2021-10-13 19:50:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:28,509 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 692 transitions. [2021-10-13 19:50:28,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:28,509 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 692 transitions. [2021-10-13 19:50:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:50:28,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:28,510 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:50:28,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:28,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:28,722 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:28,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:28,724 INFO L82 PathProgramCache]: Analyzing trace with hash 542398, now seen corresponding path program 1 times [2021-10-13 19:50:28,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:28,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587258323] [2021-10-13 19:50:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:28,726 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:28,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:28,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:28,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 19:50:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:28,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:50:28,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:29,195 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-13 19:50:29,196 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 5 case distinctions, treesize of input 47 treesize of output 79 [2021-10-13 19:50:29,212 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 106 treesize of output 104 [2021-10-13 19:50:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:30,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:30,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:30,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587258323] [2021-10-13 19:50:30,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587258323] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:30,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:30,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 19:50:30,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633066067] [2021-10-13 19:50:30,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:50:30,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:30,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:50:30,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:30,723 INFO L87 Difference]: Start difference. First operand 180 states and 692 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:30,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:30,822 INFO L93 Difference]: Finished difference Result 170 states and 656 transitions. [2021-10-13 19:50:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 19:50:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:30,827 INFO L225 Difference]: With dead ends: 170 [2021-10-13 19:50:30,828 INFO L226 Difference]: Without dead ends: 170 [2021-10-13 19:50:30,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-13 19:50:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-13 19:50:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 157 states have (on average 4.178343949044586) internal successors, (656), 169 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 656 transitions. [2021-10-13 19:50:30,847 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 656 transitions. Word has length 3 [2021-10-13 19:50:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:30,848 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 656 transitions. [2021-10-13 19:50:30,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 656 transitions. [2021-10-13 19:50:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:50:30,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:30,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:50:30,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:31,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:31,066 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:31,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:31,066 INFO L82 PathProgramCache]: Analyzing trace with hash 542400, now seen corresponding path program 1 times [2021-10-13 19:50:31,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:31,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744657620] [2021-10-13 19:50:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:31,073 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:31,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:31,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:31,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 19:50:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:31,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:50:31,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:31,380 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 19:50:31,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 148 [2021-10-13 19:50:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:35,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:35,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:35,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744657620] [2021-10-13 19:50:35,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744657620] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:35,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:35,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 19:50:35,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465342215] [2021-10-13 19:50:35,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:50:35,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:35,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:50:35,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:35,545 INFO L87 Difference]: Start difference. First operand 170 states and 656 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:35,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:35,620 INFO L93 Difference]: Finished difference Result 160 states and 620 transitions. [2021-10-13 19:50:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:35,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 19:50:35,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:35,624 INFO L225 Difference]: With dead ends: 160 [2021-10-13 19:50:35,624 INFO L226 Difference]: Without dead ends: 160 [2021-10-13 19:50:35,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:35,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-13 19:50:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-13 19:50:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 4.1610738255033555) internal successors, (620), 159 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 620 transitions. [2021-10-13 19:50:35,639 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 620 transitions. Word has length 3 [2021-10-13 19:50:35,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:35,639 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 620 transitions. [2021-10-13 19:50:35,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 620 transitions. [2021-10-13 19:50:35,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:50:35,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:35,640 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:50:35,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:35,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:35,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:35,854 INFO L82 PathProgramCache]: Analyzing trace with hash 521257500, now seen corresponding path program 1 times [2021-10-13 19:50:35,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:35,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338367878] [2021-10-13 19:50:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:35,856 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:35,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:35,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:35,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 19:50:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:35,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 19:50:35,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:36,170 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 19:50:36,170 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 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-13 19:50:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:36,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:36,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:36,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338367878] [2021-10-13 19:50:36,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338367878] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:36,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:36,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 19:50:36,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538148060] [2021-10-13 19:50:36,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:50:36,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:50:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:50:36,711 INFO L87 Difference]: Start difference. First operand 160 states and 620 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:36,757 INFO L93 Difference]: Finished difference Result 152 states and 596 transitions. [2021-10-13 19:50:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:36,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 19:50:36,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:36,761 INFO L225 Difference]: With dead ends: 152 [2021-10-13 19:50:36,762 INFO L226 Difference]: Without dead ends: 152 [2021-10-13 19:50:36,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:50:36,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-13 19:50:36,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-13 19:50:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 143 states have (on average 4.1678321678321675) internal successors, (596), 151 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 596 transitions. [2021-10-13 19:50:36,774 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 596 transitions. Word has length 5 [2021-10-13 19:50:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:36,774 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 596 transitions. [2021-10-13 19:50:36,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 596 transitions. [2021-10-13 19:50:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:50:36,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:36,775 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:50:36,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 19:50:36,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:36,987 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:36,989 INFO L82 PathProgramCache]: Analyzing trace with hash 521257501, now seen corresponding path program 1 times [2021-10-13 19:50:36,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:36,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751474539] [2021-10-13 19:50:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:36,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:36,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:36,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:36,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 19:50:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:37,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:50:37,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:37,286 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-13 19:50:37,287 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 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-13 19:50:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:37,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:37,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:37,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751474539] [2021-10-13 19:50:37,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751474539] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:37,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:37,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 19:50:37,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788721887] [2021-10-13 19:50:37,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:50:37,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:50:37,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:37,450 INFO L87 Difference]: Start difference. First operand 152 states and 596 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:37,503 INFO L93 Difference]: Finished difference Result 144 states and 572 transitions. [2021-10-13 19:50:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:37,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 19:50:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:37,506 INFO L225 Difference]: With dead ends: 144 [2021-10-13 19:50:37,507 INFO L226 Difference]: Without dead ends: 144 [2021-10-13 19:50:37,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-13 19:50:37,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-13 19:50:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 137 states have (on average 4.175182481751825) internal successors, (572), 143 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 572 transitions. [2021-10-13 19:50:37,517 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 572 transitions. Word has length 5 [2021-10-13 19:50:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:37,517 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 572 transitions. [2021-10-13 19:50:37,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 572 transitions. [2021-10-13 19:50:37,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:50:37,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:37,519 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:37,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:37,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:37,732 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:37,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:37,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1582702213, now seen corresponding path program 1 times [2021-10-13 19:50:37,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:37,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59083728] [2021-10-13 19:50:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:37,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:37,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:37,736 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:37,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 19:50:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:37,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 19:50:37,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:38,019 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-13 19:50:38,020 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 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-13 19:50:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:38,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:38,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:38,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59083728] [2021-10-13 19:50:38,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59083728] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:38,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:38,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 19:50:38,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214973543] [2021-10-13 19:50:38,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:50:38,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:38,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:50:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:38,225 INFO L87 Difference]: Start difference. First operand 144 states and 572 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:38,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:38,267 INFO L93 Difference]: Finished difference Result 134 states and 536 transitions. [2021-10-13 19:50:38,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:38,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 19:50:38,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:38,269 INFO L225 Difference]: With dead ends: 134 [2021-10-13 19:50:38,270 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 19:50:38,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:38,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 19:50:38,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-13 19:50:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 4.155038759689923) internal successors, (536), 133 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:38,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 536 transitions. [2021-10-13 19:50:38,277 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 536 transitions. Word has length 7 [2021-10-13 19:50:38,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:38,278 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 536 transitions. [2021-10-13 19:50:38,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:38,278 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 536 transitions. [2021-10-13 19:50:38,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:50:38,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:38,279 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:38,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:38,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:38,481 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:38,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1582702214, now seen corresponding path program 1 times [2021-10-13 19:50:38,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:38,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420159838] [2021-10-13 19:50:38,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:38,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:38,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:38,485 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:38,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 19:50:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:38,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 19:50:38,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:38,761 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 19:50:38,762 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 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-13 19:50:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:39,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:39,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:39,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420159838] [2021-10-13 19:50:39,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420159838] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:39,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:39,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 19:50:39,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490810650] [2021-10-13 19:50:39,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:50:39,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:39,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:50:39,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:50:39,369 INFO L87 Difference]: Start difference. First operand 134 states and 536 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:39,428 INFO L93 Difference]: Finished difference Result 124 states and 500 transitions. [2021-10-13 19:50:39,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:39,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 19:50:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:39,430 INFO L225 Difference]: With dead ends: 124 [2021-10-13 19:50:39,430 INFO L226 Difference]: Without dead ends: 124 [2021-10-13 19:50:39,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:50:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-13 19:50:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-13 19:50:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 4.132231404958677) internal successors, (500), 123 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 500 transitions. [2021-10-13 19:50:39,438 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 500 transitions. Word has length 7 [2021-10-13 19:50:39,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:39,438 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 500 transitions. [2021-10-13 19:50:39,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 500 transitions. [2021-10-13 19:50:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 19:50:39,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:39,440 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:39,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 19:50:39,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:39,641 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:39,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:39,642 INFO L82 PathProgramCache]: Analyzing trace with hash -558390861, now seen corresponding path program 1 times [2021-10-13 19:50:39,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:39,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092395722] [2021-10-13 19:50:39,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:39,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:39,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:39,645 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:39,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 19:50:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:39,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:50:39,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:40,000 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-13 19:50:40,001 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 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-13 19:50:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:40,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:40,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:40,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092395722] [2021-10-13 19:50:40,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092395722] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:40,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:40,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 19:50:40,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969660462] [2021-10-13 19:50:40,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:50:40,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:40,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:50:40,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:50:40,556 INFO L87 Difference]: Start difference. First operand 124 states and 500 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:40,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:40,611 INFO L93 Difference]: Finished difference Result 108 states and 420 transitions. [2021-10-13 19:50:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:40,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 9 [2021-10-13 19:50:40,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:40,615 INFO L225 Difference]: With dead ends: 108 [2021-10-13 19:50:40,615 INFO L226 Difference]: Without dead ends: 108 [2021-10-13 19:50:40,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.1ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:50:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-13 19:50:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-13 19:50:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 3.9622641509433962) internal successors, (420), 107 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 420 transitions. [2021-10-13 19:50:40,621 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 420 transitions. Word has length 9 [2021-10-13 19:50:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:40,622 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 420 transitions. [2021-10-13 19:50:40,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 420 transitions. [2021-10-13 19:50:40,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 19:50:40,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:40,624 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:40,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:40,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:40,838 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:40,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:40,839 INFO L82 PathProgramCache]: Analyzing trace with hash -558390860, now seen corresponding path program 1 times [2021-10-13 19:50:40,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:40,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63251340] [2021-10-13 19:50:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:40,843 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:40,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:40,849 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:40,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 19:50:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:40,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:50:40,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:41,164 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-13 19:50:41,165 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 5 case distinctions, treesize of input 41 treesize of output 73 [2021-10-13 19:50:41,173 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 95 treesize of output 93 [2021-10-13 19:50:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:41,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:42,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:42,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63251340] [2021-10-13 19:50:42,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63251340] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:42,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:42,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 19:50:42,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322095646] [2021-10-13 19:50:42,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:50:42,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:50:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:50:42,150 INFO L87 Difference]: Start difference. First operand 108 states and 420 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:42,216 INFO L93 Difference]: Finished difference Result 92 states and 340 transitions. [2021-10-13 19:50:42,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:42,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 19:50:42,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:42,218 INFO L225 Difference]: With dead ends: 92 [2021-10-13 19:50:42,219 INFO L226 Difference]: Without dead ends: 92 [2021-10-13 19:50:42,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 161.9ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:50:42,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-13 19:50:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-13 19:50:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 3.7362637362637363) internal successors, (340), 91 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:42,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 340 transitions. [2021-10-13 19:50:42,225 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 340 transitions. Word has length 9 [2021-10-13 19:50:42,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:42,226 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 340 transitions. [2021-10-13 19:50:42,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 340 transitions. [2021-10-13 19:50:42,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:50:42,229 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:42,229 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:42,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:42,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:42,443 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:42,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:42,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1915921125, now seen corresponding path program 1 times [2021-10-13 19:50:42,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:42,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681457373] [2021-10-13 19:50:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:42,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:42,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:42,447 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:42,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 19:50:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:42,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:50:42,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:42,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:43,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:43,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681457373] [2021-10-13 19:50:43,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681457373] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:43,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:43,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 19:50:43,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045322523] [2021-10-13 19:50:43,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:50:43,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:43,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:50:43,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:43,058 INFO L87 Difference]: Start difference. First operand 92 states and 340 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:43,097 INFO L93 Difference]: Finished difference Result 181 states and 677 transitions. [2021-10-13 19:50:43,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:50:43,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 [2021-10-13 19:50:43,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:43,100 INFO L225 Difference]: With dead ends: 181 [2021-10-13 19:50:43,100 INFO L226 Difference]: Without dead ends: 172 [2021-10-13 19:50:43,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:50:43,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-13 19:50:43,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-13 19:50:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 3.7953216374269005) internal successors, (649), 171 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 649 transitions. [2021-10-13 19:50:43,111 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 649 transitions. Word has length 21 [2021-10-13 19:50:43,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:43,112 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 649 transitions. [2021-10-13 19:50:43,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 649 transitions. [2021-10-13 19:50:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:43,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:43,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:43,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:43,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:43,327 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:43,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:43,328 INFO L82 PathProgramCache]: Analyzing trace with hash -937109729, now seen corresponding path program 1 times [2021-10-13 19:50:43,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:43,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018570309] [2021-10-13 19:50:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:43,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:43,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:43,335 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:43,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 19:50:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:43,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:50:43,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:43,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:43,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:43,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018570309] [2021-10-13 19:50:43,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018570309] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:43,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:43,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 19:50:43,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585505836] [2021-10-13 19:50:43,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:50:43,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:43,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:50:43,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:50:43,692 INFO L87 Difference]: Start difference. First operand 172 states and 649 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:43,827 INFO L93 Difference]: Finished difference Result 292 states and 1017 transitions. [2021-10-13 19:50:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:50:43,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:50:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:43,831 INFO L225 Difference]: With dead ends: 292 [2021-10-13 19:50:43,831 INFO L226 Difference]: Without dead ends: 276 [2021-10-13 19:50:43,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:50:43,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-13 19:50:43,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 216. [2021-10-13 19:50:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.8) internal successors, (817), 215 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 817 transitions. [2021-10-13 19:50:43,844 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 817 transitions. Word has length 22 [2021-10-13 19:50:43,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:43,844 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 817 transitions. [2021-10-13 19:50:43,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 817 transitions. [2021-10-13 19:50:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:43,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:43,847 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:43,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:44,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:44,059 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:44,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:44,060 INFO L82 PathProgramCache]: Analyzing trace with hash -537022204, now seen corresponding path program 1 times [2021-10-13 19:50:44,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:44,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608652050] [2021-10-13 19:50:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:44,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:44,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:44,062 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:44,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 19:50:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:44,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:50:44,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:44,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:44,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:44,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608652050] [2021-10-13 19:50:44,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608652050] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:44,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:44,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-13 19:50:44,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783435485] [2021-10-13 19:50:44,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:50:44,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:44,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:50:44,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:50:44,411 INFO L87 Difference]: Start difference. First operand 216 states and 817 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:44,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:44,545 INFO L93 Difference]: Finished difference Result 262 states and 967 transitions. [2021-10-13 19:50:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:50:44,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2021-10-13 19:50:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:44,549 INFO L225 Difference]: With dead ends: 262 [2021-10-13 19:50:44,550 INFO L226 Difference]: Without dead ends: 262 [2021-10-13 19:50:44,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:50:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-13 19:50:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 244. [2021-10-13 19:50:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 3.8395061728395063) internal successors, (933), 243 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 933 transitions. [2021-10-13 19:50:44,568 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 933 transitions. Word has length 22 [2021-10-13 19:50:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:44,568 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 933 transitions. [2021-10-13 19:50:44,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:44,569 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 933 transitions. [2021-10-13 19:50:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:44,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:44,570 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:44,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:44,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:44,783 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:44,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:44,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1956932113, now seen corresponding path program 2 times [2021-10-13 19:50:44,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:44,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507006819] [2021-10-13 19:50:44,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:50:44,786 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:44,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:44,787 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:44,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 19:50:44,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:50:44,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:44,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:50:44,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:45,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:45,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:45,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507006819] [2021-10-13 19:50:45,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507006819] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:45,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:45,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 19:50:45,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361639917] [2021-10-13 19:50:45,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:50:45,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:45,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:50:45,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:50:45,179 INFO L87 Difference]: Start difference. First operand 244 states and 933 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:45,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:45,336 INFO L93 Difference]: Finished difference Result 292 states and 1087 transitions. [2021-10-13 19:50:45,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:50:45,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:50:45,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:45,340 INFO L225 Difference]: With dead ends: 292 [2021-10-13 19:50:45,340 INFO L226 Difference]: Without dead ends: 292 [2021-10-13 19:50:45,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:50:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-13 19:50:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 274. [2021-10-13 19:50:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 3.857142857142857) internal successors, (1053), 273 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:45,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 1053 transitions. [2021-10-13 19:50:45,365 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 1053 transitions. Word has length 22 [2021-10-13 19:50:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:45,365 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 1053 transitions. [2021-10-13 19:50:45,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:45,366 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 1053 transitions. [2021-10-13 19:50:45,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:45,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:45,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:45,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:45,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:45,580 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash -29338789, now seen corresponding path program 1 times [2021-10-13 19:50:45,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:45,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690856653] [2021-10-13 19:50:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:45,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:45,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:45,584 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:45,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 19:50:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:45,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:50:45,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:45,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:45,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:45,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690856653] [2021-10-13 19:50:45,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690856653] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 19:50:45,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:50:45,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 19:50:45,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149160471] [2021-10-13 19:50:45,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:50:45,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:45,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:50:45,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:50:45,940 INFO L87 Difference]: Start difference. First operand 274 states and 1053 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:46,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:46,119 INFO L93 Difference]: Finished difference Result 528 states and 1863 transitions. [2021-10-13 19:50:46,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:50:46,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 19:50:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:46,125 INFO L225 Difference]: With dead ends: 528 [2021-10-13 19:50:46,125 INFO L226 Difference]: Without dead ends: 506 [2021-10-13 19:50:46,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 19:50:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-10-13 19:50:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 328. [2021-10-13 19:50:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 3.929663608562691) internal successors, (1285), 327 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1285 transitions. [2021-10-13 19:50:46,144 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1285 transitions. Word has length 22 [2021-10-13 19:50:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:46,145 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1285 transitions. [2021-10-13 19:50:46,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1285 transitions. [2021-10-13 19:50:46,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:46,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:46,147 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:46,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:46,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:46,363 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:46,364 INFO L82 PathProgramCache]: Analyzing trace with hash -504537127, now seen corresponding path program 2 times [2021-10-13 19:50:46,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:46,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995748123] [2021-10-13 19:50:46,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:50:46,366 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:46,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:46,367 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:46,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 19:50:46,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:50:46,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:46,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:50:46,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:46,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:46,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:46,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995748123] [2021-10-13 19:50:46,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995748123] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:46,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:46,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-13 19:50:46,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188359784] [2021-10-13 19:50:46,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:46,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:46,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:46,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:46,951 INFO L87 Difference]: Start difference. First operand 328 states and 1285 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:47,336 INFO L93 Difference]: Finished difference Result 1072 states and 4040 transitions. [2021-10-13 19:50:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:50:47,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2021-10-13 19:50:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:47,348 INFO L225 Difference]: With dead ends: 1072 [2021-10-13 19:50:47,348 INFO L226 Difference]: Without dead ends: 1072 [2021-10-13 19:50:47,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 163.8ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:50:47,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-10-13 19:50:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 490. [2021-10-13 19:50:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 4.368098159509202) internal successors, (2136), 489 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 2136 transitions. [2021-10-13 19:50:47,387 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 2136 transitions. Word has length 22 [2021-10-13 19:50:47,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:47,388 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 2136 transitions. [2021-10-13 19:50:47,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 2136 transitions. [2021-10-13 19:50:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 19:50:47,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:47,391 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:47,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:47,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:47,605 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:47,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:47,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2078561736, now seen corresponding path program 1 times [2021-10-13 19:50:47,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:47,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851295440] [2021-10-13 19:50:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:47,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:47,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:47,609 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:47,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 19:50:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:47,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:50:47,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:47,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:48,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:48,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851295440] [2021-10-13 19:50:48,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851295440] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:48,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:48,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-13 19:50:48,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211150397] [2021-10-13 19:50:48,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:48,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:48,167 INFO L87 Difference]: Start difference. First operand 490 states and 2136 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:48,537 INFO L93 Difference]: Finished difference Result 1330 states and 5276 transitions. [2021-10-13 19:50:48,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:50:48,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2021-10-13 19:50:48,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:48,550 INFO L225 Difference]: With dead ends: 1330 [2021-10-13 19:50:48,550 INFO L226 Difference]: Without dead ends: 1330 [2021-10-13 19:50:48,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 168.6ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:50:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-13 19:50:48,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 672. [2021-10-13 19:50:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 4.573770491803279) internal successors, (3069), 671 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 3069 transitions. [2021-10-13 19:50:48,593 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 3069 transitions. Word has length 22 [2021-10-13 19:50:48,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:48,594 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 3069 transitions. [2021-10-13 19:50:48,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:48,594 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 3069 transitions. [2021-10-13 19:50:48,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:50:48,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:48,598 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:48,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:48,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:48,811 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:48,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:48,812 INFO L82 PathProgramCache]: Analyzing trace with hash 331058400, now seen corresponding path program 1 times [2021-10-13 19:50:48,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:48,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687161776] [2021-10-13 19:50:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:48,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:48,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:48,814 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:48,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 19:50:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:48,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:50:48,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:49,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:49,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:49,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687161776] [2021-10-13 19:50:49,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687161776] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:49,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:49,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 19:50:49,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343081488] [2021-10-13 19:50:49,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:49,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:49,660 INFO L87 Difference]: Start difference. First operand 672 states and 3069 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:49,855 INFO L93 Difference]: Finished difference Result 884 states and 3825 transitions. [2021-10-13 19:50:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:50:49,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 23 [2021-10-13 19:50:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:49,865 INFO L225 Difference]: With dead ends: 884 [2021-10-13 19:50:49,865 INFO L226 Difference]: Without dead ends: 854 [2021-10-13 19:50:49,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:49,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-10-13 19:50:49,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 746. [2021-10-13 19:50:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 4.578523489932886) internal successors, (3411), 745 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 3411 transitions. [2021-10-13 19:50:49,903 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 3411 transitions. Word has length 23 [2021-10-13 19:50:49,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:49,903 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 3411 transitions. [2021-10-13 19:50:49,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 3411 transitions. [2021-10-13 19:50:49,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:50:49,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:49,908 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:49,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:50,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:50,121 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:50,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:50,122 INFO L82 PathProgramCache]: Analyzing trace with hash -336388294, now seen corresponding path program 2 times [2021-10-13 19:50:50,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:50,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878816802] [2021-10-13 19:50:50,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:50:50,125 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:50,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:50,126 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:50,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 19:50:50,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:50:50,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:50,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:50:50,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:50,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:51,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:51,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878816802] [2021-10-13 19:50:51,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878816802] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:51,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:51,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 19:50:51,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707716944] [2021-10-13 19:50:51,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:51,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:51,102 INFO L87 Difference]: Start difference. First operand 746 states and 3411 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:51,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:51,347 INFO L93 Difference]: Finished difference Result 978 states and 4232 transitions. [2021-10-13 19:50:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:50:51,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 23 [2021-10-13 19:50:51,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:51,359 INFO L225 Difference]: With dead ends: 978 [2021-10-13 19:50:51,359 INFO L226 Difference]: Without dead ends: 948 [2021-10-13 19:50:51,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2021-10-13 19:50:51,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 836. [2021-10-13 19:50:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 4.54251497005988) internal successors, (3793), 835 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 3793 transitions. [2021-10-13 19:50:51,400 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 3793 transitions. Word has length 23 [2021-10-13 19:50:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:51,400 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 3793 transitions. [2021-10-13 19:50:51,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 3793 transitions. [2021-10-13 19:50:51,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:50:51,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:51,405 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:51,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:51,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:51,621 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:51,621 INFO L82 PathProgramCache]: Analyzing trace with hash -951662070, now seen corresponding path program 1 times [2021-10-13 19:50:51,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:51,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213241990] [2021-10-13 19:50:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:50:51,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:51,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:51,623 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:51,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 19:50:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:50:51,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:50:51,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:52,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:52,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:52,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213241990] [2021-10-13 19:50:52,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213241990] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:52,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:52,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 19:50:52,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176293967] [2021-10-13 19:50:52,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:52,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:52,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:52,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:52,555 INFO L87 Difference]: Start difference. First operand 836 states and 3793 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:52,803 INFO L93 Difference]: Finished difference Result 1114 states and 4719 transitions. [2021-10-13 19:50:52,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:50:52,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 23 [2021-10-13 19:50:52,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:52,815 INFO L225 Difference]: With dead ends: 1114 [2021-10-13 19:50:52,815 INFO L226 Difference]: Without dead ends: 1064 [2021-10-13 19:50:52,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:52,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-10-13 19:50:52,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 924. [2021-10-13 19:50:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 4.524377031419285) internal successors, (4176), 923 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 4176 transitions. [2021-10-13 19:50:52,861 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 4176 transitions. Word has length 23 [2021-10-13 19:50:52,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:52,862 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 4176 transitions. [2021-10-13 19:50:52,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:52,863 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 4176 transitions. [2021-10-13 19:50:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:50:52,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:52,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:52,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:53,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:53,082 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:53,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:53,083 INFO L82 PathProgramCache]: Analyzing trace with hash -941635510, now seen corresponding path program 2 times [2021-10-13 19:50:53,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:53,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041508399] [2021-10-13 19:50:53,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:50:53,085 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:53,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:53,086 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:53,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 19:50:53,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:50:53,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:53,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:50:53,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:53,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:54,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:54,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041508399] [2021-10-13 19:50:54,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041508399] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:54,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:54,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 19:50:54,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059637555] [2021-10-13 19:50:54,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 19:50:54,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:54,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 19:50:54,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:54,157 INFO L87 Difference]: Start difference. First operand 924 states and 4176 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:54,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:54,423 INFO L93 Difference]: Finished difference Result 1218 states and 5155 transitions. [2021-10-13 19:50:54,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:50:54,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 23 [2021-10-13 19:50:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:54,436 INFO L225 Difference]: With dead ends: 1218 [2021-10-13 19:50:54,437 INFO L226 Difference]: Without dead ends: 1168 [2021-10-13 19:50:54,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:50:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-10-13 19:50:54,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1004. [2021-10-13 19:50:54,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 4.5114656031904286) internal successors, (4525), 1003 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 4525 transitions. [2021-10-13 19:50:54,482 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 4525 transitions. Word has length 23 [2021-10-13 19:50:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:54,482 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 4525 transitions. [2021-10-13 19:50:54,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 4525 transitions. [2021-10-13 19:50:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:50:54,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:54,487 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:54,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 19:50:54,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:54,701 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:54,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1471753348, now seen corresponding path program 3 times [2021-10-13 19:50:54,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:54,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718722014] [2021-10-13 19:50:54,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:50:54,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:54,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:54,705 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:54,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 19:50:55,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:50:55,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:55,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:50:55,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:55,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:55,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:55,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718722014] [2021-10-13 19:50:55,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718722014] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:55,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:55,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-13 19:50:55,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678856769] [2021-10-13 19:50:55,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:50:55,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:55,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:50:55,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:50:55,777 INFO L87 Difference]: Start difference. First operand 1004 states and 4525 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:57,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:50:57,392 INFO L93 Difference]: Finished difference Result 2022 states and 8965 transitions. [2021-10-13 19:50:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:50:57,393 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 24 [2021-10-13 19:50:57,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:50:57,412 INFO L225 Difference]: With dead ends: 2022 [2021-10-13 19:50:57,413 INFO L226 Difference]: Without dead ends: 1998 [2021-10-13 19:50:57,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 781.7ms TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:50:57,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-10-13 19:50:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1348. [2021-10-13 19:50:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 4.737193763919822) internal successors, (6381), 1347 states have internal predecessors, (6381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:57,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 6381 transitions. [2021-10-13 19:50:57,499 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 6381 transitions. Word has length 24 [2021-10-13 19:50:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:50:57,501 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 6381 transitions. [2021-10-13 19:50:57,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:50:57,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 6381 transitions. [2021-10-13 19:50:57,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:50:57,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:50:57,508 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:50:57,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-13 19:50:57,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:50:57,722 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:50:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:50:57,723 INFO L82 PathProgramCache]: Analyzing trace with hash -77969484, now seen corresponding path program 4 times [2021-10-13 19:50:57,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:50:57,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296655411] [2021-10-13 19:50:57,724 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:50:57,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:50:57,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:50:57,726 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:50:57,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 19:50:57,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:50:57,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:50:57,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:50:57,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:50:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:58,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:50:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:50:58,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:50:58,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296655411] [2021-10-13 19:50:58,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296655411] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:50:58,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:50:58,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-13 19:50:58,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381524455] [2021-10-13 19:50:58,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:50:58,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:50:58,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:50:58,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:50:58,631 INFO L87 Difference]: Start difference. First operand 1348 states and 6381 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:02,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:02,329 INFO L93 Difference]: Finished difference Result 2382 states and 10666 transitions. [2021-10-13 19:51:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:51:02,330 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 24 [2021-10-13 19:51:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:02,353 INFO L225 Difference]: With dead ends: 2382 [2021-10-13 19:51:02,354 INFO L226 Difference]: Without dead ends: 2356 [2021-10-13 19:51:02,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 934.9ms TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:51:02,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2021-10-13 19:51:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1466. [2021-10-13 19:51:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 4.7897610921501705) internal successors, (7017), 1465 states have internal predecessors, (7017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:02,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 7017 transitions. [2021-10-13 19:51:02,437 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 7017 transitions. Word has length 24 [2021-10-13 19:51:02,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:02,438 INFO L470 AbstractCegarLoop]: Abstraction has 1466 states and 7017 transitions. [2021-10-13 19:51:02,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:02,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 7017 transitions. [2021-10-13 19:51:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:02,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:02,445 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:02,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:02,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:02,658 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:02,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1097791868, now seen corresponding path program 5 times [2021-10-13 19:51:02,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:02,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404164896] [2021-10-13 19:51:02,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:51:02,660 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:02,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:02,661 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:02,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 19:51:02,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:51:02,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:02,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:51:02,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:03,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:03,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:03,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404164896] [2021-10-13 19:51:03,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404164896] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:03,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:03,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 19:51:03,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194601256] [2021-10-13 19:51:03,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:51:03,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:51:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:51:03,466 INFO L87 Difference]: Start difference. First operand 1466 states and 7017 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 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) [2021-10-13 19:51:04,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:04,540 INFO L93 Difference]: Finished difference Result 2736 states and 12264 transitions. [2021-10-13 19:51:04,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:51:04,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 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 24 [2021-10-13 19:51:04,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:04,555 INFO L225 Difference]: With dead ends: 2736 [2021-10-13 19:51:04,555 INFO L226 Difference]: Without dead ends: 2736 [2021-10-13 19:51:04,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 534.0ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:51:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-10-13 19:51:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 1600. [2021-10-13 19:51:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1599 states have (on average 4.894934333958724) internal successors, (7827), 1599 states have internal predecessors, (7827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 7827 transitions. [2021-10-13 19:51:04,639 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 7827 transitions. Word has length 24 [2021-10-13 19:51:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:04,639 INFO L470 AbstractCegarLoop]: Abstraction has 1600 states and 7827 transitions. [2021-10-13 19:51:04,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 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) [2021-10-13 19:51:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 7827 transitions. [2021-10-13 19:51:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:04,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:04,648 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:04,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-13 19:51:04,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:04,861 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:04,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:04,862 INFO L82 PathProgramCache]: Analyzing trace with hash -2039224982, now seen corresponding path program 6 times [2021-10-13 19:51:04,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:04,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633756752] [2021-10-13 19:51:04,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:51:04,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:04,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:04,865 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:04,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 19:51:05,225 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:51:05,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:05,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:51:05,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:05,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:05,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:05,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633756752] [2021-10-13 19:51:05,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633756752] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:05,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:05,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:05,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54195011] [2021-10-13 19:51:05,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:05,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:05,703 INFO L87 Difference]: Start difference. First operand 1600 states and 7827 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:06,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:06,652 INFO L93 Difference]: Finished difference Result 2572 states and 11787 transitions. [2021-10-13 19:51:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:51:06,653 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 24 [2021-10-13 19:51:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:06,669 INFO L225 Difference]: With dead ends: 2572 [2021-10-13 19:51:06,669 INFO L226 Difference]: Without dead ends: 2512 [2021-10-13 19:51:06,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 397.6ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:51:06,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2021-10-13 19:51:06,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 1804. [2021-10-13 19:51:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1803 states have (on average 5.002773155851359) internal successors, (9020), 1803 states have internal predecessors, (9020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 9020 transitions. [2021-10-13 19:51:06,794 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 9020 transitions. Word has length 24 [2021-10-13 19:51:06,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:06,794 INFO L470 AbstractCegarLoop]: Abstraction has 1804 states and 9020 transitions. [2021-10-13 19:51:06,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:06,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 9020 transitions. [2021-10-13 19:51:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:06,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:06,803 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:06,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:07,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:07,017 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:07,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:07,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1235919930, now seen corresponding path program 7 times [2021-10-13 19:51:07,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:07,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647817344] [2021-10-13 19:51:07,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:51:07,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:07,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:07,021 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:07,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 19:51:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:51:07,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:07,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:07,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:07,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:07,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647817344] [2021-10-13 19:51:07,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647817344] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:07,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:07,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-13 19:51:07,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794665211] [2021-10-13 19:51:07,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:51:07,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:07,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:51:07,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:51:07,963 INFO L87 Difference]: Start difference. First operand 1804 states and 9020 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:11,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:11,938 INFO L93 Difference]: Finished difference Result 4078 states and 18989 transitions. [2021-10-13 19:51:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:51:11,939 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 24 [2021-10-13 19:51:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:11,964 INFO L225 Difference]: With dead ends: 4078 [2021-10-13 19:51:11,964 INFO L226 Difference]: Without dead ends: 4078 [2021-10-13 19:51:11,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1432.8ms TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:51:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2021-10-13 19:51:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 2158. [2021-10-13 19:51:12,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 2157 states have (on average 5.172925359295317) internal successors, (11158), 2157 states have internal predecessors, (11158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 11158 transitions. [2021-10-13 19:51:12,096 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 11158 transitions. Word has length 24 [2021-10-13 19:51:12,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:12,096 INFO L470 AbstractCegarLoop]: Abstraction has 2158 states and 11158 transitions. [2021-10-13 19:51:12,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:12,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 11158 transitions. [2021-10-13 19:51:12,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:12,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:12,133 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:12,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-13 19:51:12,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:12,340 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:12,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:12,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1588295620, now seen corresponding path program 8 times [2021-10-13 19:51:12,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:12,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106175365] [2021-10-13 19:51:12,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:51:12,342 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:12,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:12,343 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:12,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 19:51:12,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:51:12,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:12,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:12,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:12,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:13,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:13,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106175365] [2021-10-13 19:51:13,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106175365] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:13,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:13,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-13 19:51:13,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848542281] [2021-10-13 19:51:13,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:51:13,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:13,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:51:13,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:51:13,402 INFO L87 Difference]: Start difference. First operand 2158 states and 11158 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:15,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:15,450 INFO L93 Difference]: Finished difference Result 4516 states and 21702 transitions. [2021-10-13 19:51:15,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:51:15,451 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 24 [2021-10-13 19:51:15,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:15,480 INFO L225 Difference]: With dead ends: 4516 [2021-10-13 19:51:15,480 INFO L226 Difference]: Without dead ends: 4516 [2021-10-13 19:51:15,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1182.3ms TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:51:15,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4516 states. [2021-10-13 19:51:15,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4516 to 2776. [2021-10-13 19:51:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2775 states have (on average 5.358198198198198) internal successors, (14869), 2775 states have internal predecessors, (14869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 14869 transitions. [2021-10-13 19:51:15,700 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 14869 transitions. Word has length 24 [2021-10-13 19:51:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:15,701 INFO L470 AbstractCegarLoop]: Abstraction has 2776 states and 14869 transitions. [2021-10-13 19:51:15,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 14869 transitions. [2021-10-13 19:51:15,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:15,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:15,716 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:15,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:15,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:15,929 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:15,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:15,930 INFO L82 PathProgramCache]: Analyzing trace with hash -914940883, now seen corresponding path program 3 times [2021-10-13 19:51:15,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:15,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794803636] [2021-10-13 19:51:15,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:51:15,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:15,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:15,932 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:15,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 19:51:16,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:51:16,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:16,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:51:16,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:16,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:17,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:17,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794803636] [2021-10-13 19:51:17,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794803636] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:17,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:17,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2021-10-13 19:51:17,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221769993] [2021-10-13 19:51:17,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:51:17,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:17,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:51:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:51:17,312 INFO L87 Difference]: Start difference. First operand 2776 states and 14869 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:20,015 INFO L93 Difference]: Finished difference Result 4854 states and 22970 transitions. [2021-10-13 19:51:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:51:20,016 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 24 [2021-10-13 19:51:20,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:20,059 INFO L225 Difference]: With dead ends: 4854 [2021-10-13 19:51:20,059 INFO L226 Difference]: Without dead ends: 4788 [2021-10-13 19:51:20,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1806.2ms TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-10-13 19:51:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2021-10-13 19:51:20,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 2878. [2021-10-13 19:51:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2878 states, 2877 states have (on average 5.346541536322558) internal successors, (15382), 2877 states have internal predecessors, (15382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 15382 transitions. [2021-10-13 19:51:20,265 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 15382 transitions. Word has length 24 [2021-10-13 19:51:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:20,265 INFO L470 AbstractCegarLoop]: Abstraction has 2878 states and 15382 transitions. [2021-10-13 19:51:20,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:20,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 15382 transitions. [2021-10-13 19:51:20,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:20,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:20,297 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:20,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-13 19:51:20,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:20,512 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:20,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:20,513 INFO L82 PathProgramCache]: Analyzing trace with hash -305310106, now seen corresponding path program 4 times [2021-10-13 19:51:20,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:20,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621808989] [2021-10-13 19:51:20,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:51:20,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:20,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:20,516 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:20,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 19:51:20,816 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:51:20,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:20,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:51:20,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:21,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:21,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:21,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621808989] [2021-10-13 19:51:21,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621808989] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:21,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:21,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:21,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332350075] [2021-10-13 19:51:21,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:21,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:21,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:21,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:21,390 INFO L87 Difference]: Start difference. First operand 2878 states and 15382 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:22,385 INFO L93 Difference]: Finished difference Result 6512 states and 30836 transitions. [2021-10-13 19:51:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:51:22,386 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 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 24 [2021-10-13 19:51:22,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:22,414 INFO L225 Difference]: With dead ends: 6512 [2021-10-13 19:51:22,414 INFO L226 Difference]: Without dead ends: 6490 [2021-10-13 19:51:22,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 415.1ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:51:22,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6490 states. [2021-10-13 19:51:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6490 to 3396. [2021-10-13 19:51:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 5.340500736377025) internal successors, (18131), 3395 states have internal predecessors, (18131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 18131 transitions. [2021-10-13 19:51:22,619 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 18131 transitions. Word has length 24 [2021-10-13 19:51:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:22,619 INFO L470 AbstractCegarLoop]: Abstraction has 3396 states and 18131 transitions. [2021-10-13 19:51:22,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:22,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 18131 transitions. [2021-10-13 19:51:22,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:22,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:22,635 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:22,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:22,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:22,849 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:22,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:22,849 INFO L82 PathProgramCache]: Analyzing trace with hash -22525784, now seen corresponding path program 5 times [2021-10-13 19:51:22,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:22,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315440325] [2021-10-13 19:51:22,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:51:22,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:22,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:22,852 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:22,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 19:51:23,188 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:51:23,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:23,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:51:23,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:23,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:23,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:23,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315440325] [2021-10-13 19:51:23,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315440325] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:23,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:23,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:23,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627354364] [2021-10-13 19:51:23,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:23,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:23,693 INFO L87 Difference]: Start difference. First operand 3396 states and 18131 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:26,796 INFO L93 Difference]: Finished difference Result 6802 states and 33034 transitions. [2021-10-13 19:51:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 19:51:26,796 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 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 24 [2021-10-13 19:51:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:26,862 INFO L225 Difference]: With dead ends: 6802 [2021-10-13 19:51:26,863 INFO L226 Difference]: Without dead ends: 6774 [2021-10-13 19:51:26,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 532.3ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:51:26,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6774 states. [2021-10-13 19:51:27,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6774 to 4138. [2021-10-13 19:51:27,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 4137 states have (on average 5.2279429538312785) internal successors, (21628), 4137 states have internal predecessors, (21628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 21628 transitions. [2021-10-13 19:51:27,036 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 21628 transitions. Word has length 24 [2021-10-13 19:51:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:27,037 INFO L470 AbstractCegarLoop]: Abstraction has 4138 states and 21628 transitions. [2021-10-13 19:51:27,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 21628 transitions. [2021-10-13 19:51:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:27,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:27,058 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:27,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:27,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:27,273 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:27,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:27,274 INFO L82 PathProgramCache]: Analyzing trace with hash -349636307, now seen corresponding path program 6 times [2021-10-13 19:51:27,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:27,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981987868] [2021-10-13 19:51:27,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:51:27,276 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:27,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:27,277 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:27,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 19:51:27,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:51:27,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:27,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:51:27,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:27,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:28,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:28,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981987868] [2021-10-13 19:51:28,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981987868] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:28,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:28,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:28,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342976311] [2021-10-13 19:51:28,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:28,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:28,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:28,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:28,350 INFO L87 Difference]: Start difference. First operand 4138 states and 21628 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:29,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:29,397 INFO L93 Difference]: Finished difference Result 7892 states and 37760 transitions. [2021-10-13 19:51:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:51:29,398 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 19:51:29,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:29,434 INFO L225 Difference]: With dead ends: 7892 [2021-10-13 19:51:29,434 INFO L226 Difference]: Without dead ends: 7870 [2021-10-13 19:51:29,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 504.8ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:51:29,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7870 states. [2021-10-13 19:51:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7870 to 4386. [2021-10-13 19:51:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4385 states have (on average 5.274800456100342) internal successors, (23130), 4385 states have internal predecessors, (23130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 23130 transitions. [2021-10-13 19:51:29,733 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 23130 transitions. Word has length 24 [2021-10-13 19:51:29,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:29,734 INFO L470 AbstractCegarLoop]: Abstraction has 4386 states and 23130 transitions. [2021-10-13 19:51:29,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:29,734 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 23130 transitions. [2021-10-13 19:51:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:51:29,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:29,752 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:29,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:29,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:29,966 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:29,966 INFO L82 PathProgramCache]: Analyzing trace with hash 319508071, now seen corresponding path program 7 times [2021-10-13 19:51:29,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:29,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131359301] [2021-10-13 19:51:29,967 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:51:29,967 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:29,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:29,968 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:29,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 19:51:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:51:30,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:51:30,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:30,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:30,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:30,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131359301] [2021-10-13 19:51:30,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131359301] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:30,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:30,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:51:30,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145967676] [2021-10-13 19:51:30,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:51:30,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:30,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:51:30,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:51:30,768 INFO L87 Difference]: Start difference. First operand 4386 states and 23130 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:32,151 INFO L93 Difference]: Finished difference Result 9236 states and 44693 transitions. [2021-10-13 19:51:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:51:32,152 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 19:51:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:32,204 INFO L225 Difference]: With dead ends: 9236 [2021-10-13 19:51:32,205 INFO L226 Difference]: Without dead ends: 9236 [2021-10-13 19:51:32,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 472.8ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:51:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9236 states. [2021-10-13 19:51:32,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9236 to 4722. [2021-10-13 19:51:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4722 states, 4721 states have (on average 5.356704088116924) internal successors, (25289), 4721 states have internal predecessors, (25289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4722 states to 4722 states and 25289 transitions. [2021-10-13 19:51:32,602 INFO L78 Accepts]: Start accepts. Automaton has 4722 states and 25289 transitions. Word has length 24 [2021-10-13 19:51:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:32,603 INFO L470 AbstractCegarLoop]: Abstraction has 4722 states and 25289 transitions. [2021-10-13 19:51:32,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4722 states and 25289 transitions. [2021-10-13 19:51:32,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:51:32,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:32,624 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:32,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-13 19:51:32,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:32,839 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:32,839 INFO L82 PathProgramCache]: Analyzing trace with hash 410613253, now seen corresponding path program 9 times [2021-10-13 19:51:32,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:32,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76232257] [2021-10-13 19:51:32,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:51:32,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:32,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:32,842 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:32,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 19:51:33,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:51:33,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:33,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:33,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:33,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:34,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:34,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76232257] [2021-10-13 19:51:34,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76232257] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:34,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:34,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:51:34,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763981245] [2021-10-13 19:51:34,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:51:34,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:34,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:51:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:51:34,147 INFO L87 Difference]: Start difference. First operand 4722 states and 25289 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:35,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:35,414 INFO L93 Difference]: Finished difference Result 5174 states and 26858 transitions. [2021-10-13 19:51:35,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:51:35,415 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:51:35,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:35,436 INFO L225 Difference]: With dead ends: 5174 [2021-10-13 19:51:35,437 INFO L226 Difference]: Without dead ends: 5144 [2021-10-13 19:51:35,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 304.0ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:51:35,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5144 states. [2021-10-13 19:51:35,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5144 to 4798. [2021-10-13 19:51:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4797 states have (on average 5.347508859703981) internal successors, (25652), 4797 states have internal predecessors, (25652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:35,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 25652 transitions. [2021-10-13 19:51:35,710 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 25652 transitions. Word has length 25 [2021-10-13 19:51:35,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:35,710 INFO L470 AbstractCegarLoop]: Abstraction has 4798 states and 25652 transitions. [2021-10-13 19:51:35,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 25652 transitions. [2021-10-13 19:51:35,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:51:35,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:35,730 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:35,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-13 19:51:35,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:35,944 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:35,945 INFO L82 PathProgramCache]: Analyzing trace with hash 527155525, now seen corresponding path program 10 times [2021-10-13 19:51:35,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:35,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845662725] [2021-10-13 19:51:35,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:51:35,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:35,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:35,948 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 19:51:35,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 19:51:36,298 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:51:36,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:36,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:36,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:38,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:39,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:39,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845662725] [2021-10-13 19:51:39,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845662725] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:39,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:39,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:51:39,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848245092] [2021-10-13 19:51:39,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:51:39,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:39,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:51:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-13 19:51:39,190 INFO L87 Difference]: Start difference. First operand 4798 states and 25652 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:44,535 INFO L93 Difference]: Finished difference Result 5442 states and 27921 transitions. [2021-10-13 19:51:44,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:51:44,535 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:51:44,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:44,558 INFO L225 Difference]: With dead ends: 5442 [2021-10-13 19:51:44,558 INFO L226 Difference]: Without dead ends: 5412 [2021-10-13 19:51:44,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6342.7ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-13 19:51:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5412 states. [2021-10-13 19:51:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5412 to 4962. [2021-10-13 19:51:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4962 states, 4961 states have (on average 5.341463414634147) internal successors, (26499), 4961 states have internal predecessors, (26499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4962 states to 4962 states and 26499 transitions. [2021-10-13 19:51:44,736 INFO L78 Accepts]: Start accepts. Automaton has 4962 states and 26499 transitions. Word has length 25 [2021-10-13 19:51:44,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:44,736 INFO L470 AbstractCegarLoop]: Abstraction has 4962 states and 26499 transitions. [2021-10-13 19:51:44,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4962 states and 26499 transitions. [2021-10-13 19:51:44,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:51:44,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:44,754 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:44,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:44,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 19:51:44,955 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:44,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:44,956 INFO L82 PathProgramCache]: Analyzing trace with hash 525223925, now seen corresponding path program 11 times [2021-10-13 19:51:44,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:44,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692954730] [2021-10-13 19:51:44,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:51:44,958 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:44,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:44,959 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) [2021-10-13 19:51:44,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-13 19:51:45,370 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:51:45,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:45,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:45,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:47,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:47,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:48,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:48,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692954730] [2021-10-13 19:51:48,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692954730] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:48,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:48,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:51:48,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360601960] [2021-10-13 19:51:48,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:51:48,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:51:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-13 19:51:48,369 INFO L87 Difference]: Start difference. First operand 4962 states and 26499 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:56,013 INFO L93 Difference]: Finished difference Result 5404 states and 27843 transitions. [2021-10-13 19:51:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:51:56,013 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:51:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:56,033 INFO L225 Difference]: With dead ends: 5404 [2021-10-13 19:51:56,034 INFO L226 Difference]: Without dead ends: 5374 [2021-10-13 19:51:56,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6335.2ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-13 19:51:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5374 states. [2021-10-13 19:51:56,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5374 to 4948. [2021-10-13 19:51:56,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4947 states have (on average 5.340408328279765) internal successors, (26419), 4947 states have internal predecessors, (26419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:56,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 26419 transitions. [2021-10-13 19:51:56,181 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 26419 transitions. Word has length 25 [2021-10-13 19:51:56,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:56,181 INFO L470 AbstractCegarLoop]: Abstraction has 4948 states and 26419 transitions. [2021-10-13 19:51:56,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:56,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 26419 transitions. [2021-10-13 19:51:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:51:56,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:56,201 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:56,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-13 19:51:56,401 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 [2021-10-13 19:51:56,402 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:56,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:56,403 INFO L82 PathProgramCache]: Analyzing trace with hash -2103478267, now seen corresponding path program 12 times [2021-10-13 19:51:56,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:56,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596489767] [2021-10-13 19:51:56,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:51:56,404 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:56,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:56,405 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) [2021-10-13 19:51:56,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-13 19:51:56,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:51:56,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:51:56,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:51:56,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:51:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:57,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:51:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:51:57,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:51:57,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596489767] [2021-10-13 19:51:57,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596489767] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:51:57,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:51:57,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:51:57,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631169593] [2021-10-13 19:51:57,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:51:57,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:51:57,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:51:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:51:57,983 INFO L87 Difference]: Start difference. First operand 4948 states and 26419 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:51:58,931 INFO L93 Difference]: Finished difference Result 5548 states and 28680 transitions. [2021-10-13 19:51:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:51:58,931 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:51:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:51:58,951 INFO L225 Difference]: With dead ends: 5548 [2021-10-13 19:51:58,952 INFO L226 Difference]: Without dead ends: 5518 [2021-10-13 19:51:58,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 365.4ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:51:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2021-10-13 19:51:59,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5202. [2021-10-13 19:51:59,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 5201 states have (on average 5.311863103249375) internal successors, (27627), 5201 states have internal predecessors, (27627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 27627 transitions. [2021-10-13 19:51:59,092 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 27627 transitions. Word has length 25 [2021-10-13 19:51:59,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:51:59,092 INFO L470 AbstractCegarLoop]: Abstraction has 5202 states and 27627 transitions. [2021-10-13 19:51:59,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:51:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 27627 transitions. [2021-10-13 19:51:59,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:51:59,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:51:59,108 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:51:59,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-13 19:51:59,308 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 [2021-10-13 19:51:59,309 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:51:59,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:51:59,310 INFO L82 PathProgramCache]: Analyzing trace with hash -747459678, now seen corresponding path program 13 times [2021-10-13 19:51:59,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:51:59,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291967117] [2021-10-13 19:51:59,311 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:51:59,311 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:51:59,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:51:59,313 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) [2021-10-13 19:51:59,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-13 19:51:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:51:59,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:51:59,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:00,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:00,930 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:00,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291967117] [2021-10-13 19:52:00,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291967117] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:00,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:00,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:52:00,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071104057] [2021-10-13 19:52:00,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:52:00,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:52:00,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:52:00,932 INFO L87 Difference]: Start difference. First operand 5202 states and 27627 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:07,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:07,285 INFO L93 Difference]: Finished difference Result 8930 states and 44948 transitions. [2021-10-13 19:52:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:52:07,287 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 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 25 [2021-10-13 19:52:07,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:07,322 INFO L225 Difference]: With dead ends: 8930 [2021-10-13 19:52:07,322 INFO L226 Difference]: Without dead ends: 8930 [2021-10-13 19:52:07,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2240.7ms TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:52:07,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8930 states. [2021-10-13 19:52:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8930 to 6242. [2021-10-13 19:52:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6242 states, 6241 states have (on average 5.437750360519147) internal successors, (33937), 6241 states have internal predecessors, (33937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6242 states to 6242 states and 33937 transitions. [2021-10-13 19:52:07,603 INFO L78 Accepts]: Start accepts. Automaton has 6242 states and 33937 transitions. Word has length 25 [2021-10-13 19:52:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:07,603 INFO L470 AbstractCegarLoop]: Abstraction has 6242 states and 33937 transitions. [2021-10-13 19:52:07,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 6242 states and 33937 transitions. [2021-10-13 19:52:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:07,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:07,624 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:07,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:07,824 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 [2021-10-13 19:52:07,825 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:07,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:07,826 INFO L82 PathProgramCache]: Analyzing trace with hash -395083988, now seen corresponding path program 14 times [2021-10-13 19:52:07,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:07,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432234704] [2021-10-13 19:52:07,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:52:07,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:07,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:07,829 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) [2021-10-13 19:52:07,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-13 19:52:08,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:52:08,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:08,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 19:52:08,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:08,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:08,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:08,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432234704] [2021-10-13 19:52:08,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432234704] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:08,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:08,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 19:52:08,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415029136] [2021-10-13 19:52:08,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:52:08,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:08,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:52:08,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:52:08,761 INFO L87 Difference]: Start difference. First operand 6242 states and 33937 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:11,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:11,786 INFO L93 Difference]: Finished difference Result 7830 states and 40639 transitions. [2021-10-13 19:52:11,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:11,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 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 25 [2021-10-13 19:52:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:11,832 INFO L225 Difference]: With dead ends: 7830 [2021-10-13 19:52:11,832 INFO L226 Difference]: Without dead ends: 7830 [2021-10-13 19:52:11,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 235.7ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:52:11,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7830 states. [2021-10-13 19:52:12,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7830 to 5560. [2021-10-13 19:52:12,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5559 states have (on average 5.395754632128081) internal successors, (29995), 5559 states have internal predecessors, (29995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 29995 transitions. [2021-10-13 19:52:12,085 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 29995 transitions. Word has length 25 [2021-10-13 19:52:12,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:12,085 INFO L470 AbstractCegarLoop]: Abstraction has 5560 states and 29995 transitions. [2021-10-13 19:52:12,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 29995 transitions. [2021-10-13 19:52:12,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:12,109 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:12,109 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:12,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:12,325 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 [2021-10-13 19:52:12,325 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:12,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:12,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2054059062, now seen corresponding path program 8 times [2021-10-13 19:52:12,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:12,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423924730] [2021-10-13 19:52:12,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:52:12,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:12,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:12,329 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) [2021-10-13 19:52:12,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-13 19:52:12,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:52:12,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:12,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:52:12,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:52:13,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:13,550 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:13,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423924730] [2021-10-13 19:52:13,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423924730] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:13,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:13,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-13 19:52:13,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533817283] [2021-10-13 19:52:13,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 19:52:13,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:13,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 19:52:13,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:52:13,552 INFO L87 Difference]: Start difference. First operand 5560 states and 29995 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:14,902 INFO L93 Difference]: Finished difference Result 9922 states and 50741 transitions. [2021-10-13 19:52:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:52:14,903 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 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 25 [2021-10-13 19:52:14,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:14,947 INFO L225 Difference]: With dead ends: 9922 [2021-10-13 19:52:14,947 INFO L226 Difference]: Without dead ends: 9842 [2021-10-13 19:52:14,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 723.5ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:52:14,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9842 states. [2021-10-13 19:52:15,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9842 to 6344. [2021-10-13 19:52:15,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6344 states, 6343 states have (on average 5.482421567081823) internal successors, (34775), 6343 states have internal predecessors, (34775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:15,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6344 states to 6344 states and 34775 transitions. [2021-10-13 19:52:15,295 INFO L78 Accepts]: Start accepts. Automaton has 6344 states and 34775 transitions. Word has length 25 [2021-10-13 19:52:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:15,295 INFO L470 AbstractCegarLoop]: Abstraction has 6344 states and 34775 transitions. [2021-10-13 19:52:15,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6344 states and 34775 transitions. [2021-10-13 19:52:15,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:15,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:15,322 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:15,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-13 19:52:15,536 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 [2021-10-13 19:52:15,537 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:15,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:15,538 INFO L82 PathProgramCache]: Analyzing trace with hash -65605207, now seen corresponding path program 9 times [2021-10-13 19:52:15,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:15,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480033733] [2021-10-13 19:52:15,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:52:15,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:15,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:15,540 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) [2021-10-13 19:52:15,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-13 19:52:16,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:52:16,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:16,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:16,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:18,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:19,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:19,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480033733] [2021-10-13 19:52:19,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480033733] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:19,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:19,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:19,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41586828] [2021-10-13 19:52:19,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:19,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:19,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:19,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-13 19:52:19,036 INFO L87 Difference]: Start difference. First operand 6344 states and 34775 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:24,116 INFO L93 Difference]: Finished difference Result 7306 states and 38066 transitions. [2021-10-13 19:52:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:24,117 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:52:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:24,144 INFO L225 Difference]: With dead ends: 7306 [2021-10-13 19:52:24,144 INFO L226 Difference]: Without dead ends: 7256 [2021-10-13 19:52:24,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6349.7ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-13 19:52:24,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7256 states. [2021-10-13 19:52:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7256 to 6480. [2021-10-13 19:52:24,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6480 states, 6479 states have (on average 5.482327519678963) internal successors, (35520), 6479 states have internal predecessors, (35520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:24,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6480 states to 6480 states and 35520 transitions. [2021-10-13 19:52:24,497 INFO L78 Accepts]: Start accepts. Automaton has 6480 states and 35520 transitions. Word has length 25 [2021-10-13 19:52:24,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:24,497 INFO L470 AbstractCegarLoop]: Abstraction has 6480 states and 35520 transitions. [2021-10-13 19:52:24,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:24,498 INFO L276 IsEmpty]: Start isEmpty. Operand 6480 states and 35520 transitions. [2021-10-13 19:52:24,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:24,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:24,523 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:24,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:24,737 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 [2021-10-13 19:52:24,738 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:24,739 INFO L82 PathProgramCache]: Analyzing trace with hash -292454895, now seen corresponding path program 10 times [2021-10-13 19:52:24,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:24,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84248847] [2021-10-13 19:52:24,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:52:24,740 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:24,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:24,741 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) [2021-10-13 19:52:24,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-13 19:52:25,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:52:25,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:25,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:25,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:27,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:28,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:28,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84248847] [2021-10-13 19:52:28,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84248847] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:28,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:28,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:28,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911775492] [2021-10-13 19:52:28,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:28,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:28,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-13 19:52:28,084 INFO L87 Difference]: Start difference. First operand 6480 states and 35520 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:34,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:34,104 INFO L93 Difference]: Finished difference Result 7218 states and 37795 transitions. [2021-10-13 19:52:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:34,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:52:34,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:34,135 INFO L225 Difference]: With dead ends: 7218 [2021-10-13 19:52:34,135 INFO L226 Difference]: Without dead ends: 7154 [2021-10-13 19:52:34,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6299.5ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-13 19:52:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7154 states. [2021-10-13 19:52:34,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7154 to 6436. [2021-10-13 19:52:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6436 states, 6435 states have (on average 5.4787878787878785) internal successors, (35256), 6435 states have internal predecessors, (35256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:34,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6436 states to 6436 states and 35256 transitions. [2021-10-13 19:52:34,331 INFO L78 Accepts]: Start accepts. Automaton has 6436 states and 35256 transitions. Word has length 25 [2021-10-13 19:52:34,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:34,331 INFO L470 AbstractCegarLoop]: Abstraction has 6436 states and 35256 transitions. [2021-10-13 19:52:34,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:34,332 INFO L276 IsEmpty]: Start isEmpty. Operand 6436 states and 35256 transitions. [2021-10-13 19:52:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:34,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:34,351 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:34,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:34,551 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 [2021-10-13 19:52:34,551 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:34,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1113046084, now seen corresponding path program 11 times [2021-10-13 19:52:34,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:34,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957916555] [2021-10-13 19:52:34,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:52:34,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:34,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:34,555 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) [2021-10-13 19:52:34,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-13 19:52:35,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:52:35,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:35,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:52:35,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:35,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:35,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:35,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957916555] [2021-10-13 19:52:35,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957916555] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:35,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:35,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-13 19:52:35,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966616589] [2021-10-13 19:52:35,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:35,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:35,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:35,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:35,670 INFO L87 Difference]: Start difference. First operand 6436 states and 35256 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:37,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:37,569 INFO L93 Difference]: Finished difference Result 17226 states and 85350 transitions. [2021-10-13 19:52:37,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:52:37,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 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 25 [2021-10-13 19:52:37,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:37,649 INFO L225 Difference]: With dead ends: 17226 [2021-10-13 19:52:37,649 INFO L226 Difference]: Without dead ends: 17226 [2021-10-13 19:52:37,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 770.2ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:52:37,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17226 states. [2021-10-13 19:52:37,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17226 to 7276. [2021-10-13 19:52:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7276 states, 7275 states have (on average 5.648659793814433) internal successors, (41094), 7275 states have internal predecessors, (41094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 41094 transitions. [2021-10-13 19:52:37,972 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 41094 transitions. Word has length 25 [2021-10-13 19:52:37,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:37,973 INFO L470 AbstractCegarLoop]: Abstraction has 7276 states and 41094 transitions. [2021-10-13 19:52:37,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 41094 transitions. [2021-10-13 19:52:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:37,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:37,993 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:38,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:38,194 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 [2021-10-13 19:52:38,194 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:38,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:38,195 INFO L82 PathProgramCache]: Analyzing trace with hash -258747379, now seen corresponding path program 12 times [2021-10-13 19:52:38,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:38,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852977421] [2021-10-13 19:52:38,196 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:52:38,197 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:38,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:38,198 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) [2021-10-13 19:52:38,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-13 19:52:38,758 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 19:52:38,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:38,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:38,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:39,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:39,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:39,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852977421] [2021-10-13 19:52:39,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852977421] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:39,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:39,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:39,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908651166] [2021-10-13 19:52:39,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:39,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:39,648 INFO L87 Difference]: Start difference. First operand 7276 states and 41094 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:43,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:43,088 INFO L93 Difference]: Finished difference Result 8006 states and 43625 transitions. [2021-10-13 19:52:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:43,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:52:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:43,123 INFO L225 Difference]: With dead ends: 8006 [2021-10-13 19:52:43,123 INFO L226 Difference]: Without dead ends: 7956 [2021-10-13 19:52:43,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 322.1ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:52:43,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7956 states. [2021-10-13 19:52:43,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7956 to 7404. [2021-10-13 19:52:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7404 states, 7403 states have (on average 5.635012832635418) internal successors, (41716), 7403 states have internal predecessors, (41716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7404 states to 7404 states and 41716 transitions. [2021-10-13 19:52:43,430 INFO L78 Accepts]: Start accepts. Automaton has 7404 states and 41716 transitions. Word has length 25 [2021-10-13 19:52:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:43,431 INFO L470 AbstractCegarLoop]: Abstraction has 7404 states and 41716 transitions. [2021-10-13 19:52:43,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 7404 states and 41716 transitions. [2021-10-13 19:52:43,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:43,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:43,453 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:43,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:43,667 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 [2021-10-13 19:52:43,667 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:43,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:43,668 INFO L82 PathProgramCache]: Analyzing trace with hash -358620475, now seen corresponding path program 1 times [2021-10-13 19:52:43,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:43,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474026201] [2021-10-13 19:52:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:52:43,670 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:43,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:43,671 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) [2021-10-13 19:52:43,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-13 19:52:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:52:44,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:44,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:44,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:45,332 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:45,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474026201] [2021-10-13 19:52:45,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474026201] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:45,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:45,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:45,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724224502] [2021-10-13 19:52:45,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:45,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:45,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:45,335 INFO L87 Difference]: Start difference. First operand 7404 states and 41716 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:47,132 INFO L93 Difference]: Finished difference Result 8634 states and 46867 transitions. [2021-10-13 19:52:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:47,132 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:52:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:47,171 INFO L225 Difference]: With dead ends: 8634 [2021-10-13 19:52:47,172 INFO L226 Difference]: Without dead ends: 8548 [2021-10-13 19:52:47,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 396.7ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8548 states. [2021-10-13 19:52:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8548 to 7748. [2021-10-13 19:52:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7748 states, 7747 states have (on average 5.653930553762747) internal successors, (43801), 7747 states have internal predecessors, (43801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 43801 transitions. [2021-10-13 19:52:47,577 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 43801 transitions. Word has length 25 [2021-10-13 19:52:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:47,578 INFO L470 AbstractCegarLoop]: Abstraction has 7748 states and 43801 transitions. [2021-10-13 19:52:47,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:47,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 43801 transitions. [2021-10-13 19:52:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:47,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:47,603 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:47,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:47,816 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 [2021-10-13 19:52:47,816 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:47,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:47,817 INFO L82 PathProgramCache]: Analyzing trace with hash -348593915, now seen corresponding path program 2 times [2021-10-13 19:52:47,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:47,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564715063] [2021-10-13 19:52:47,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:52:47,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:47,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:47,819 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) [2021-10-13 19:52:47,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-13 19:52:48,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:52:48,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:48,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:48,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:49,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:49,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:49,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564715063] [2021-10-13 19:52:49,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564715063] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:49,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:49,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:49,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237123258] [2021-10-13 19:52:49,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:49,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:49,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:49,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:49,455 INFO L87 Difference]: Start difference. First operand 7748 states and 43801 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:50,202 INFO L93 Difference]: Finished difference Result 9066 states and 49224 transitions. [2021-10-13 19:52:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:52:50,203 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:52:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:50,239 INFO L225 Difference]: With dead ends: 9066 [2021-10-13 19:52:50,239 INFO L226 Difference]: Without dead ends: 8980 [2021-10-13 19:52:50,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 287.0ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8980 states. [2021-10-13 19:52:50,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8980 to 8042. [2021-10-13 19:52:50,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8042 states, 8041 states have (on average 5.665588857107325) internal successors, (45557), 8041 states have internal predecessors, (45557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8042 states to 8042 states and 45557 transitions. [2021-10-13 19:52:50,669 INFO L78 Accepts]: Start accepts. Automaton has 8042 states and 45557 transitions. Word has length 25 [2021-10-13 19:52:50,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:50,670 INFO L470 AbstractCegarLoop]: Abstraction has 8042 states and 45557 transitions. [2021-10-13 19:52:50,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:50,670 INFO L276 IsEmpty]: Start isEmpty. Operand 8042 states and 45557 transitions. [2021-10-13 19:52:50,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:50,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:50,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:50,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-13 19:52:50,897 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 [2021-10-13 19:52:50,898 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:50,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:50,899 INFO L82 PathProgramCache]: Analyzing trace with hash 70082437, now seen corresponding path program 3 times [2021-10-13 19:52:50,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:50,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874497811] [2021-10-13 19:52:50,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:52:50,900 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:50,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:50,902 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) [2021-10-13 19:52:50,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-13 19:52:51,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:52:51,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:51,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:51,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:52,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:52,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:52,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874497811] [2021-10-13 19:52:52,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874497811] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:52,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:52,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:52,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654086931] [2021-10-13 19:52:52,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:52,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:52,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:52,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:52,594 INFO L87 Difference]: Start difference. First operand 8042 states and 45557 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:53,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:53,254 INFO L93 Difference]: Finished difference Result 9594 states and 52200 transitions. [2021-10-13 19:52:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:52:53,255 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:52:53,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:53,296 INFO L225 Difference]: With dead ends: 9594 [2021-10-13 19:52:53,296 INFO L226 Difference]: Without dead ends: 9500 [2021-10-13 19:52:53,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 276.9ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9500 states. [2021-10-13 19:52:53,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9500 to 8270. [2021-10-13 19:52:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8270 states, 8269 states have (on average 5.691498367396299) internal successors, (47063), 8269 states have internal predecessors, (47063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8270 states to 8270 states and 47063 transitions. [2021-10-13 19:52:53,682 INFO L78 Accepts]: Start accepts. Automaton has 8270 states and 47063 transitions. Word has length 25 [2021-10-13 19:52:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:53,682 INFO L470 AbstractCegarLoop]: Abstraction has 8270 states and 47063 transitions. [2021-10-13 19:52:53,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand 8270 states and 47063 transitions. [2021-10-13 19:52:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:53,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:53,704 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:53,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:53,906 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 [2021-10-13 19:52:53,906 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:53,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:53,908 INFO L82 PathProgramCache]: Analyzing trace with hash -665458875, now seen corresponding path program 4 times [2021-10-13 19:52:53,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:53,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208684302] [2021-10-13 19:52:53,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:52:53,908 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:53,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:53,909 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) [2021-10-13 19:52:53,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-13 19:52:54,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:52:54,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:54,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:54,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:55,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:55,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:55,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:55,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208684302] [2021-10-13 19:52:55,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208684302] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:55,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:55,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:55,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021646825] [2021-10-13 19:52:55,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:55,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:55,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:55,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:55,530 INFO L87 Difference]: Start difference. First operand 8270 states and 47063 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:56,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:52:56,169 INFO L93 Difference]: Finished difference Result 9056 states and 50300 transitions. [2021-10-13 19:52:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:52:56,170 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:52:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:52:56,206 INFO L225 Difference]: With dead ends: 9056 [2021-10-13 19:52:56,206 INFO L226 Difference]: Without dead ends: 8954 [2021-10-13 19:52:56,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 310.6ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:56,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8954 states. [2021-10-13 19:52:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8954 to 8558. [2021-10-13 19:52:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8558 states, 8557 states have (on average 5.689727708308987) internal successors, (48687), 8557 states have internal predecessors, (48687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:56,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 48687 transitions. [2021-10-13 19:52:56,584 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 48687 transitions. Word has length 25 [2021-10-13 19:52:56,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:52:56,584 INFO L470 AbstractCegarLoop]: Abstraction has 8558 states and 48687 transitions. [2021-10-13 19:52:56,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:52:56,585 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 48687 transitions. [2021-10-13 19:52:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:52:56,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:52:56,608 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:52:56,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-13 19:52:56,808 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 [2021-10-13 19:52:56,809 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:52:56,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:52:56,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1465809093, now seen corresponding path program 5 times [2021-10-13 19:52:56,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:52:56,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672650295] [2021-10-13 19:52:56,811 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:52:56,811 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:52:56,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:52:56,813 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) [2021-10-13 19:52:56,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-13 19:52:57,409 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:52:57,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:52:57,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:52:57,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:52:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:57,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:52:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:52:58,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:52:58,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672650295] [2021-10-13 19:52:58,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672650295] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:52:58,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:52:58,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:52:58,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952350507] [2021-10-13 19:52:58,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:52:58,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:52:58,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:52:58,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:52:58,350 INFO L87 Difference]: Start difference. First operand 8558 states and 48687 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:01,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:01,007 INFO L93 Difference]: Finished difference Result 10198 states and 55511 transitions. [2021-10-13 19:53:01,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:53:01,008 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:01,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:01,054 INFO L225 Difference]: With dead ends: 10198 [2021-10-13 19:53:01,054 INFO L226 Difference]: Without dead ends: 10092 [2021-10-13 19:53:01,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 284.6ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10092 states. [2021-10-13 19:53:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10092 to 8762. [2021-10-13 19:53:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8762 states, 8761 states have (on average 5.706197922611574) internal successors, (49992), 8761 states have internal predecessors, (49992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8762 states to 8762 states and 49992 transitions. [2021-10-13 19:53:01,465 INFO L78 Accepts]: Start accepts. Automaton has 8762 states and 49992 transitions. Word has length 25 [2021-10-13 19:53:01,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:01,466 INFO L470 AbstractCegarLoop]: Abstraction has 8762 states and 49992 transitions. [2021-10-13 19:53:01,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:01,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8762 states and 49992 transitions. [2021-10-13 19:53:01,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:01,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:01,490 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:01,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-13 19:53:01,690 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 [2021-10-13 19:53:01,691 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash 380130693, now seen corresponding path program 6 times [2021-10-13 19:53:01,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:01,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907096033] [2021-10-13 19:53:01,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:53:01,693 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:01,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:01,698 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) [2021-10-13 19:53:01,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-13 19:53:02,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 19:53:02,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:02,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:02,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:03,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:03,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:03,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907096033] [2021-10-13 19:53:03,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907096033] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:03,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:03,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:03,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345659640] [2021-10-13 19:53:03,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:03,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:03,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:03,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:03,367 INFO L87 Difference]: Start difference. First operand 8762 states and 49992 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:04,174 INFO L93 Difference]: Finished difference Result 9630 states and 53536 transitions. [2021-10-13 19:53:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:53:04,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:04,220 INFO L225 Difference]: With dead ends: 9630 [2021-10-13 19:53:04,220 INFO L226 Difference]: Without dead ends: 9538 [2021-10-13 19:53:04,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 285.9ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:04,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9538 states. [2021-10-13 19:53:04,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9538 to 8996. [2021-10-13 19:53:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8996 states, 8995 states have (on average 5.7058365758754865) internal successors, (51324), 8995 states have internal predecessors, (51324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:04,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8996 states to 8996 states and 51324 transitions. [2021-10-13 19:53:04,649 INFO L78 Accepts]: Start accepts. Automaton has 8996 states and 51324 transitions. Word has length 25 [2021-10-13 19:53:04,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:04,650 INFO L470 AbstractCegarLoop]: Abstraction has 8996 states and 51324 transitions. [2021-10-13 19:53:04,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 8996 states and 51324 transitions. [2021-10-13 19:53:04,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:04,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:04,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:04,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:04,881 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 [2021-10-13 19:53:04,881 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:04,882 INFO L82 PathProgramCache]: Analyzing trace with hash -575490017, now seen corresponding path program 7 times [2021-10-13 19:53:04,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:04,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341538043] [2021-10-13 19:53:04,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:53:04,884 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:04,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:04,885 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) [2021-10-13 19:53:04,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-13 19:53:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:53:05,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:05,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:06,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:06,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:06,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341538043] [2021-10-13 19:53:06,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341538043] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:06,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:06,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:06,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152844864] [2021-10-13 19:53:06,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:06,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:06,670 INFO L87 Difference]: Start difference. First operand 8996 states and 51324 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:07,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:07,438 INFO L93 Difference]: Finished difference Result 9988 states and 55278 transitions. [2021-10-13 19:53:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:53:07,438 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:07,478 INFO L225 Difference]: With dead ends: 9988 [2021-10-13 19:53:07,478 INFO L226 Difference]: Without dead ends: 9902 [2021-10-13 19:53:07,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 289.8ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:07,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9902 states. [2021-10-13 19:53:07,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9902 to 9132. [2021-10-13 19:53:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9132 states, 9131 states have (on average 5.717884130982368) internal successors, (52210), 9131 states have internal predecessors, (52210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9132 states to 9132 states and 52210 transitions. [2021-10-13 19:53:07,749 INFO L78 Accepts]: Start accepts. Automaton has 9132 states and 52210 transitions. Word has length 25 [2021-10-13 19:53:07,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:07,750 INFO L470 AbstractCegarLoop]: Abstraction has 9132 states and 52210 transitions. [2021-10-13 19:53:07,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:07,750 INFO L276 IsEmpty]: Start isEmpty. Operand 9132 states and 52210 transitions. [2021-10-13 19:53:07,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:07,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:07,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:07,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:07,976 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 [2021-10-13 19:53:07,977 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:07,977 INFO L82 PathProgramCache]: Analyzing trace with hash -565463457, now seen corresponding path program 8 times [2021-10-13 19:53:07,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:07,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730809909] [2021-10-13 19:53:07,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:53:07,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:07,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:07,980 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) [2021-10-13 19:53:07,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-13 19:53:08,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:53:08,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:08,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:08,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:09,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:10,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:10,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730809909] [2021-10-13 19:53:10,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730809909] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:10,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:10,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:10,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348188544] [2021-10-13 19:53:10,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:10,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:10,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:10,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:10,012 INFO L87 Difference]: Start difference. First operand 9132 states and 52210 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:10,900 INFO L93 Difference]: Finished difference Result 10220 states and 56489 transitions. [2021-10-13 19:53:10,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:53:10,900 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:10,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:10,944 INFO L225 Difference]: With dead ends: 10220 [2021-10-13 19:53:10,944 INFO L226 Difference]: Without dead ends: 10134 [2021-10-13 19:53:10,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 355.9ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:10,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10134 states. [2021-10-13 19:53:11,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10134 to 9236. [2021-10-13 19:53:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9236 states, 9235 states have (on average 5.732755820249053) internal successors, (52942), 9235 states have internal predecessors, (52942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:11,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 52942 transitions. [2021-10-13 19:53:11,308 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 52942 transitions. Word has length 25 [2021-10-13 19:53:11,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:11,309 INFO L470 AbstractCegarLoop]: Abstraction has 9236 states and 52942 transitions. [2021-10-13 19:53:11,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 52942 transitions. [2021-10-13 19:53:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:11,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:11,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:11,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:11,534 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 [2021-10-13 19:53:11,535 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:11,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:11,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1969494405, now seen corresponding path program 9 times [2021-10-13 19:53:11,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:11,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356515501] [2021-10-13 19:53:11,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:53:11,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:11,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:11,538 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) [2021-10-13 19:53:11,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-13 19:53:12,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:53:12,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:12,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:12,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:12,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:13,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:13,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356515501] [2021-10-13 19:53:13,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356515501] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:13,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:13,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:13,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233363223] [2021-10-13 19:53:13,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:13,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:13,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:13,458 INFO L87 Difference]: Start difference. First operand 9236 states and 52942 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:14,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:14,426 INFO L93 Difference]: Finished difference Result 10566 states and 58449 transitions. [2021-10-13 19:53:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:53:14,427 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:14,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:14,489 INFO L225 Difference]: With dead ends: 10566 [2021-10-13 19:53:14,490 INFO L226 Difference]: Without dead ends: 10472 [2021-10-13 19:53:14,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 409.2ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:14,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10472 states. [2021-10-13 19:53:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10472 to 9414. [2021-10-13 19:53:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9414 states, 9413 states have (on average 5.746627005205567) internal successors, (54093), 9413 states have internal predecessors, (54093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9414 states to 9414 states and 54093 transitions. [2021-10-13 19:53:14,931 INFO L78 Accepts]: Start accepts. Automaton has 9414 states and 54093 transitions. Word has length 25 [2021-10-13 19:53:14,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:14,932 INFO L470 AbstractCegarLoop]: Abstraction has 9414 states and 54093 transitions. [2021-10-13 19:53:14,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:14,932 INFO L276 IsEmpty]: Start isEmpty. Operand 9414 states and 54093 transitions. [2021-10-13 19:53:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:14,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:14,958 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:14,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-10-13 19:53:15,159 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 [2021-10-13 19:53:15,159 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:15,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:15,160 INFO L82 PathProgramCache]: Analyzing trace with hash -2136701371, now seen corresponding path program 10 times [2021-10-13 19:53:15,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:15,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953898183] [2021-10-13 19:53:15,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:53:15,162 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:15,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:15,163 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) [2021-10-13 19:53:15,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-13 19:53:15,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:53:15,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:15,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:15,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:16,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:16,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:16,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953898183] [2021-10-13 19:53:16,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953898183] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:16,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:16,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:16,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753691413] [2021-10-13 19:53:16,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:16,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:16,884 INFO L87 Difference]: Start difference. First operand 9414 states and 54093 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:17,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:17,299 INFO L93 Difference]: Finished difference Result 10112 states and 56906 transitions. [2021-10-13 19:53:17,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:53:17,299 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:17,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:17,344 INFO L225 Difference]: With dead ends: 10112 [2021-10-13 19:53:17,344 INFO L226 Difference]: Without dead ends: 9994 [2021-10-13 19:53:17,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 275.4ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9994 states. [2021-10-13 19:53:17,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9994 to 9662. [2021-10-13 19:53:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9662 states, 9661 states have (on average 5.735948659559051) internal successors, (55415), 9661 states have internal predecessors, (55415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:17,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9662 states to 9662 states and 55415 transitions. [2021-10-13 19:53:17,633 INFO L78 Accepts]: Start accepts. Automaton has 9662 states and 55415 transitions. Word has length 25 [2021-10-13 19:53:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:17,633 INFO L470 AbstractCegarLoop]: Abstraction has 9662 states and 55415 transitions. [2021-10-13 19:53:17,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:17,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9662 states and 55415 transitions. [2021-10-13 19:53:17,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:17,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:17,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:17,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:17,973 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 [2021-10-13 19:53:17,974 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:17,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1970873659, now seen corresponding path program 11 times [2021-10-13 19:53:17,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:17,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853397083] [2021-10-13 19:53:17,975 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:53:17,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:17,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:17,977 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) [2021-10-13 19:53:17,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-13 19:53:18,681 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:53:18,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:18,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:18,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:19,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:19,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:19,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853397083] [2021-10-13 19:53:19,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853397083] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:19,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:19,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:19,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938465718] [2021-10-13 19:53:19,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:19,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:19,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:19,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:19,609 INFO L87 Difference]: Start difference. First operand 9662 states and 55415 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:20,227 INFO L93 Difference]: Finished difference Result 11042 states and 60944 transitions. [2021-10-13 19:53:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:53:20,227 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:20,284 INFO L225 Difference]: With dead ends: 11042 [2021-10-13 19:53:20,284 INFO L226 Difference]: Without dead ends: 10936 [2021-10-13 19:53:20,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 290.6ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10936 states. [2021-10-13 19:53:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10936 to 9804. [2021-10-13 19:53:20,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9804 states, 9803 states have (on average 5.744976027746608) internal successors, (56318), 9803 states have internal predecessors, (56318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9804 states to 9804 states and 56318 transitions. [2021-10-13 19:53:20,734 INFO L78 Accepts]: Start accepts. Automaton has 9804 states and 56318 transitions. Word has length 25 [2021-10-13 19:53:20,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:20,734 INFO L470 AbstractCegarLoop]: Abstraction has 9804 states and 56318 transitions. [2021-10-13 19:53:20,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:20,735 INFO L276 IsEmpty]: Start isEmpty. Operand 9804 states and 56318 transitions. [2021-10-13 19:53:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:20,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:20,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:20,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-10-13 19:53:20,967 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 [2021-10-13 19:53:20,968 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:20,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1166199173, now seen corresponding path program 12 times [2021-10-13 19:53:20,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:20,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078593314] [2021-10-13 19:53:20,970 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:53:20,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:20,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:20,972 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) [2021-10-13 19:53:20,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-13 19:53:21,961 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-13 19:53:21,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:21,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:21,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:22,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:23,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:23,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078593314] [2021-10-13 19:53:23,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078593314] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:23,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:23,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:23,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151298569] [2021-10-13 19:53:23,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:23,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:23,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:23,017 INFO L87 Difference]: Start difference. First operand 9804 states and 56318 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:23,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:23,711 INFO L93 Difference]: Finished difference Result 10560 states and 59324 transitions. [2021-10-13 19:53:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 19:53:23,712 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:23,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:23,758 INFO L225 Difference]: With dead ends: 10560 [2021-10-13 19:53:23,758 INFO L226 Difference]: Without dead ends: 10454 [2021-10-13 19:53:23,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 280.7ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:23,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10454 states. [2021-10-13 19:53:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10454 to 9996. [2021-10-13 19:53:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9996 states, 9995 states have (on average 5.739069534767384) internal successors, (57362), 9995 states have internal predecessors, (57362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9996 states to 9996 states and 57362 transitions. [2021-10-13 19:53:24,219 INFO L78 Accepts]: Start accepts. Automaton has 9996 states and 57362 transitions. Word has length 25 [2021-10-13 19:53:24,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:24,219 INFO L470 AbstractCegarLoop]: Abstraction has 9996 states and 57362 transitions. [2021-10-13 19:53:24,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand 9996 states and 57362 transitions. [2021-10-13 19:53:24,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:24,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:24,250 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:24,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:24,450 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 [2021-10-13 19:53:24,451 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:24,452 INFO L82 PathProgramCache]: Analyzing trace with hash 653062405, now seen corresponding path program 13 times [2021-10-13 19:53:24,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:24,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149793862] [2021-10-13 19:53:24,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:53:24,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:24,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:24,454 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) [2021-10-13 19:53:24,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-13 19:53:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:53:25,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:25,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:25,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:26,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:26,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149793862] [2021-10-13 19:53:26,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149793862] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:26,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:26,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:26,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721462400] [2021-10-13 19:53:26,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:26,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:26,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:26,157 INFO L87 Difference]: Start difference. First operand 9996 states and 57362 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:28,996 INFO L93 Difference]: Finished difference Result 11946 states and 66025 transitions. [2021-10-13 19:53:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:53:28,997 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:29,061 INFO L225 Difference]: With dead ends: 11946 [2021-10-13 19:53:29,061 INFO L226 Difference]: Without dead ends: 11838 [2021-10-13 19:53:29,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 293.4ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11838 states. [2021-10-13 19:53:29,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11838 to 10178. [2021-10-13 19:53:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10178 states, 10177 states have (on average 5.763781074972978) internal successors, (58658), 10177 states have internal predecessors, (58658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10178 states to 10178 states and 58658 transitions. [2021-10-13 19:53:29,672 INFO L78 Accepts]: Start accepts. Automaton has 10178 states and 58658 transitions. Word has length 25 [2021-10-13 19:53:29,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:29,672 INFO L470 AbstractCegarLoop]: Abstraction has 10178 states and 58658 transitions. [2021-10-13 19:53:29,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 10178 states and 58658 transitions. [2021-10-13 19:53:29,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:29,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:29,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:29,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-13 19:53:29,912 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 [2021-10-13 19:53:29,913 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:29,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1824903941, now seen corresponding path program 14 times [2021-10-13 19:53:29,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:29,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449439385] [2021-10-13 19:53:29,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:53:29,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:29,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:29,917 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) [2021-10-13 19:53:29,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-13 19:53:31,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:53:31,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:31,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:31,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:31,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:32,168 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:32,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449439385] [2021-10-13 19:53:32,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449439385] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:32,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:32,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:32,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729193477] [2021-10-13 19:53:32,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:32,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:32,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:32,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:32,169 INFO L87 Difference]: Start difference. First operand 10178 states and 58658 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:33,034 INFO L93 Difference]: Finished difference Result 11774 states and 65388 transitions. [2021-10-13 19:53:33,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:53:33,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:33,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:33,083 INFO L225 Difference]: With dead ends: 11774 [2021-10-13 19:53:33,083 INFO L226 Difference]: Without dead ends: 11648 [2021-10-13 19:53:33,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 283.1ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11648 states. [2021-10-13 19:53:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11648 to 10242. [2021-10-13 19:53:33,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10242 states, 10241 states have (on average 5.7836148813592425) internal successors, (59230), 10241 states have internal predecessors, (59230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:33,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 59230 transitions. [2021-10-13 19:53:33,547 INFO L78 Accepts]: Start accepts. Automaton has 10242 states and 59230 transitions. Word has length 25 [2021-10-13 19:53:33,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:33,547 INFO L470 AbstractCegarLoop]: Abstraction has 10242 states and 59230 transitions. [2021-10-13 19:53:33,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 10242 states and 59230 transitions. [2021-10-13 19:53:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:33,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:33,577 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:33,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:33,778 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 [2021-10-13 19:53:33,778 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:33,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:33,779 INFO L82 PathProgramCache]: Analyzing trace with hash 2120507973, now seen corresponding path program 15 times [2021-10-13 19:53:33,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:33,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688689616] [2021-10-13 19:53:33,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:53:33,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:33,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:33,782 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) [2021-10-13 19:53:33,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-13 19:53:34,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:53:34,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:34,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:34,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:35,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:35,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:35,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688689616] [2021-10-13 19:53:35,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688689616] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:35,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:35,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:35,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513848647] [2021-10-13 19:53:35,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:35,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:35,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:35,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:35,721 INFO L87 Difference]: Start difference. First operand 10242 states and 59230 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:36,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:36,729 INFO L93 Difference]: Finished difference Result 12366 states and 68344 transitions. [2021-10-13 19:53:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:53:36,731 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:36,786 INFO L225 Difference]: With dead ends: 12366 [2021-10-13 19:53:36,786 INFO L226 Difference]: Without dead ends: 12256 [2021-10-13 19:53:36,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 299.3ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:36,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12256 states. [2021-10-13 19:53:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12256 to 10424. [2021-10-13 19:53:37,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10424 states, 10423 states have (on average 5.797754964981292) internal successors, (60430), 10423 states have internal predecessors, (60430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10424 states to 10424 states and 60430 transitions. [2021-10-13 19:53:37,306 INFO L78 Accepts]: Start accepts. Automaton has 10424 states and 60430 transitions. Word has length 25 [2021-10-13 19:53:37,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:37,306 INFO L470 AbstractCegarLoop]: Abstraction has 10424 states and 60430 transitions. [2021-10-13 19:53:37,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:37,306 INFO L276 IsEmpty]: Start isEmpty. Operand 10424 states and 60430 transitions. [2021-10-13 19:53:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:53:37,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:37,341 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:37,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:37,543 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 [2021-10-13 19:53:37,543 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:37,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1050767685, now seen corresponding path program 16 times [2021-10-13 19:53:37,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:37,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263054707] [2021-10-13 19:53:37,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:53:37,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:37,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:37,546 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) [2021-10-13 19:53:37,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-13 19:53:38,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:53:38,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:38,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:53:38,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:39,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:39,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:39,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263054707] [2021-10-13 19:53:39,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263054707] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:39,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:39,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 19:53:39,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148097471] [2021-10-13 19:53:39,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 19:53:39,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:39,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 19:53:39,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:39,471 INFO L87 Difference]: Start difference. First operand 10424 states and 60430 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:40,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:40,392 INFO L93 Difference]: Finished difference Result 12146 states and 67402 transitions. [2021-10-13 19:53:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:53:40,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-13 19:53:40,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:40,449 INFO L225 Difference]: With dead ends: 12146 [2021-10-13 19:53:40,449 INFO L226 Difference]: Without dead ends: 12018 [2021-10-13 19:53:40,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 299.6ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 19:53:40,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12018 states. [2021-10-13 19:53:40,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12018 to 10454. [2021-10-13 19:53:40,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10454 states, 10453 states have (on average 5.818042667176887) internal successors, (60816), 10453 states have internal predecessors, (60816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10454 states to 10454 states and 60816 transitions. [2021-10-13 19:53:40,981 INFO L78 Accepts]: Start accepts. Automaton has 10454 states and 60816 transitions. Word has length 25 [2021-10-13 19:53:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:40,981 INFO L470 AbstractCegarLoop]: Abstraction has 10454 states and 60816 transitions. [2021-10-13 19:53:40,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 10454 states and 60816 transitions. [2021-10-13 19:53:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:53:41,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:41,015 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:41,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:41,229 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 [2021-10-13 19:53:41,229 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:41,230 INFO L82 PathProgramCache]: Analyzing trace with hash -357013505, now seen corresponding path program 15 times [2021-10-13 19:53:41,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:41,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074647807] [2021-10-13 19:53:41,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:53:41,231 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:41,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:41,232 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) [2021-10-13 19:53:41,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-13 19:53:42,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:53:42,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:42,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:53:42,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:42,811 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:42,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:43,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:43,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074647807] [2021-10-13 19:53:43,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074647807] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:43,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:43,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 19:53:43,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978741794] [2021-10-13 19:53:43,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:53:43,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:43,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:53:43,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:53:43,257 INFO L87 Difference]: Start difference. First operand 10454 states and 60816 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:46,097 INFO L93 Difference]: Finished difference Result 13360 states and 73509 transitions. [2021-10-13 19:53:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:53:46,098 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:53:46,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:46,155 INFO L225 Difference]: With dead ends: 13360 [2021-10-13 19:53:46,156 INFO L226 Difference]: Without dead ends: 13324 [2021-10-13 19:53:46,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1385.4ms TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:53:46,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13324 states. [2021-10-13 19:53:46,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13324 to 11300. [2021-10-13 19:53:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11300 states, 11299 states have (on average 5.765908487476768) internal successors, (65149), 11299 states have internal predecessors, (65149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11300 states to 11300 states and 65149 transitions. [2021-10-13 19:53:46,653 INFO L78 Accepts]: Start accepts. Automaton has 11300 states and 65149 transitions. Word has length 26 [2021-10-13 19:53:46,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:53:46,653 INFO L470 AbstractCegarLoop]: Abstraction has 11300 states and 65149 transitions. [2021-10-13 19:53:46,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 11300 states and 65149 transitions. [2021-10-13 19:53:46,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:53:46,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:53:46,693 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:53:46,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-13 19:53:46,893 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 [2021-10-13 19:53:46,893 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:53:46,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:53:46,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1153781041, now seen corresponding path program 16 times [2021-10-13 19:53:46,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:53:46,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629878535] [2021-10-13 19:53:46,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:53:46,895 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:53:46,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:53:46,897 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) [2021-10-13 19:53:46,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-13 19:53:47,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:53:47,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:53:47,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:53:47,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:53:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:48,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:53:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:53:48,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:53:48,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629878535] [2021-10-13 19:53:48,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629878535] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:53:48,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:53:48,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 19:53:48,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372745632] [2021-10-13 19:53:48,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:53:49,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:53:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:53:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:53:49,010 INFO L87 Difference]: Start difference. First operand 11300 states and 65149 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:53:59,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:53:59,915 INFO L93 Difference]: Finished difference Result 16788 states and 90179 transitions. [2021-10-13 19:53:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 19:53:59,915 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:53:59,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:53:59,992 INFO L225 Difference]: With dead ends: 16788 [2021-10-13 19:53:59,992 INFO L226 Difference]: Without dead ends: 16764 [2021-10-13 19:53:59,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2709.9ms TimeCoverageRelationStatistics Valid=259, Invalid=1633, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 19:54:00,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16764 states. [2021-10-13 19:54:00,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16764 to 12136. [2021-10-13 19:54:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12136 states, 12135 states have (on average 5.786402966625464) internal successors, (70218), 12135 states have internal predecessors, (70218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12136 states to 12136 states and 70218 transitions. [2021-10-13 19:54:00,603 INFO L78 Accepts]: Start accepts. Automaton has 12136 states and 70218 transitions. Word has length 26 [2021-10-13 19:54:00,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:00,603 INFO L470 AbstractCegarLoop]: Abstraction has 12136 states and 70218 transitions. [2021-10-13 19:54:00,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:00,603 INFO L276 IsEmpty]: Start isEmpty. Operand 12136 states and 70218 transitions. [2021-10-13 19:54:00,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:54:00,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:00,639 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:00,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-13 19:54:00,839 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 [2021-10-13 19:54:00,840 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:00,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:00,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1591463423, now seen corresponding path program 17 times [2021-10-13 19:54:00,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:00,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580011434] [2021-10-13 19:54:00,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:54:00,842 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:00,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:00,843 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) [2021-10-13 19:54:00,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-13 19:54:01,697 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:54:01,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:01,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:54:01,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:02,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:02,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:02,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580011434] [2021-10-13 19:54:02,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580011434] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:02,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:02,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:54:02,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939131154] [2021-10-13 19:54:02,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:54:02,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:54:02,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:54:02,691 INFO L87 Difference]: Start difference. First operand 12136 states and 70218 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:05,926 INFO L93 Difference]: Finished difference Result 17242 states and 93839 transitions. [2021-10-13 19:54:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:54:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 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 26 [2021-10-13 19:54:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:06,004 INFO L225 Difference]: With dead ends: 17242 [2021-10-13 19:54:06,004 INFO L226 Difference]: Without dead ends: 17204 [2021-10-13 19:54:06,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1159.9ms TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:54:06,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17204 states. [2021-10-13 19:54:06,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17204 to 13074. [2021-10-13 19:54:06,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13074 states, 13073 states have (on average 5.848848772278743) internal successors, (76462), 13073 states have internal predecessors, (76462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13074 states to 13074 states and 76462 transitions. [2021-10-13 19:54:06,543 INFO L78 Accepts]: Start accepts. Automaton has 13074 states and 76462 transitions. Word has length 26 [2021-10-13 19:54:06,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:06,543 INFO L470 AbstractCegarLoop]: Abstraction has 13074 states and 76462 transitions. [2021-10-13 19:54:06,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:06,543 INFO L276 IsEmpty]: Start isEmpty. Operand 13074 states and 76462 transitions. [2021-10-13 19:54:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:54:06,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:06,741 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:06,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-13 19:54:06,954 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 [2021-10-13 19:54:06,955 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:06,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:06,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1991550948, now seen corresponding path program 18 times [2021-10-13 19:54:06,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:06,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522179183] [2021-10-13 19:54:06,956 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:54:06,957 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:06,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:06,958 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) [2021-10-13 19:54:06,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-13 19:54:08,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 19:54:08,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:08,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:54:08,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:09,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:10,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:10,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522179183] [2021-10-13 19:54:10,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522179183] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:10,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:10,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 19:54:10,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955029317] [2021-10-13 19:54:10,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:54:10,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:10,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:54:10,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:54:10,306 INFO L87 Difference]: Start difference. First operand 13074 states and 76462 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:29,053 INFO L93 Difference]: Finished difference Result 18780 states and 102549 transitions. [2021-10-13 19:54:29,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 19:54:29,053 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:54:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:29,141 INFO L225 Difference]: With dead ends: 18780 [2021-10-13 19:54:29,141 INFO L226 Difference]: Without dead ends: 18678 [2021-10-13 19:54:29,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 5620.0ms TimeCoverageRelationStatistics Valid=334, Invalid=1388, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:54:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18678 states. [2021-10-13 19:54:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18678 to 13516. [2021-10-13 19:54:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13516 states, 13515 states have (on average 5.842101368849427) internal successors, (78956), 13515 states have internal predecessors, (78956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13516 states to 13516 states and 78956 transitions. [2021-10-13 19:54:29,732 INFO L78 Accepts]: Start accepts. Automaton has 13516 states and 78956 transitions. Word has length 26 [2021-10-13 19:54:29,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:29,733 INFO L470 AbstractCegarLoop]: Abstraction has 13516 states and 78956 transitions. [2021-10-13 19:54:29,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:29,733 INFO L276 IsEmpty]: Start isEmpty. Operand 13516 states and 78956 transitions. [2021-10-13 19:54:29,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:54:29,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:29,777 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:29,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-13 19:54:29,978 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 [2021-10-13 19:54:29,978 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:29,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:29,979 INFO L82 PathProgramCache]: Analyzing trace with hash -947397759, now seen corresponding path program 19 times [2021-10-13 19:54:29,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:29,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424950658] [2021-10-13 19:54:29,980 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:54:29,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:29,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:29,981 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) [2021-10-13 19:54:29,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-13 19:54:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:54:31,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:54:31,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:31,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:32,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:32,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424950658] [2021-10-13 19:54:32,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424950658] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:32,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:32,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 19:54:32,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007546195] [2021-10-13 19:54:32,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:54:32,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:32,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:54:32,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:54:32,614 INFO L87 Difference]: Start difference. First operand 13516 states and 78956 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:45,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:54:45,993 INFO L93 Difference]: Finished difference Result 22142 states and 118134 transitions. [2021-10-13 19:54:45,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:54:45,994 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:54:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:54:46,145 INFO L225 Difference]: With dead ends: 22142 [2021-10-13 19:54:46,145 INFO L226 Difference]: Without dead ends: 22142 [2021-10-13 19:54:46,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2158.2ms TimeCoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:54:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22142 states. [2021-10-13 19:54:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22142 to 14026. [2021-10-13 19:54:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14026 states, 14025 states have (on average 5.879073083778966) internal successors, (82454), 14025 states have internal predecessors, (82454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:47,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14026 states to 14026 states and 82454 transitions. [2021-10-13 19:54:47,154 INFO L78 Accepts]: Start accepts. Automaton has 14026 states and 82454 transitions. Word has length 26 [2021-10-13 19:54:47,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:54:47,154 INFO L470 AbstractCegarLoop]: Abstraction has 14026 states and 82454 transitions. [2021-10-13 19:54:47,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:54:47,154 INFO L276 IsEmpty]: Start isEmpty. Operand 14026 states and 82454 transitions. [2021-10-13 19:54:47,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:54:47,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:54:47,361 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:54:47,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-13 19:54:47,574 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 [2021-10-13 19:54:47,575 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:54:47,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:54:47,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1989619348, now seen corresponding path program 20 times [2021-10-13 19:54:47,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:54:47,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185416157] [2021-10-13 19:54:47,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:54:47,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:54:47,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:54:47,579 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) [2021-10-13 19:54:47,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-13 19:54:48,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:54:48,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:54:48,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:54:48,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:54:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:49,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:54:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:54:49,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:54:49,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185416157] [2021-10-13 19:54:49,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185416157] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:54:49,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:54:49,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-13 19:54:49,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532189696] [2021-10-13 19:54:49,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:54:49,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:54:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:54:49,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:54:49,990 INFO L87 Difference]: Start difference. First operand 14026 states and 82454 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:55:01,643 INFO L93 Difference]: Finished difference Result 22714 states and 121741 transitions. [2021-10-13 19:55:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:55:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:55:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:55:01,750 INFO L225 Difference]: With dead ends: 22714 [2021-10-13 19:55:01,750 INFO L226 Difference]: Without dead ends: 22714 [2021-10-13 19:55:01,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2093.7ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 19:55:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22714 states. [2021-10-13 19:55:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22714 to 15162. [2021-10-13 19:55:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15162 states, 15161 states have (on average 5.887276564870391) internal successors, (89257), 15161 states have internal predecessors, (89257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15162 states to 15162 states and 89257 transitions. [2021-10-13 19:55:02,492 INFO L78 Accepts]: Start accepts. Automaton has 15162 states and 89257 transitions. Word has length 26 [2021-10-13 19:55:02,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:55:02,493 INFO L470 AbstractCegarLoop]: Abstraction has 15162 states and 89257 transitions. [2021-10-13 19:55:02,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 15162 states and 89257 transitions. [2021-10-13 19:55:02,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:55:02,801 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:55:02,801 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:55:02,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-13 19:55:03,002 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 [2021-10-13 19:55:03,002 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:55:03,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:55:03,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1039170369, now seen corresponding path program 21 times [2021-10-13 19:55:03,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:55:03,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608712406] [2021-10-13 19:55:03,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:55:03,004 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:55:03,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:55:03,005 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) [2021-10-13 19:55:03,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-13 19:55:04,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:55:04,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:55:04,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:55:04,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:55:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:06,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:55:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:07,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:55:07,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608712406] [2021-10-13 19:55:07,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608712406] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:55:07,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:55:07,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 19:55:07,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270025813] [2021-10-13 19:55:07,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:55:07,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:55:07,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:55:07,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=170, Unknown=1, NotChecked=0, Total=210 [2021-10-13 19:55:07,230 INFO L87 Difference]: Start difference. First operand 15162 states and 89257 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:21,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:55:21,472 INFO L93 Difference]: Finished difference Result 20704 states and 114284 transitions. [2021-10-13 19:55:21,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:55:21,473 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:55:21,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:55:21,637 INFO L225 Difference]: With dead ends: 20704 [2021-10-13 19:55:21,637 INFO L226 Difference]: Without dead ends: 20650 [2021-10-13 19:55:21,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 11347.3ms TimeCoverageRelationStatistics Valid=126, Invalid=574, Unknown=2, NotChecked=0, Total=702 [2021-10-13 19:55:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20650 states. [2021-10-13 19:55:22,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20650 to 15980. [2021-10-13 19:55:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15980 states, 15979 states have (on average 5.90287252018274) internal successors, (94322), 15979 states have internal predecessors, (94322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15980 states to 15980 states and 94322 transitions. [2021-10-13 19:55:22,635 INFO L78 Accepts]: Start accepts. Automaton has 15980 states and 94322 transitions. Word has length 26 [2021-10-13 19:55:22,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:55:22,635 INFO L470 AbstractCegarLoop]: Abstraction has 15980 states and 94322 transitions. [2021-10-13 19:55:22,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 15980 states and 94322 transitions. [2021-10-13 19:55:22,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:55:22,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:55:22,705 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:55:22,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-13 19:55:22,918 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 [2021-10-13 19:55:22,918 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:55:22,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:55:22,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2058992753, now seen corresponding path program 22 times [2021-10-13 19:55:22,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:55:22,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190032493] [2021-10-13 19:55:22,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:55:22,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:55:22,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:55:22,921 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) [2021-10-13 19:55:22,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-13 19:55:23,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:55:23,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:55:23,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:55:23,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:55:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:26,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:55:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:27,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:55:27,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190032493] [2021-10-13 19:55:27,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190032493] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:55:27,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:55:27,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 19:55:27,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966650146] [2021-10-13 19:55:27,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:55:27,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:55:27,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:55:27,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=216, Unknown=1, NotChecked=0, Total=272 [2021-10-13 19:55:27,095 INFO L87 Difference]: Start difference. First operand 15980 states and 94322 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:55:40,881 INFO L93 Difference]: Finished difference Result 24022 states and 130866 transitions. [2021-10-13 19:55:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 19:55:40,882 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:55:40,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:55:41,129 INFO L225 Difference]: With dead ends: 24022 [2021-10-13 19:55:41,129 INFO L226 Difference]: Without dead ends: 24008 [2021-10-13 19:55:41,130 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 12987.3ms TimeCoverageRelationStatistics Valid=263, Invalid=1217, Unknown=2, NotChecked=0, Total=1482 [2021-10-13 19:55:41,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24008 states. [2021-10-13 19:55:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24008 to 16602. [2021-10-13 19:55:41,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16602 states, 16601 states have (on average 5.924763568459731) internal successors, (98357), 16601 states have internal predecessors, (98357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16602 states to 16602 states and 98357 transitions. [2021-10-13 19:55:42,221 INFO L78 Accepts]: Start accepts. Automaton has 16602 states and 98357 transitions. Word has length 26 [2021-10-13 19:55:42,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:55:42,222 INFO L470 AbstractCegarLoop]: Abstraction has 16602 states and 98357 transitions. [2021-10-13 19:55:42,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:42,225 INFO L276 IsEmpty]: Start isEmpty. Operand 16602 states and 98357 transitions. [2021-10-13 19:55:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:55:42,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:55:42,321 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:55:42,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-13 19:55:42,534 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 [2021-10-13 19:55:42,535 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:55:42,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:55:42,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1706617063, now seen corresponding path program 23 times [2021-10-13 19:55:42,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:55:42,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198142252] [2021-10-13 19:55:42,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:55:42,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:55:42,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:55:42,539 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) [2021-10-13 19:55:42,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-13 19:55:43,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:55:43,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:55:43,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:55:43,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:55:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:44,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:55:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:44,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:55:44,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198142252] [2021-10-13 19:55:44,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198142252] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:55:44,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:55:44,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:55:44,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024405977] [2021-10-13 19:55:44,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:55:44,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:55:44,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:55:44,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:55:44,634 INFO L87 Difference]: Start difference. First operand 16602 states and 98357 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:55:53,806 INFO L93 Difference]: Finished difference Result 23104 states and 127314 transitions. [2021-10-13 19:55:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 19:55:53,809 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 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 26 [2021-10-13 19:55:53,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:55:53,922 INFO L225 Difference]: With dead ends: 23104 [2021-10-13 19:55:53,923 INFO L226 Difference]: Without dead ends: 23104 [2021-10-13 19:55:53,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1943.5ms TimeCoverageRelationStatistics Valid=228, Invalid=828, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:55:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23104 states. [2021-10-13 19:55:54,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23104 to 16160. [2021-10-13 19:55:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16160 states, 16159 states have (on average 5.908472058914537) internal successors, (95475), 16159 states have internal predecessors, (95475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16160 states to 16160 states and 95475 transitions. [2021-10-13 19:55:54,769 INFO L78 Accepts]: Start accepts. Automaton has 16160 states and 95475 transitions. Word has length 26 [2021-10-13 19:55:54,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:55:54,769 INFO L470 AbstractCegarLoop]: Abstraction has 16160 states and 95475 transitions. [2021-10-13 19:55:54,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:55:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand 16160 states and 95475 transitions. [2021-10-13 19:55:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:55:54,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:55:54,850 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:55:54,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-13 19:55:55,051 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 [2021-10-13 19:55:55,052 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:55:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:55:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1099049969, now seen corresponding path program 24 times [2021-10-13 19:55:55,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:55:55,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130244503] [2021-10-13 19:55:55,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:55:55,053 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:55:55,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:55:55,054 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) [2021-10-13 19:55:55,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-13 19:55:56,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:55:56,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:55:56,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:55:56,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:55:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:56,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:55:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:55:57,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:55:57,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130244503] [2021-10-13 19:55:57,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130244503] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:55:57,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:55:57,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 19:55:57,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828257295] [2021-10-13 19:55:57,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:55:57,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:55:57,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:55:57,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:55:57,369 INFO L87 Difference]: Start difference. First operand 16160 states and 95475 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:06,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:56:06,128 INFO L93 Difference]: Finished difference Result 22064 states and 123592 transitions. [2021-10-13 19:56:06,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 19:56:06,129 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:56:06,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:56:06,252 INFO L225 Difference]: With dead ends: 22064 [2021-10-13 19:56:06,253 INFO L226 Difference]: Without dead ends: 22028 [2021-10-13 19:56:06,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 4074.2ms TimeCoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 19:56:06,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22028 states. [2021-10-13 19:56:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22028 to 17430. [2021-10-13 19:56:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17430 states, 17429 states have (on average 5.972172815422572) internal successors, (104089), 17429 states have internal predecessors, (104089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17430 states to 17430 states and 104089 transitions. [2021-10-13 19:56:07,163 INFO L78 Accepts]: Start accepts. Automaton has 17430 states and 104089 transitions. Word has length 26 [2021-10-13 19:56:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:56:07,164 INFO L470 AbstractCegarLoop]: Abstraction has 17430 states and 104089 transitions. [2021-10-13 19:56:07,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 17430 states and 104089 transitions. [2021-10-13 19:56:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:56:07,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:56:07,242 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:56:07,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-13 19:56:07,455 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 [2021-10-13 19:56:07,455 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:56:07,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:56:07,456 INFO L82 PathProgramCache]: Analyzing trace with hash 626372111, now seen corresponding path program 25 times [2021-10-13 19:56:07,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:56:07,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058116836] [2021-10-13 19:56:07,457 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:56:07,457 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:56:07,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:56:07,458 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) [2021-10-13 19:56:07,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-13 19:56:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:56:08,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:56:08,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:56:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:10,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:56:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:11,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:56:11,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058116836] [2021-10-13 19:56:11,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058116836] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:56:11,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:56:11,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 19:56:11,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088644562] [2021-10-13 19:56:11,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:56:11,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:56:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:56:11,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=216, Unknown=1, NotChecked=0, Total=272 [2021-10-13 19:56:11,747 INFO L87 Difference]: Start difference. First operand 17430 states and 104089 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:27,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:56:27,950 INFO L93 Difference]: Finished difference Result 28930 states and 156589 transitions. [2021-10-13 19:56:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 19:56:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:56:27,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:56:28,238 INFO L225 Difference]: With dead ends: 28930 [2021-10-13 19:56:28,238 INFO L226 Difference]: Without dead ends: 28624 [2021-10-13 19:56:28,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 8892.4ms TimeCoverageRelationStatistics Valid=215, Invalid=973, Unknown=2, NotChecked=0, Total=1190 [2021-10-13 19:56:28,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28624 states. [2021-10-13 19:56:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28624 to 18854. [2021-10-13 19:56:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18854 states, 18853 states have (on average 5.993528881345144) internal successors, (112996), 18853 states have internal predecessors, (112996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:29,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18854 states to 18854 states and 112996 transitions. [2021-10-13 19:56:29,435 INFO L78 Accepts]: Start accepts. Automaton has 18854 states and 112996 transitions. Word has length 26 [2021-10-13 19:56:29,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:56:29,435 INFO L470 AbstractCegarLoop]: Abstraction has 18854 states and 112996 transitions. [2021-10-13 19:56:29,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:56:29,436 INFO L276 IsEmpty]: Start isEmpty. Operand 18854 states and 112996 transitions. [2021-10-13 19:56:29,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:56:29,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:56:29,513 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:56:29,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2021-10-13 19:56:29,713 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 [2021-10-13 19:56:29,714 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:56:29,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:56:29,714 INFO L82 PathProgramCache]: Analyzing trace with hash 28709248, now seen corresponding path program 26 times [2021-10-13 19:56:29,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:56:29,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876527872] [2021-10-13 19:56:29,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:56:29,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:56:29,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:56:29,716 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) [2021-10-13 19:56:29,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-13 19:56:31,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:56:31,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:56:31,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:56:31,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:56:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:33,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:56:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:56:34,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:56:34,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876527872] [2021-10-13 19:56:34,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876527872] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:56:34,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:56:34,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 19:56:34,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304563629] [2021-10-13 19:56:34,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:56:34,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:56:34,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:56:34,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=216, Unknown=1, NotChecked=0, Total=272 [2021-10-13 19:56:34,222 INFO L87 Difference]: Start difference. First operand 18854 states and 112996 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:04,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:57:04,343 INFO L93 Difference]: Finished difference Result 22954 states and 130322 transitions. [2021-10-13 19:57:04,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:57:04,344 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:57:04,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:57:04,500 INFO L225 Difference]: With dead ends: 22954 [2021-10-13 19:57:04,500 INFO L226 Difference]: Without dead ends: 22878 [2021-10-13 19:57:04,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 12137.7ms TimeCoverageRelationStatistics Valid=211, Invalid=909, Unknown=2, NotChecked=0, Total=1122 [2021-10-13 19:57:04,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22878 states. [2021-10-13 19:57:05,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22878 to 18628. [2021-10-13 19:57:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18628 states, 18627 states have (on average 5.965319160358619) internal successors, (111116), 18627 states have internal predecessors, (111116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18628 states to 18628 states and 111116 transitions. [2021-10-13 19:57:05,662 INFO L78 Accepts]: Start accepts. Automaton has 18628 states and 111116 transitions. Word has length 26 [2021-10-13 19:57:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:57:05,663 INFO L470 AbstractCegarLoop]: Abstraction has 18628 states and 111116 transitions. [2021-10-13 19:57:05,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand 18628 states and 111116 transitions. [2021-10-13 19:57:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:57:05,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:57:05,731 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:57:05,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-13 19:57:05,932 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 [2021-10-13 19:57:05,932 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:57:05,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:57:05,933 INFO L82 PathProgramCache]: Analyzing trace with hash -984439297, now seen corresponding path program 27 times [2021-10-13 19:57:05,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:57:05,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577940836] [2021-10-13 19:57:05,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:57:05,934 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:57:05,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:57:05,935 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) [2021-10-13 19:57:05,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-13 19:57:07,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 19:57:07,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:57:07,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:57:07,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:57:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:07,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:57:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:08,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:57:08,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577940836] [2021-10-13 19:57:08,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577940836] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:57:08,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:57:08,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 19:57:08,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30659491] [2021-10-13 19:57:08,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:57:08,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:57:08,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:57:08,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:57:08,138 INFO L87 Difference]: Start difference. First operand 18628 states and 111116 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:57:30,728 INFO L93 Difference]: Finished difference Result 24150 states and 136591 transitions. [2021-10-13 19:57:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:57:30,729 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:57:30,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:57:31,095 INFO L225 Difference]: With dead ends: 24150 [2021-10-13 19:57:31,096 INFO L226 Difference]: Without dead ends: 24062 [2021-10-13 19:57:31,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3218.9ms TimeCoverageRelationStatistics Valid=134, Invalid=621, Unknown=1, NotChecked=0, Total=756 [2021-10-13 19:57:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24062 states. [2021-10-13 19:57:31,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24062 to 20166. [2021-10-13 19:57:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20166 states, 20165 states have (on average 5.975254153235805) internal successors, (120491), 20165 states have internal predecessors, (120491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20166 states to 20166 states and 120491 transitions. [2021-10-13 19:57:32,313 INFO L78 Accepts]: Start accepts. Automaton has 20166 states and 120491 transitions. Word has length 26 [2021-10-13 19:57:32,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:57:32,315 INFO L470 AbstractCegarLoop]: Abstraction has 20166 states and 120491 transitions. [2021-10-13 19:57:32,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:32,316 INFO L276 IsEmpty]: Start isEmpty. Operand 20166 states and 120491 transitions. [2021-10-13 19:57:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:57:32,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:57:32,395 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:57:32,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Ended with exit code 0 [2021-10-13 19:57:32,597 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 [2021-10-13 19:57:32,597 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:57:32,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:57:32,598 INFO L82 PathProgramCache]: Analyzing trace with hash -2004261681, now seen corresponding path program 28 times [2021-10-13 19:57:32,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:57:32,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845535828] [2021-10-13 19:57:32,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:57:32,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:57:32,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:57:32,600 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) [2021-10-13 19:57:32,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-13 19:57:33,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:57:33,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:57:33,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 19:57:33,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:57:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:34,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:57:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:34,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:57:34,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845535828] [2021-10-13 19:57:34,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845535828] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:57:34,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:57:34,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-13 19:57:34,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603824959] [2021-10-13 19:57:34,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:57:34,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:57:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:57:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:57:34,813 INFO L87 Difference]: Start difference. First operand 20166 states and 120491 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:57:46,866 INFO L93 Difference]: Finished difference Result 26522 states and 149198 transitions. [2021-10-13 19:57:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 19:57:46,867 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:57:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:57:47,030 INFO L225 Difference]: With dead ends: 26522 [2021-10-13 19:57:47,031 INFO L226 Difference]: Without dead ends: 26508 [2021-10-13 19:57:47,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3990.0ms TimeCoverageRelationStatistics Valid=308, Invalid=1414, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:57:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26508 states. [2021-10-13 19:57:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26508 to 20750. [2021-10-13 19:57:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20750 states, 20749 states have (on average 5.969203335100487) internal successors, (123855), 20749 states have internal predecessors, (123855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20750 states to 20750 states and 123855 transitions. [2021-10-13 19:57:48,121 INFO L78 Accepts]: Start accepts. Automaton has 20750 states and 123855 transitions. Word has length 26 [2021-10-13 19:57:48,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:57:48,121 INFO L470 AbstractCegarLoop]: Abstraction has 20750 states and 123855 transitions. [2021-10-13 19:57:48,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 20750 states and 123855 transitions. [2021-10-13 19:57:48,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:57:48,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:57:48,406 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:57:48,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-13 19:57:48,607 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 [2021-10-13 19:57:48,607 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:57:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:57:48,607 INFO L82 PathProgramCache]: Analyzing trace with hash 681825807, now seen corresponding path program 29 times [2021-10-13 19:57:48,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:57:48,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561170328] [2021-10-13 19:57:48,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:57:48,608 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:57:48,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:57:48,610 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) [2021-10-13 19:57:48,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-13 19:57:49,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:57:49,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:57:49,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:57:49,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:57:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:50,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:57:50,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:57:50,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:57:50,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561170328] [2021-10-13 19:57:50,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561170328] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:57:50,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:57:50,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:57:50,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154988506] [2021-10-13 19:57:50,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:57:50,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:57:50,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:57:50,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:57:50,356 INFO L87 Difference]: Start difference. First operand 20750 states and 123855 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:57:55,226 INFO L93 Difference]: Finished difference Result 23740 states and 137775 transitions. [2021-10-13 19:57:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 19:57:55,226 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 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 26 [2021-10-13 19:57:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:57:55,487 INFO L225 Difference]: With dead ends: 23740 [2021-10-13 19:57:55,487 INFO L226 Difference]: Without dead ends: 23740 [2021-10-13 19:57:55,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 554.7ms TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:57:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23740 states. [2021-10-13 19:57:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23740 to 20490. [2021-10-13 19:57:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20490 states, 20489 states have (on average 5.96866611352433) internal successors, (122292), 20489 states have internal predecessors, (122292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20490 states to 20490 states and 122292 transitions. [2021-10-13 19:57:56,530 INFO L78 Accepts]: Start accepts. Automaton has 20490 states and 122292 transitions. Word has length 26 [2021-10-13 19:57:56,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:57:56,530 INFO L470 AbstractCegarLoop]: Abstraction has 20490 states and 122292 transitions. [2021-10-13 19:57:56,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:57:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 20490 states and 122292 transitions. [2021-10-13 19:57:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:57:56,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:57:56,611 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:57:56,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-13 19:57:56,824 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 [2021-10-13 19:57:56,825 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:57:56,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:57:56,826 INFO L82 PathProgramCache]: Analyzing trace with hash -345945332, now seen corresponding path program 13 times [2021-10-13 19:57:56,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:57:56,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736756719] [2021-10-13 19:57:56,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:57:56,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:57:56,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:57:56,828 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) [2021-10-13 19:57:56,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-13 19:57:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:57:58,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:57:58,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:58:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:00,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:58:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:00,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:58:00,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736756719] [2021-10-13 19:58:00,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736756719] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:58:00,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:58:00,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 19:58:00,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589070199] [2021-10-13 19:58:00,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:58:00,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:58:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:58:00,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=172, Unknown=1, NotChecked=0, Total=210 [2021-10-13 19:58:00,926 INFO L87 Difference]: Start difference. First operand 20490 states and 122292 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:10,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:58:10,226 INFO L93 Difference]: Finished difference Result 44386 states and 241986 transitions. [2021-10-13 19:58:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:58:10,227 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:58:10,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:58:10,712 INFO L225 Difference]: With dead ends: 44386 [2021-10-13 19:58:10,713 INFO L226 Difference]: Without dead ends: 44378 [2021-10-13 19:58:10,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 3409.3ms TimeCoverageRelationStatistics Valid=146, Invalid=783, Unknown=1, NotChecked=0, Total=930 [2021-10-13 19:58:10,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44378 states. [2021-10-13 19:58:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44378 to 22874. [2021-10-13 19:58:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22874 states, 22873 states have (on average 6.040965330302103) internal successors, (138175), 22873 states have internal predecessors, (138175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22874 states to 22874 states and 138175 transitions. [2021-10-13 19:58:12,283 INFO L78 Accepts]: Start accepts. Automaton has 22874 states and 138175 transitions. Word has length 26 [2021-10-13 19:58:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:58:12,283 INFO L470 AbstractCegarLoop]: Abstraction has 22874 states and 138175 transitions. [2021-10-13 19:58:12,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:12,283 INFO L276 IsEmpty]: Start isEmpty. Operand 22874 states and 138175 transitions. [2021-10-13 19:58:12,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:58:12,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:58:12,606 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:58:12,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-13 19:58:12,822 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 [2021-10-13 19:58:12,823 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:58:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:58:12,824 INFO L82 PathProgramCache]: Analyzing trace with hash 323199046, now seen corresponding path program 14 times [2021-10-13 19:58:12,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:58:12,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710217268] [2021-10-13 19:58:12,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:58:12,825 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:58:12,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:58:12,826 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) [2021-10-13 19:58:12,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-13 19:58:14,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:58:14,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:58:14,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 19:58:14,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:58:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:14,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:58:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:15,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:58:15,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710217268] [2021-10-13 19:58:15,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710217268] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:58:15,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:58:15,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-13 19:58:15,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771805403] [2021-10-13 19:58:15,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:58:15,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:58:15,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:58:15,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:58:15,651 INFO L87 Difference]: Start difference. First operand 22874 states and 138175 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:28,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:58:28,164 INFO L93 Difference]: Finished difference Result 26119 states and 149886 transitions. [2021-10-13 19:58:28,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 19:58:28,165 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 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 26 [2021-10-13 19:58:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:58:28,435 INFO L225 Difference]: With dead ends: 26119 [2021-10-13 19:58:28,436 INFO L226 Difference]: Without dead ends: 25972 [2021-10-13 19:58:28,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 3399.0ms TimeCoverageRelationStatistics Valid=319, Invalid=1163, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 19:58:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25972 states. [2021-10-13 19:58:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25972 to 23120. [2021-10-13 19:58:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23120 states, 23119 states have (on average 6.03456031835287) internal successors, (139513), 23119 states have internal predecessors, (139513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23120 states to 23120 states and 139513 transitions. [2021-10-13 19:58:29,820 INFO L78 Accepts]: Start accepts. Automaton has 23120 states and 139513 transitions. Word has length 26 [2021-10-13 19:58:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:58:29,821 INFO L470 AbstractCegarLoop]: Abstraction has 23120 states and 139513 transitions. [2021-10-13 19:58:29,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 23120 states and 139513 transitions. [2021-10-13 19:58:29,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:58:29,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:58:29,920 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:58:29,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-13 19:58:30,120 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 [2021-10-13 19:58:30,121 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:58:30,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:58:30,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1459985036, now seen corresponding path program 15 times [2021-10-13 19:58:30,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:58:30,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433898894] [2021-10-13 19:58:30,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:58:30,123 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:58:30,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:58:30,124 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) [2021-10-13 19:58:30,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-13 19:58:31,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:58:31,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:58:31,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:58:31,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:58:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:33,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:58:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:34,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:58:34,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433898894] [2021-10-13 19:58:34,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433898894] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:58:34,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:58:34,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 19:58:34,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434298242] [2021-10-13 19:58:34,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:58:34,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:58:34,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:58:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2021-10-13 19:58:34,347 INFO L87 Difference]: Start difference. First operand 23120 states and 139513 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:46,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:58:46,716 INFO L93 Difference]: Finished difference Result 37410 states and 207748 transitions. [2021-10-13 19:58:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:58:46,717 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:58:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:58:47,181 INFO L225 Difference]: With dead ends: 37410 [2021-10-13 19:58:47,181 INFO L226 Difference]: Without dead ends: 37354 [2021-10-13 19:58:47,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 8907.8ms TimeCoverageRelationStatistics Valid=112, Invalid=438, Unknown=2, NotChecked=0, Total=552 [2021-10-13 19:58:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37354 states. [2021-10-13 19:58:48,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37354 to 22530. [2021-10-13 19:58:48,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22530 states, 22529 states have (on average 5.965111633894092) internal successors, (134388), 22529 states have internal predecessors, (134388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22530 states to 22530 states and 134388 transitions. [2021-10-13 19:58:48,632 INFO L78 Accepts]: Start accepts. Automaton has 22530 states and 134388 transitions. Word has length 26 [2021-10-13 19:58:48,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:58:48,639 INFO L470 AbstractCegarLoop]: Abstraction has 22530 states and 134388 transitions. [2021-10-13 19:58:48,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:48,639 INFO L276 IsEmpty]: Start isEmpty. Operand 22530 states and 134388 transitions. [2021-10-13 19:58:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:58:48,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:58:48,741 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:58:48,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-13 19:58:48,943 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 [2021-10-13 19:58:48,943 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:58:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:58:48,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1364609833, now seen corresponding path program 16 times [2021-10-13 19:58:48,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:58:48,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142661592] [2021-10-13 19:58:48,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:58:48,945 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:58:48,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:58:48,948 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) [2021-10-13 19:58:48,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-13 19:58:50,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:58:50,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:58:50,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:58:50,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:58:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:50,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:58:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:58:51,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:58:51,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142661592] [2021-10-13 19:58:51,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142661592] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:58:51,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:58:51,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 19:58:51,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166693265] [2021-10-13 19:58:51,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 19:58:51,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:58:51,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 19:58:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:58:51,553 INFO L87 Difference]: Start difference. First operand 22530 states and 134388 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:58:57,586 INFO L93 Difference]: Finished difference Result 45610 states and 249414 transitions. [2021-10-13 19:58:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:58:57,588 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:58:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:58:58,088 INFO L225 Difference]: With dead ends: 45610 [2021-10-13 19:58:58,088 INFO L226 Difference]: Without dead ends: 45568 [2021-10-13 19:58:58,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1926.7ms TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:58:58,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45568 states. [2021-10-13 19:58:59,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45568 to 25036. [2021-10-13 19:58:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25036 states, 25035 states have (on average 6.043419213101657) internal successors, (151297), 25035 states have internal predecessors, (151297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25036 states to 25036 states and 151297 transitions. [2021-10-13 19:58:59,693 INFO L78 Accepts]: Start accepts. Automaton has 25036 states and 151297 transitions. Word has length 26 [2021-10-13 19:58:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:58:59,693 INFO L470 AbstractCegarLoop]: Abstraction has 25036 states and 151297 transitions. [2021-10-13 19:58:59,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:58:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 25036 states and 151297 transitions. [2021-10-13 19:59:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:59:00,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:59:00,053 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:59:00,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-13 19:59:00,268 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 [2021-10-13 19:59:00,269 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:59:00,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:59:00,269 INFO L82 PathProgramCache]: Analyzing trace with hash -791372249, now seen corresponding path program 17 times [2021-10-13 19:59:00,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:59:00,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535037262] [2021-10-13 19:59:00,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:59:00,271 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:59:00,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:59:00,272 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) [2021-10-13 19:59:00,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-13 19:59:01,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:59:01,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:59:01,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:59:01,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:59:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:03,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:59:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:04,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:59:04,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535037262] [2021-10-13 19:59:04,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535037262] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:59:04,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:59:04,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 19:59:04,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350549125] [2021-10-13 19:59:04,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:59:04,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:59:04,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:59:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=193, Unknown=1, NotChecked=0, Total=240 [2021-10-13 19:59:04,221 INFO L87 Difference]: Start difference. First operand 25036 states and 151297 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:15,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:59:15,655 INFO L93 Difference]: Finished difference Result 57684 states and 313138 transitions. [2021-10-13 19:59:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:59:15,656 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:59:15,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:59:16,402 INFO L225 Difference]: With dead ends: 57684 [2021-10-13 19:59:16,403 INFO L226 Difference]: Without dead ends: 57684 [2021-10-13 19:59:16,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 7252.9ms TimeCoverageRelationStatistics Valid=131, Invalid=569, Unknown=2, NotChecked=0, Total=702 [2021-10-13 19:59:16,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57684 states. [2021-10-13 19:59:18,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57684 to 27784. [2021-10-13 19:59:18,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27784 states, 27783 states have (on average 6.152683295540438) internal successors, (170940), 27783 states have internal predecessors, (170940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:18,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27784 states to 27784 states and 170940 transitions. [2021-10-13 19:59:18,610 INFO L78 Accepts]: Start accepts. Automaton has 27784 states and 170940 transitions. Word has length 26 [2021-10-13 19:59:18,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:59:18,610 INFO L470 AbstractCegarLoop]: Abstraction has 27784 states and 170940 transitions. [2021-10-13 19:59:18,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:18,610 INFO L276 IsEmpty]: Start isEmpty. Operand 27784 states and 170940 transitions. [2021-10-13 19:59:18,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:59:18,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:59:18,719 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:59:18,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-13 19:59:18,919 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 [2021-10-13 19:59:18,920 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:59:18,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:59:18,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1954354938, now seen corresponding path program 18 times [2021-10-13 19:59:18,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:59:18,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251272842] [2021-10-13 19:59:18,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:59:18,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:59:18,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:59:18,924 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) [2021-10-13 19:59:18,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-13 19:59:20,519 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:59:20,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:59:20,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 19:59:20,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:59:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:20,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:59:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:21,319 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:59:21,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251272842] [2021-10-13 19:59:21,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251272842] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:59:21,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:59:21,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 19:59:21,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450484081] [2021-10-13 19:59:21,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:59:21,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:59:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:59:21,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:59:21,320 INFO L87 Difference]: Start difference. First operand 27784 states and 170940 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:31,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:59:31,907 INFO L93 Difference]: Finished difference Result 50490 states and 281984 transitions. [2021-10-13 19:59:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:59:31,908 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 19:59:31,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:59:32,544 INFO L225 Difference]: With dead ends: 50490 [2021-10-13 19:59:32,544 INFO L226 Difference]: Without dead ends: 50436 [2021-10-13 19:59:32,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1440.2ms TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:59:32,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50436 states. [2021-10-13 19:59:34,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50436 to 30532. [2021-10-13 19:59:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30532 states, 30531 states have (on average 6.23074907471095) internal successors, (190231), 30531 states have internal predecessors, (190231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30532 states to 30532 states and 190231 transitions. [2021-10-13 19:59:34,574 INFO L78 Accepts]: Start accepts. Automaton has 30532 states and 190231 transitions. Word has length 26 [2021-10-13 19:59:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:59:34,575 INFO L470 AbstractCegarLoop]: Abstraction has 30532 states and 190231 transitions. [2021-10-13 19:59:34,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 30532 states and 190231 transitions. [2021-10-13 19:59:34,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:59:34,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:59:34,685 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:59:34,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-13 19:59:34,885 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 [2021-10-13 19:59:34,886 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:59:34,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:59:34,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1480168877, now seen corresponding path program 19 times [2021-10-13 19:59:34,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:59:34,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478335694] [2021-10-13 19:59:34,888 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:59:34,888 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:59:34,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:59:34,889 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) [2021-10-13 19:59:34,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-13 19:59:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:59:36,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 19:59:36,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:59:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:36,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:59:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:37,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:59:37,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478335694] [2021-10-13 19:59:37,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478335694] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:59:37,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:59:37,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 19:59:37,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526379820] [2021-10-13 19:59:37,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:59:37,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:59:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:59:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-13 19:59:37,322 INFO L87 Difference]: Start difference. First operand 30532 states and 190231 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:47,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:59:47,565 INFO L93 Difference]: Finished difference Result 61354 states and 342373 transitions. [2021-10-13 19:59:47,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:59:47,566 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:59:47,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:59:48,343 INFO L225 Difference]: With dead ends: 61354 [2021-10-13 19:59:48,343 INFO L226 Difference]: Without dead ends: 61346 [2021-10-13 19:59:48,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1614.5ms TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:59:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61346 states. [2021-10-13 19:59:50,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61346 to 32030. [2021-10-13 19:59:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32030 states, 32029 states have (on average 6.253707577507884) internal successors, (200300), 32029 states have internal predecessors, (200300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32030 states to 32030 states and 200300 transitions. [2021-10-13 19:59:50,654 INFO L78 Accepts]: Start accepts. Automaton has 32030 states and 200300 transitions. Word has length 26 [2021-10-13 19:59:50,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:59:50,655 INFO L470 AbstractCegarLoop]: Abstraction has 32030 states and 200300 transitions. [2021-10-13 19:59:50,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:59:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 32030 states and 200300 transitions. [2021-10-13 19:59:50,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:59:50,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:59:50,814 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:59:50,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-13 19:59:51,014 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 [2021-10-13 19:59:51,015 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 19:59:51,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:59:51,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1204504089, now seen corresponding path program 20 times [2021-10-13 19:59:51,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 19:59:51,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473342140] [2021-10-13 19:59:51,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:59:51,017 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 19:59:51,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 19:59:51,018 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) [2021-10-13 19:59:51,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-13 19:59:52,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:59:52,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:59:52,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 19:59:52,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:59:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:57,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 19:59:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:59:58,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 19:59:58,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473342140] [2021-10-13 19:59:58,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473342140] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 19:59:58,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:59:58,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-13 19:59:58,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255541929] [2021-10-13 19:59:58,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 19:59:58,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 19:59:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 19:59:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=171, Unknown=2, NotChecked=0, Total=240 [2021-10-13 19:59:58,049 INFO L87 Difference]: Start difference. First operand 32030 states and 200300 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:27,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:00:27,350 INFO L93 Difference]: Finished difference Result 37910 states and 225706 transitions. [2021-10-13 20:00:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 20:00:27,351 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 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 26 [2021-10-13 20:00:27,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:00:27,770 INFO L225 Difference]: With dead ends: 37910 [2021-10-13 20:00:27,770 INFO L226 Difference]: Without dead ends: 37880 [2021-10-13 20:00:27,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 25143.4ms TimeCoverageRelationStatistics Valid=327, Invalid=998, Unknown=7, NotChecked=0, Total=1332 [2021-10-13 20:00:27,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37880 states. [2021-10-13 20:00:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37880 to 32050. [2021-10-13 20:00:28,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32050 states, 32049 states have (on average 6.250647446098162) internal successors, (200327), 32049 states have internal predecessors, (200327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32050 states to 32050 states and 200327 transitions. [2021-10-13 20:00:29,551 INFO L78 Accepts]: Start accepts. Automaton has 32050 states and 200327 transitions. Word has length 26 [2021-10-13 20:00:29,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:00:29,551 INFO L470 AbstractCegarLoop]: Abstraction has 32050 states and 200327 transitions. [2021-10-13 20:00:29,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:29,552 INFO L276 IsEmpty]: Start isEmpty. Operand 32050 states and 200327 transitions. [2021-10-13 20:00:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:00:29,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:00:29,704 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:00:29,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-13 20:00:29,917 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 [2021-10-13 20:00:29,918 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:00:29,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:00:29,919 INFO L82 PathProgramCache]: Analyzing trace with hash -327830203, now seen corresponding path program 21 times [2021-10-13 20:00:29,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:00:29,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474987256] [2021-10-13 20:00:29,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:00:29,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:00:29,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:00:29,921 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) [2021-10-13 20:00:29,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-13 20:00:31,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:00:31,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:00:31,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:00:31,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:00:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:31,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:00:32,151 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:32,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:00:32,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474987256] [2021-10-13 20:00:32,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474987256] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:00:32,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:00:32,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 20:00:32,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441872578] [2021-10-13 20:00:32,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:00:32,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:00:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:00:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:00:32,153 INFO L87 Difference]: Start difference. First operand 32050 states and 200327 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:36,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:00:36,140 INFO L93 Difference]: Finished difference Result 48322 states and 280261 transitions. [2021-10-13 20:00:36,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 20:00:36,141 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:00:36,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:00:36,524 INFO L225 Difference]: With dead ends: 48322 [2021-10-13 20:00:36,524 INFO L226 Difference]: Without dead ends: 48280 [2021-10-13 20:00:36,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1584.7ms TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2021-10-13 20:00:36,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48280 states. [2021-10-13 20:00:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48280 to 35900. [2021-10-13 20:00:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35900 states, 35899 states have (on average 6.16733056631104) internal successors, (221401), 35899 states have internal predecessors, (221401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35900 states to 35900 states and 221401 transitions. [2021-10-13 20:00:38,906 INFO L78 Accepts]: Start accepts. Automaton has 35900 states and 221401 transitions. Word has length 26 [2021-10-13 20:00:38,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:00:38,906 INFO L470 AbstractCegarLoop]: Abstraction has 35900 states and 221401 transitions. [2021-10-13 20:00:38,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 35900 states and 221401 transitions. [2021-10-13 20:00:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:00:39,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:00:39,053 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:00:39,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-13 20:00:39,253 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 [2021-10-13 20:00:39,254 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:00:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:00:39,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1301720775, now seen corresponding path program 22 times [2021-10-13 20:00:39,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:00:39,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633299231] [2021-10-13 20:00:39,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:00:39,256 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:00:39,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:00:39,257 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) [2021-10-13 20:00:39,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-13 20:00:40,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:00:40,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:00:40,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:00:40,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:00:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:40,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:00:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:41,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:00:41,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633299231] [2021-10-13 20:00:41,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633299231] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:00:41,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:00:41,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-13 20:00:41,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515139343] [2021-10-13 20:00:41,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:00:41,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:00:41,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:00:41,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:00:41,544 INFO L87 Difference]: Start difference. First operand 35900 states and 221401 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:50,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:00:50,244 INFO L93 Difference]: Finished difference Result 59136 states and 337547 transitions. [2021-10-13 20:00:50,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 20:00:50,245 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:00:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:00:50,729 INFO L225 Difference]: With dead ends: 59136 [2021-10-13 20:00:50,729 INFO L226 Difference]: Without dead ends: 59108 [2021-10-13 20:00:50,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1652.9ms TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 20:00:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59108 states. [2021-10-13 20:00:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59108 to 36530. [2021-10-13 20:00:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36530 states, 36529 states have (on average 6.233759478770292) internal successors, (227713), 36529 states have internal predecessors, (227713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36530 states to 36530 states and 227713 transitions. [2021-10-13 20:00:53,441 INFO L78 Accepts]: Start accepts. Automaton has 36530 states and 227713 transitions. Word has length 26 [2021-10-13 20:00:53,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:00:53,441 INFO L470 AbstractCegarLoop]: Abstraction has 36530 states and 227713 transitions. [2021-10-13 20:00:53,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:00:53,441 INFO L276 IsEmpty]: Start isEmpty. Operand 36530 states and 227713 transitions. [2021-10-13 20:00:53,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:00:53,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:00:53,632 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:00:53,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2021-10-13 20:00:53,846 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 [2021-10-13 20:00:53,846 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:00:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:00:53,847 INFO L82 PathProgramCache]: Analyzing trace with hash 974610252, now seen corresponding path program 23 times [2021-10-13 20:00:53,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:00:53,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036795734] [2021-10-13 20:00:53,848 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:00:53,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:00:53,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:00:53,849 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) [2021-10-13 20:00:53,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-13 20:00:55,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 20:00:55,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:00:55,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:00:55,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:00:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:55,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:00:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:00:56,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:00:56,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036795734] [2021-10-13 20:00:56,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036795734] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:00:56,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:00:56,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 20:00:56,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814082307] [2021-10-13 20:00:56,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:00:56,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:00:56,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:00:56,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:00:56,018 INFO L87 Difference]: Start difference. First operand 36530 states and 227713 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:05,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:01:05,952 INFO L93 Difference]: Finished difference Result 58452 states and 333424 transitions. [2021-10-13 20:01:05,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 20:01:05,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 20:01:05,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:01:06,405 INFO L225 Difference]: With dead ends: 58452 [2021-10-13 20:01:06,405 INFO L226 Difference]: Without dead ends: 58408 [2021-10-13 20:01:06,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 3062.0ms TimeCoverageRelationStatistics Valid=132, Invalid=569, Unknown=1, NotChecked=0, Total=702 [2021-10-13 20:01:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58408 states. [2021-10-13 20:01:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58408 to 38642. [2021-10-13 20:01:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38642 states, 38641 states have (on average 6.275613985145312) internal successors, (242496), 38641 states have internal predecessors, (242496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38642 states to 38642 states and 242496 transitions. [2021-10-13 20:01:09,303 INFO L78 Accepts]: Start accepts. Automaton has 38642 states and 242496 transitions. Word has length 26 [2021-10-13 20:01:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:01:09,303 INFO L470 AbstractCegarLoop]: Abstraction has 38642 states and 242496 transitions. [2021-10-13 20:01:09,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 38642 states and 242496 transitions. [2021-10-13 20:01:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:01:09,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:01:09,455 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:01:09,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-13 20:01:09,655 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 [2021-10-13 20:01:09,657 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:01:09,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:01:09,657 INFO L82 PathProgramCache]: Analyzing trace with hash -854261307, now seen corresponding path program 24 times [2021-10-13 20:01:09,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:01:09,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642089243] [2021-10-13 20:01:09,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:01:09,658 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:01:09,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:01:09,661 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) [2021-10-13 20:01:09,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-13 20:01:11,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 20:01:11,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:01:11,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:01:11,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:01:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:11,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:01:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:12,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:01:12,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642089243] [2021-10-13 20:01:12,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642089243] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:01:12,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:01:12,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 20:01:12,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019253362] [2021-10-13 20:01:12,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:01:12,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:01:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:01:12,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:01:12,139 INFO L87 Difference]: Start difference. First operand 38642 states and 242496 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:16,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:01:16,132 INFO L93 Difference]: Finished difference Result 57542 states and 332203 transitions. [2021-10-13 20:01:16,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 20:01:16,133 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 20:01:16,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:01:16,583 INFO L225 Difference]: With dead ends: 57542 [2021-10-13 20:01:16,583 INFO L226 Difference]: Without dead ends: 57542 [2021-10-13 20:01:16,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 438.0ms TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:01:16,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57542 states. [2021-10-13 20:01:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57542 to 38642. [2021-10-13 20:01:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38642 states, 38641 states have (on average 6.275613985145312) internal successors, (242496), 38641 states have internal predecessors, (242496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38642 states to 38642 states and 242496 transitions. [2021-10-13 20:01:19,530 INFO L78 Accepts]: Start accepts. Automaton has 38642 states and 242496 transitions. Word has length 26 [2021-10-13 20:01:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:01:19,530 INFO L470 AbstractCegarLoop]: Abstraction has 38642 states and 242496 transitions. [2021-10-13 20:01:19,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 38642 states and 242496 transitions. [2021-10-13 20:01:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:01:19,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:01:19,747 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:01:19,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-13 20:01:19,947 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 [2021-10-13 20:01:19,948 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:01:19,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:01:19,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1643754630, now seen corresponding path program 25 times [2021-10-13 20:01:19,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:01:19,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227074444] [2021-10-13 20:01:19,950 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:01:19,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:01:19,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:01:19,951 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) [2021-10-13 20:01:19,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-13 20:01:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:01:21,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:01:21,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:01:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:21,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:01:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:21,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:01:21,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227074444] [2021-10-13 20:01:21,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227074444] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:01:21,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:01:21,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 20:01:21,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128217085] [2021-10-13 20:01:21,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:01:21,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:01:21,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:01:21,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:01:21,935 INFO L87 Difference]: Start difference. First operand 38642 states and 242496 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:01:30,656 INFO L93 Difference]: Finished difference Result 57350 states and 329252 transitions. [2021-10-13 20:01:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 20:01:30,657 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-13 20:01:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:01:31,125 INFO L225 Difference]: With dead ends: 57350 [2021-10-13 20:01:31,126 INFO L226 Difference]: Without dead ends: 57336 [2021-10-13 20:01:31,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1299.8ms TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2021-10-13 20:01:31,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57336 states. [2021-10-13 20:01:33,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57336 to 38060. [2021-10-13 20:01:33,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38060 states, 38059 states have (on average 6.250111668724874) internal successors, (237873), 38059 states have internal predecessors, (237873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:33,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38060 states to 38060 states and 237873 transitions. [2021-10-13 20:01:33,768 INFO L78 Accepts]: Start accepts. Automaton has 38060 states and 237873 transitions. Word has length 26 [2021-10-13 20:01:33,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:01:33,769 INFO L470 AbstractCegarLoop]: Abstraction has 38060 states and 237873 transitions. [2021-10-13 20:01:33,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand 38060 states and 237873 transitions. [2021-10-13 20:01:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 20:01:33,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:01:33,909 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:01:33,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-13 20:01:34,110 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 [2021-10-13 20:01:34,110 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:01:34,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:01:34,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2089571648, now seen corresponding path program 30 times [2021-10-13 20:01:34,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:01:34,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433270602] [2021-10-13 20:01:34,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:01:34,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:01:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:01:34,113 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) [2021-10-13 20:01:34,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-13 20:01:36,018 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:01:36,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:01:36,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:01:36,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:01:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:36,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:01:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:37,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:01:37,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433270602] [2021-10-13 20:01:37,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433270602] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:01:37,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:01:37,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 20:01:37,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41557048] [2021-10-13 20:01:37,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 20:01:37,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:01:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 20:01:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:01:37,220 INFO L87 Difference]: Start difference. First operand 38060 states and 237873 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:42,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:01:42,593 INFO L93 Difference]: Finished difference Result 38886 states and 240770 transitions. [2021-10-13 20:01:42,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 20:01:42,593 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 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 27 [2021-10-13 20:01:42,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:01:42,866 INFO L225 Difference]: With dead ends: 38886 [2021-10-13 20:01:42,866 INFO L226 Difference]: Without dead ends: 38856 [2021-10-13 20:01:42,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 623.7ms TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:01:42,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38856 states. [2021-10-13 20:01:44,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38856 to 38218. [2021-10-13 20:01:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38218 states, 38217 states have (on average 6.2430070387523875) internal successors, (238589), 38217 states have internal predecessors, (238589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38218 states to 38218 states and 238589 transitions. [2021-10-13 20:01:45,101 INFO L78 Accepts]: Start accepts. Automaton has 38218 states and 238589 transitions. Word has length 27 [2021-10-13 20:01:45,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:01:45,101 INFO L470 AbstractCegarLoop]: Abstraction has 38218 states and 238589 transitions. [2021-10-13 20:01:45,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:01:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand 38218 states and 238589 transitions. [2021-10-13 20:01:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 20:01:45,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:01:45,361 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:01:45,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-13 20:01:45,576 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 [2021-10-13 20:01:45,577 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:01:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:01:45,577 INFO L82 PathProgramCache]: Analyzing trace with hash 739968090, now seen corresponding path program 31 times [2021-10-13 20:01:45,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:01:45,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016527270] [2021-10-13 20:01:45,579 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:01:45,579 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:01:45,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:01:45,580 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) [2021-10-13 20:01:45,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-13 20:01:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:01:46,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:01:46,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:01:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:49,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:01:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:01:50,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:01:50,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016527270] [2021-10-13 20:01:50,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016527270] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:01:50,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:01:50,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 20:01:50,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294989610] [2021-10-13 20:01:50,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 20:01:50,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:01:50,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 20:01:50,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=191, Unknown=1, NotChecked=0, Total=240 [2021-10-13 20:01:50,024 INFO L87 Difference]: Start difference. First operand 38218 states and 238589 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:24,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:02:24,496 INFO L93 Difference]: Finished difference Result 39304 states and 242587 transitions. [2021-10-13 20:02:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 20:02:24,497 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 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 27 [2021-10-13 20:02:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:02:24,739 INFO L225 Difference]: With dead ends: 39304 [2021-10-13 20:02:24,739 INFO L226 Difference]: Without dead ends: 39274 [2021-10-13 20:02:24,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2520.5ms TimeCoverageRelationStatistics Valid=48, Invalid=191, Unknown=1, NotChecked=0, Total=240 [2021-10-13 20:02:25,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39274 states. [2021-10-13 20:02:26,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39274 to 38566. [2021-10-13 20:02:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38566 states, 38565 states have (on average 6.235005834305718) internal successors, (240453), 38565 states have internal predecessors, (240453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38566 states to 38566 states and 240453 transitions. [2021-10-13 20:02:27,075 INFO L78 Accepts]: Start accepts. Automaton has 38566 states and 240453 transitions. Word has length 27 [2021-10-13 20:02:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:02:27,076 INFO L470 AbstractCegarLoop]: Abstraction has 38566 states and 240453 transitions. [2021-10-13 20:02:27,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 38566 states and 240453 transitions. [2021-10-13 20:02:27,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 20:02:27,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:02:27,214 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:02:27,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Ended with exit code 0 [2021-10-13 20:02:27,414 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 [2021-10-13 20:02:27,415 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:02:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:02:27,416 INFO L82 PathProgramCache]: Analyzing trace with hash -884486997, now seen corresponding path program 32 times [2021-10-13 20:02:27,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:02:27,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232686679] [2021-10-13 20:02:27,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:02:27,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:02:27,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:02:27,418 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) [2021-10-13 20:02:27,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-13 20:02:29,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:02:29,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:02:29,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 20:02:29,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:02:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:02:29,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:02:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:02:30,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:02:30,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232686679] [2021-10-13 20:02:30,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232686679] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:02:30,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:02:30,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 20:02:30,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249656784] [2021-10-13 20:02:30,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 20:02:30,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:02:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 20:02:30,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:02:30,101 INFO L87 Difference]: Start difference. First operand 38566 states and 240453 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:02:54,982 INFO L93 Difference]: Finished difference Result 45740 states and 271942 transitions. [2021-10-13 20:02:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 20:02:54,984 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 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 27 [2021-10-13 20:02:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:02:55,334 INFO L225 Difference]: With dead ends: 45740 [2021-10-13 20:02:55,334 INFO L226 Difference]: Without dead ends: 45338 [2021-10-13 20:02:55,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3001.8ms TimeCoverageRelationStatistics Valid=131, Invalid=518, Unknown=1, NotChecked=0, Total=650 [2021-10-13 20:02:55,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45338 states. [2021-10-13 20:02:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45338 to 38860. [2021-10-13 20:02:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38860 states, 38859 states have (on average 6.252399701484856) internal successors, (242962), 38859 states have internal predecessors, (242962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38860 states to 38860 states and 242962 transitions. [2021-10-13 20:02:57,753 INFO L78 Accepts]: Start accepts. Automaton has 38860 states and 242962 transitions. Word has length 27 [2021-10-13 20:02:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:02:57,754 INFO L470 AbstractCegarLoop]: Abstraction has 38860 states and 242962 transitions. [2021-10-13 20:02:57,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:02:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 38860 states and 242962 transitions. [2021-10-13 20:02:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 20:02:57,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:02:57,995 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:02:58,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-13 20:02:58,205 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 [2021-10-13 20:02:58,205 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-13 20:02:58,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:02:58,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1166556336, now seen corresponding path program 33 times [2021-10-13 20:02:58,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:02:58,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784234962] [2021-10-13 20:02:58,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:02:58,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:02:58,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:02:58,209 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) [2021-10-13 20:02:58,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-13 20:02:59,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:02:59,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:02:59,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:02:59,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:03:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:03:02,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:03:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:03:02,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:03:02,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784234962] [2021-10-13 20:03:02,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784234962] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:03:02,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:03:02,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 20:03:02,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838371206] [2021-10-13 20:03:02,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 20:03:02,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:03:02,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 20:03:02,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2021-10-13 20:03:02,908 INFO L87 Difference]: Start difference. First operand 38860 states and 242962 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:03:13,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:03:13,976 INFO L93 Difference]: Finished difference Result 40205 states and 247569 transitions. [2021-10-13 20:03:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 20:03:13,976 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 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 27 [2021-10-13 20:03:13,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:03:14,552 INFO L225 Difference]: With dead ends: 40205 [2021-10-13 20:03:14,553 INFO L226 Difference]: Without dead ends: 40160 [2021-10-13 20:03:14,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 6565.7ms TimeCoverageRelationStatistics Valid=56, Invalid=214, Unknown=2, NotChecked=0, Total=272 [2021-10-13 20:03:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40160 states. Received shutdown request... [2021-10-13 20:03:14,706 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:03:14,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-13 20:03:14,728 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 20:03:14,729 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 [2021-10-13 20:03:14,917 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 [2021-10-13 20:03:14,917 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2021-10-13 20:03:14,919 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 20:03:14,920 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 20:03:14,920 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 20:03:14,920 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 20:03:14,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 20:03:14,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 20:03:14,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 20:03:14,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 20:03:14,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 20:03:14,921 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 20:03:14,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 20:03:14,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 20:03:14,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 20:03:14,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 20:03:14,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 20:03:14,922 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 20:03:14,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:03:14,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 20:03:14,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 20:03:14,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 20:03:14,923 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 20:03:14,927 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 20:03:14,928 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 20:03:14,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:03:14 BasicIcfg [2021-10-13 20:03:14,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 20:03:14,930 INFO L168 Benchmark]: Toolchain (without parser) took 788061.27 ms. Allocated memory was 151.0 MB in the beginning and 6.6 GB in the end (delta: 6.5 GB). Free memory was 124.9 MB in the beginning and 831.0 MB in the end (delta: -706.1 MB). Peak memory consumption was 6.0 GB. Max. memory is 8.0 GB. [2021-10-13 20:03:14,931 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 20:03:14,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.85 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 113.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-13 20:03:14,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.48 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 111.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 20:03:14,932 INFO L168 Benchmark]: Boogie Preprocessor took 81.96 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 110.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 20:03:14,932 INFO L168 Benchmark]: RCFGBuilder took 877.07 ms. Allocated memory is still 151.0 MB. Free memory was 110.2 MB in the beginning and 128.5 MB in the end (delta: -18.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2021-10-13 20:03:14,932 INFO L168 Benchmark]: TraceAbstraction took 786488.27 ms. Allocated memory was 151.0 MB in the beginning and 6.6 GB in the end (delta: 6.5 GB). Free memory was 128.0 MB in the beginning and 831.0 MB in the end (delta: -703.0 MB). Peak memory consumption was 6.0 GB. Max. memory is 8.0 GB. [2021-10-13 20:03:14,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 508.85 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 113.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 84.48 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 111.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.96 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 110.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 877.07 ms. Allocated memory is still 151.0 MB. Free memory was 110.2 MB in the beginning and 128.5 MB in the end (delta: -18.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 786488.27 ms. Allocated memory was 151.0 MB in the beginning and 6.6 GB in the end (delta: 6.5 GB). Free memory was 128.0 MB in the beginning and 831.0 MB in the end (delta: -703.0 MB). Peak memory consumption was 6.0 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19453.6ms, 152 PlacesBefore, 56 PlacesAfterwards, 149 TransitionsBefore, 47 TransitionsAfterwards, 2736 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 144 TotalNumberOfCompositions, 3172 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3172, positive: 3172, positive conditional: 0, positive unconditional: 3172, 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: 1802, positive: 1802, positive conditional: 0, positive unconditional: 1802, 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: 1802, positive: 1802, positive conditional: 0, positive unconditional: 1802, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3172, positive: 1370, positive conditional: 0, positive unconditional: 1370, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1802, unknown conditional: 0, unknown unconditional: 1802] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 116, Positive conditional cache size: 0, Positive unconditional cache size: 116, 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: 104]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 176 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 786250.0ms, OverallIterations: 90, TraceHistogramMax: 4, EmptinessCheckTime: 5645.0ms, AutomataDifference: 502836.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19553.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6548 SDtfs, 19406 SDslu, 40070 SDs, 0 SdLazy, 36787 SolverSat, 1565 SolverUnsat, 92 SolverUnknown, 0 SolverNotchecked, 325395.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4584 GetRequests, 3071 SyntacticMatches, 0 SemanticMatches, 1513 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5421 ImplicationChecksByTransitivity, 193694.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38860occurred in iteration=89, InterpolantAutomatonStates: 1436, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 60678.1ms AutomataMinimizationTime, 90 MinimizatonAttempts, 390596 StatesRemovedByMinimization, 79 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 813.2ms SsaConstructionTime, 14483.2ms SatisfiabilityAnalysisTime, 110904.7ms InterpolantComputationTime, 2069 NumberOfCodeBlocks, 2069 NumberOfCodeBlocksAsserted, 169 NumberOfCheckSat, 3958 ConstructedInterpolants, 497 QuantifiedInterpolants, 41221 SizeOfPredicates, 411 NumberOfNonLiveVariables, 10056 ConjunctsInSsa, 832 ConjunctsInUnsatCore, 180 InterpolantComputations, 26 PerfectInterpolantSequences, 154/986 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