/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:48:00,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:48:00,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:48:00,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:48:00,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 15:48:00,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 15:48:00,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 15:48:00,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 15:48:00,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 15:48:00,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 15:48:00,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 15:48:00,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 15:48:00,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 15:48:00,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 15:48:00,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 15:48:00,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 15:48:00,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 15:48:00,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:48:00,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:48:00,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:48:00,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:48:00,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:48:00,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:48:00,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:48:00,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:48:00,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:48:00,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:48:00,361 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:48:00,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:48:00,362 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:48:00,362 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:48:00,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:48:00,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:48:00,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:48:00,363 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:48:00,364 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:48:00,364 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:48:00,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:48:00,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:48:00,365 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:48:00,365 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:48:00,365 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:48:00,365 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:48:00,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:48:00,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:48:00,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:48:00,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:48:00,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:48:00,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:48:00,367 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:48:00,367 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:48:00,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:48:00,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:48:00,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:48:00,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:48:00,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:48:00,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:48:00,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:48:00,871 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:48:00,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2021-10-07 15:48:00,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c830cebad/d04a591ecd204f3c8c577b9ce6aa7476/FLAG63bd63878 [2021-10-07 15:48:01,581 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:48:01,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2021-10-07 15:48:01,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c830cebad/d04a591ecd204f3c8c577b9ce6aa7476/FLAG63bd63878 [2021-10-07 15:48:01,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c830cebad/d04a591ecd204f3c8c577b9ce6aa7476 [2021-10-07 15:48:01,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:48:01,947 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:48:01,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:48:01,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:48:01,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:48:01,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:48:01" (1/1) ... [2021-10-07 15:48:01,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a87586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:01, skipping insertion in model container [2021-10-07 15:48:01,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:48:01" (1/1) ... [2021-10-07 15:48:01,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:48:01,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:48:02,184 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2722,2735] [2021-10-07 15:48:02,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:48:02,230 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 15:48:02,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:48:02,282 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2722,2735] [2021-10-07 15:48:02,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:48:02,304 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:48:02,344 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2722,2735] [2021-10-07 15:48:02,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:48:02,383 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:48:02,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02 WrapperNode [2021-10-07 15:48:02,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:48:02,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:48:02,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:48:02,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:48:02,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02" (1/1) ... [2021-10-07 15:48:02,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02" (1/1) ... [2021-10-07 15:48:02,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:48:02,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:48:02,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:48:02,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:48:02,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02" (1/1) ... [2021-10-07 15:48:02,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02" (1/1) ... [2021-10-07 15:48:02,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02" (1/1) ... [2021-10-07 15:48:02,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02" (1/1) ... [2021-10-07 15:48:02,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02" (1/1) ... [2021-10-07 15:48:02,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02" (1/1) ... [2021-10-07 15:48:02,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02" (1/1) ... [2021-10-07 15:48:02,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:48:02,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:48:02,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:48:02,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:48:02,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02" (1/1) ... [2021-10-07 15:48:02,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:48:02,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:48:02,605 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) [2021-10-07 15:48:02,626 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 [2021-10-07 15:48:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:48:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:48:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:48:02,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:48:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:48:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:48:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 15:48:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:48:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:48:02,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:48:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:48:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:48:02,675 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:48:03,472 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:48:03,472 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-07 15:48:03,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:03 BoogieIcfgContainer [2021-10-07 15:48:03,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:48:03,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:48:03,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:48:03,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:48:03,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:48:01" (1/3) ... [2021-10-07 15:48:03,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657620f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:03, skipping insertion in model container [2021-10-07 15:48:03,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:02" (2/3) ... [2021-10-07 15:48:03,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657620f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:03, skipping insertion in model container [2021-10-07 15:48:03,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:03" (3/3) ... [2021-10-07 15:48:03,495 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2021-10-07 15:48:03,508 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:48:03,508 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2021-10-07 15:48:03,509 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:48:03,611 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,611 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,612 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,612 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,612 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,613 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,613 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,613 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,613 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,614 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,615 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,616 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,616 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,616 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,616 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,619 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,619 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,619 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,619 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,619 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,621 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,621 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,621 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,622 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,622 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,622 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,622 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,622 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,623 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,623 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,623 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,623 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,625 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,625 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,625 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,627 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,627 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,627 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,627 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,628 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,628 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,629 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,629 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,630 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,630 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,634 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,635 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,635 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,635 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,641 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,641 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,641 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:03,646 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 15:48:03,705 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:48:03,714 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 [2021-10-07 15:48:03,714 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-07 15:48:03,737 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:48:03,751 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 180 transitions, 376 flow [2021-10-07 15:48:03,755 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 180 transitions, 376 flow [2021-10-07 15:48:03,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 175 places, 180 transitions, 376 flow [2021-10-07 15:48:03,844 INFO L129 PetriNetUnfolder]: 12/178 cut-off events. [2021-10-07 15:48:03,844 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 15:48:03,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 12/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 264 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2021-10-07 15:48:03,865 INFO L116 LiptonReduction]: Number of co-enabled transitions 2700 [2021-10-07 15:48:26,752 INFO L131 LiptonReduction]: Checked pairs total: 3752 [2021-10-07 15:48:26,752 INFO L133 LiptonReduction]: Total number of compositions: 201 [2021-10-07 15:48:26,765 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 44 transitions, 104 flow [2021-10-07 15:48:26,798 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 402 states, 222 states have (on average 4.824324324324325) internal successors, (1071), 401 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 402 states, 222 states have (on average 4.824324324324325) internal successors, (1071), 401 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:48:26,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:26,808 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:48:26,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:26,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:26,815 INFO L82 PathProgramCache]: Analyzing trace with hash 22153, now seen corresponding path program 1 times [2021-10-07 15:48:26,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:26,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452034978] [2021-10-07 15:48:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:26,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:26,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:26,836 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) [2021-10-07 15:48:26,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:48:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:26,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:48:26,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:27,227 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:48:27,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-07 15:48:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:27,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:27,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:27,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452034978] [2021-10-07 15:48:27,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452034978] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:27,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:27,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:48:27,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921895461] [2021-10-07 15:48:27,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:48:27,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:27,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:48:27,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:27,798 INFO L87 Difference]: Start difference. First operand has 402 states, 222 states have (on average 4.824324324324325) internal successors, (1071), 401 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:27,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:27,946 INFO L93 Difference]: Finished difference Result 144 states and 373 transitions. [2021-10-07 15:48:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:27,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 15:48:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:27,961 INFO L225 Difference]: With dead ends: 144 [2021-10-07 15:48:27,961 INFO L226 Difference]: Without dead ends: 144 [2021-10-07 15:48:27,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-07 15:48:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-07 15:48:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 102 states have (on average 3.656862745098039) internal successors, (373), 143 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 373 transitions. [2021-10-07 15:48:28,015 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 373 transitions. Word has length 2 [2021-10-07 15:48:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:28,016 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 373 transitions. [2021-10-07 15:48:28,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 373 transitions. [2021-10-07 15:48:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:48:28,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:28,017 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:48:28,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:28,218 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 [2021-10-07 15:48:28,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:28,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:28,220 INFO L82 PathProgramCache]: Analyzing trace with hash 22154, now seen corresponding path program 1 times [2021-10-07 15:48:28,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:28,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171324635] [2021-10-07 15:48:28,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:28,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:28,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:28,222 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) [2021-10-07 15:48:28,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:48:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:28,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:28,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:28,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:28,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:28,477 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:48:28,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:48:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:28,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:28,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:28,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171324635] [2021-10-07 15:48:28,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171324635] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:28,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:28,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:48:28,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654844880] [2021-10-07 15:48:28,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:28,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:28,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:28,677 INFO L87 Difference]: Start difference. First operand 144 states and 373 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:29,169 INFO L93 Difference]: Finished difference Result 287 states and 748 transitions. [2021-10-07 15:48:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:48:29,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 15:48:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:29,176 INFO L225 Difference]: With dead ends: 287 [2021-10-07 15:48:29,177 INFO L226 Difference]: Without dead ends: 287 [2021-10-07 15:48:29,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:29,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-07 15:48:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 146. [2021-10-07 15:48:29,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 104 states have (on average 3.6634615384615383) internal successors, (381), 145 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 381 transitions. [2021-10-07 15:48:29,197 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 381 transitions. Word has length 2 [2021-10-07 15:48:29,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:29,198 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 381 transitions. [2021-10-07 15:48:29,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,198 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 381 transitions. [2021-10-07 15:48:29,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:48:29,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:29,199 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:48:29,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:29,411 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 [2021-10-07 15:48:29,412 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:29,413 INFO L82 PathProgramCache]: Analyzing trace with hash 22331, now seen corresponding path program 1 times [2021-10-07 15:48:29,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:29,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218153588] [2021-10-07 15:48:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:29,415 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:29,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:29,416 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) [2021-10-07 15:48:29,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:48:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:29,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:48:29,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:29,654 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:48:29,655 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 6 case distinctions, treesize of input 88 treesize of output 121 [2021-10-07 15:48:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:31,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:31,288 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:31,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218153588] [2021-10-07 15:48:31,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218153588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:31,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:31,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:48:31,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196967564] [2021-10-07 15:48:31,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:31,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:31,291 INFO L87 Difference]: Start difference. First operand 146 states and 381 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:31,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:31,437 INFO L93 Difference]: Finished difference Result 121 states and 302 transitions. [2021-10-07 15:48:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:31,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 15:48:31,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:31,440 INFO L225 Difference]: With dead ends: 121 [2021-10-07 15:48:31,440 INFO L226 Difference]: Without dead ends: 121 [2021-10-07 15:48:31,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-07 15:48:31,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-10-07 15:48:31,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 89 states have (on average 3.393258426966292) internal successors, (302), 120 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 302 transitions. [2021-10-07 15:48:31,451 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 302 transitions. Word has length 2 [2021-10-07 15:48:31,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:31,451 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 302 transitions. [2021-10-07 15:48:31,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:31,452 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 302 transitions. [2021-10-07 15:48:31,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:48:31,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:31,452 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:48:31,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:31,664 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 [2021-10-07 15:48:31,665 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:31,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:31,666 INFO L82 PathProgramCache]: Analyzing trace with hash 22332, now seen corresponding path program 1 times [2021-10-07 15:48:31,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:31,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663787981] [2021-10-07 15:48:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:31,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:31,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:31,669 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) [2021-10-07 15:48:31,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:48:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:31,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:48:31,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:31,968 INFO L354 Elim1Store]: treesize reduction 151, result has 21.8 percent of original size [2021-10-07 15:48:31,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 74 [2021-10-07 15:48:31,982 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 205 treesize of output 197 [2021-10-07 15:48:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:32,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:32,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:32,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:32,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663787981] [2021-10-07 15:48:32,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663787981] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:32,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:32,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:48:32,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652608462] [2021-10-07 15:48:32,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:32,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:32,560 INFO L87 Difference]: Start difference. First operand 121 states and 302 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:32,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:32,730 INFO L93 Difference]: Finished difference Result 96 states and 223 transitions. [2021-10-07 15:48:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:32,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 15:48:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:32,733 INFO L225 Difference]: With dead ends: 96 [2021-10-07 15:48:32,733 INFO L226 Difference]: Without dead ends: 96 [2021-10-07 15:48:32,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:32,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-07 15:48:32,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-10-07 15:48:32,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 3.0135135135135136) internal successors, (223), 95 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:32,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 223 transitions. [2021-10-07 15:48:32,752 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 223 transitions. Word has length 2 [2021-10-07 15:48:32,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:32,752 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 223 transitions. [2021-10-07 15:48:32,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:32,753 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 223 transitions. [2021-10-07 15:48:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:48:32,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:32,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 15:48:32,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:32,968 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 [2021-10-07 15:48:32,969 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash 21474153, now seen corresponding path program 1 times [2021-10-07 15:48:32,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:32,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137386762] [2021-10-07 15:48:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:32,972 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:32,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:32,973 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) [2021-10-07 15:48:32,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:48:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:33,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:48:33,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:33,195 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:48:33,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-07 15:48:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:33,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:33,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:33,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137386762] [2021-10-07 15:48:33,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137386762] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:33,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:33,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:48:33,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867220551] [2021-10-07 15:48:33,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:48:33,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:48:33,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:33,598 INFO L87 Difference]: Start difference. First operand 96 states and 223 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:33,722 INFO L93 Difference]: Finished difference Result 86 states and 202 transitions. [2021-10-07 15:48:33,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:33,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 15:48:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:33,724 INFO L225 Difference]: With dead ends: 86 [2021-10-07 15:48:33,724 INFO L226 Difference]: Without dead ends: 86 [2021-10-07 15:48:33,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-07 15:48:33,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-07 15:48:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 70 states have (on average 2.8857142857142857) internal successors, (202), 85 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 202 transitions. [2021-10-07 15:48:33,730 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 202 transitions. Word has length 4 [2021-10-07 15:48:33,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:33,731 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 202 transitions. [2021-10-07 15:48:33,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 202 transitions. [2021-10-07 15:48:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:48:33,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:33,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 15:48:33,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:33,932 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 [2021-10-07 15:48:33,933 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:33,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:33,934 INFO L82 PathProgramCache]: Analyzing trace with hash 21474059, now seen corresponding path program 1 times [2021-10-07 15:48:33,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:33,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530052316] [2021-10-07 15:48:33,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:33,936 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:33,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:33,939 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) [2021-10-07 15:48:33,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:48:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:33,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:48:33,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:34,140 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:48:34,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-07 15:48:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:34,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:34,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:34,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:34,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530052316] [2021-10-07 15:48:34,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530052316] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:34,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:34,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-07 15:48:34,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143400399] [2021-10-07 15:48:34,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:34,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:34,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:34,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:34,591 INFO L87 Difference]: Start difference. First operand 86 states and 202 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:34,746 INFO L93 Difference]: Finished difference Result 62 states and 143 transitions. [2021-10-07 15:48:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:48:34,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 15:48:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:34,749 INFO L225 Difference]: With dead ends: 62 [2021-10-07 15:48:34,749 INFO L226 Difference]: Without dead ends: 62 [2021-10-07 15:48:34,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:48:34,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-07 15:48:34,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-07 15:48:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 2.69811320754717) internal successors, (143), 61 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 143 transitions. [2021-10-07 15:48:34,760 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 143 transitions. Word has length 4 [2021-10-07 15:48:34,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:34,761 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 143 transitions. [2021-10-07 15:48:34,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 143 transitions. [2021-10-07 15:48:34,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:48:34,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:34,762 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 15:48:34,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:34,962 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 [2021-10-07 15:48:34,963 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:34,964 INFO L82 PathProgramCache]: Analyzing trace with hash 21474155, now seen corresponding path program 1 times [2021-10-07 15:48:34,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:34,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828366558] [2021-10-07 15:48:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:34,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:34,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:34,967 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) [2021-10-07 15:48:34,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:48:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:35,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:48:35,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:35,155 INFO L354 Elim1Store]: treesize reduction 155, result has 19.7 percent of original size [2021-10-07 15:48:35,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 67 [2021-10-07 15:48:35,169 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 515 treesize of output 499 [2021-10-07 15:48:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:35,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:35,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:35,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828366558] [2021-10-07 15:48:35,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828366558] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:35,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:35,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:48:35,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051387918] [2021-10-07 15:48:35,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:35,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:35,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:35,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:35,829 INFO L87 Difference]: Start difference. First operand 62 states and 143 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:35,968 INFO L93 Difference]: Finished difference Result 54 states and 126 transitions. [2021-10-07 15:48:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:35,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 15:48:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:35,969 INFO L225 Difference]: With dead ends: 54 [2021-10-07 15:48:35,970 INFO L226 Difference]: Without dead ends: 54 [2021-10-07 15:48:35,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 194.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-07 15:48:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-07 15:48:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 2.5714285714285716) internal successors, (126), 53 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 126 transitions. [2021-10-07 15:48:35,974 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 126 transitions. Word has length 4 [2021-10-07 15:48:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:35,974 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 126 transitions. [2021-10-07 15:48:35,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 126 transitions. [2021-10-07 15:48:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:48:35,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:35,975 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 15:48:35,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:36,175 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 [2021-10-07 15:48:36,176 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:36,177 INFO L82 PathProgramCache]: Analyzing trace with hash 21474060, now seen corresponding path program 1 times [2021-10-07 15:48:36,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:36,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533033817] [2021-10-07 15:48:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:36,178 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:36,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:36,179 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) [2021-10-07 15:48:36,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:48:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:36,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:48:36,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:36,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:36,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:36,405 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:48:36,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:48:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:36,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:36,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:36,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533033817] [2021-10-07 15:48:36,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533033817] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:36,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:36,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:48:36,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744387303] [2021-10-07 15:48:36,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:36,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:36,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:36,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:48:36,757 INFO L87 Difference]: Start difference. First operand 54 states and 126 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:37,344 INFO L93 Difference]: Finished difference Result 102 states and 259 transitions. [2021-10-07 15:48:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:48:37,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 15:48:37,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:37,346 INFO L225 Difference]: With dead ends: 102 [2021-10-07 15:48:37,346 INFO L226 Difference]: Without dead ends: 102 [2021-10-07 15:48:37,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 324.7ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:48:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-07 15:48:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2021-10-07 15:48:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 2.888888888888889) internal successors, (234), 85 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 234 transitions. [2021-10-07 15:48:37,355 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 234 transitions. Word has length 4 [2021-10-07 15:48:37,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:37,355 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 234 transitions. [2021-10-07 15:48:37,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 234 transitions. [2021-10-07 15:48:37,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:48:37,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:37,356 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 15:48:37,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:37,568 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 [2021-10-07 15:48:37,569 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:37,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:37,570 INFO L82 PathProgramCache]: Analyzing trace with hash 21439434, now seen corresponding path program 1 times [2021-10-07 15:48:37,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:37,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861169494] [2021-10-07 15:48:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:37,571 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:37,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:37,572 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) [2021-10-07 15:48:37,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:48:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:37,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:48:37,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:37,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:37,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:37,841 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:48:37,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:48:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:37,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:38,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:38,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861169494] [2021-10-07 15:48:38,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861169494] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:38,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:38,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:48:38,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743800538] [2021-10-07 15:48:38,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:48:38,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:38,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:48:38,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:48:38,506 INFO L87 Difference]: Start difference. First operand 86 states and 234 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:40,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:40,008 INFO L93 Difference]: Finished difference Result 495 states and 1372 transitions. [2021-10-07 15:48:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:48:40,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 15:48:40,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:40,023 INFO L225 Difference]: With dead ends: 495 [2021-10-07 15:48:40,023 INFO L226 Difference]: Without dead ends: 495 [2021-10-07 15:48:40,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 870.7ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:48:40,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-10-07 15:48:40,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 90. [2021-10-07 15:48:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 2.847058823529412) internal successors, (242), 89 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 242 transitions. [2021-10-07 15:48:40,035 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 242 transitions. Word has length 4 [2021-10-07 15:48:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:40,035 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 242 transitions. [2021-10-07 15:48:40,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:40,036 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 242 transitions. [2021-10-07 15:48:40,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:48:40,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:40,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:48:40,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:40,249 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 [2021-10-07 15:48:40,250 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:40,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:40,251 INFO L82 PathProgramCache]: Analyzing trace with hash -838159588, now seen corresponding path program 1 times [2021-10-07 15:48:40,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:40,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5958805] [2021-10-07 15:48:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:40,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:40,253 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) [2021-10-07 15:48:40,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:48:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:40,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:48:40,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:40,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:40,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:40,488 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:48:40,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:48:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:40,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:40,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:40,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5958805] [2021-10-07 15:48:40,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5958805] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:40,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:40,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:48:40,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519912905] [2021-10-07 15:48:40,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:40,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:40,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:40,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:48:40,958 INFO L87 Difference]: Start difference. First operand 90 states and 242 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:41,410 INFO L93 Difference]: Finished difference Result 152 states and 441 transitions. [2021-10-07 15:48:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:48:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:48:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:41,413 INFO L225 Difference]: With dead ends: 152 [2021-10-07 15:48:41,414 INFO L226 Difference]: Without dead ends: 152 [2021-10-07 15:48:41,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 230.3ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:48:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-07 15:48:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2021-10-07 15:48:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 3.2) internal successors, (400), 129 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 400 transitions. [2021-10-07 15:48:41,421 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 400 transitions. Word has length 6 [2021-10-07 15:48:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:41,421 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 400 transitions. [2021-10-07 15:48:41,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 400 transitions. [2021-10-07 15:48:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:48:41,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:41,423 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:41,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:41,634 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 [2021-10-07 15:48:41,635 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:41,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:41,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1982616124, now seen corresponding path program 1 times [2021-10-07 15:48:41,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:41,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479606610] [2021-10-07 15:48:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:41,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:41,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:41,638 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) [2021-10-07 15:48:41,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:48:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:41,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:48:41,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:48:41,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:41,972 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 15:48:41,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 45 [2021-10-07 15:48:41,978 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 45 treesize of output 43 [2021-10-07 15:48:42,022 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 34 treesize of output 32 [2021-10-07 15:48:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:48:42,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:42,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479606610] [2021-10-07 15:48:42,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479606610] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:42,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:42,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:48:42,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561794016] [2021-10-07 15:48:42,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:42,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:42,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:42,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:48:42,213 INFO L87 Difference]: Start difference. First operand 130 states and 400 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 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) [2021-10-07 15:48:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:42,569 INFO L93 Difference]: Finished difference Result 191 states and 547 transitions. [2021-10-07 15:48:42,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:48:42,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 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 8 [2021-10-07 15:48:42,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:42,572 INFO L225 Difference]: With dead ends: 191 [2021-10-07 15:48:42,573 INFO L226 Difference]: Without dead ends: 191 [2021-10-07 15:48:42,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 187.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:48:42,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-07 15:48:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 169. [2021-10-07 15:48:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 164 states have (on average 3.0853658536585367) internal successors, (506), 168 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:42,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 506 transitions. [2021-10-07 15:48:42,582 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 506 transitions. Word has length 8 [2021-10-07 15:48:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:42,582 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 506 transitions. [2021-10-07 15:48:42,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 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) [2021-10-07 15:48:42,583 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 506 transitions. [2021-10-07 15:48:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:48:42,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:42,584 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2021-10-07 15:48:42,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:42,798 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 [2021-10-07 15:48:42,799 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:42,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:42,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1899509682, now seen corresponding path program 1 times [2021-10-07 15:48:42,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:42,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935134042] [2021-10-07 15:48:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:42,801 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:42,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:42,803 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) [2021-10-07 15:48:42,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:48:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:42,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:48:42,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:42,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:42,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:43,097 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:48:43,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:48:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:43,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:44,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:44,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935134042] [2021-10-07 15:48:44,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935134042] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:44,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:44,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-10-07 15:48:44,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736728949] [2021-10-07 15:48:44,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:48:44,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:48:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:48:44,150 INFO L87 Difference]: Start difference. First operand 169 states and 506 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:49,914 INFO L93 Difference]: Finished difference Result 378 states and 1075 transitions. [2021-10-07 15:48:49,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:48:49,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 15:48:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:49,920 INFO L225 Difference]: With dead ends: 378 [2021-10-07 15:48:49,920 INFO L226 Difference]: Without dead ends: 378 [2021-10-07 15:48:49,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1924.4ms TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:48:49,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-10-07 15:48:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 180. [2021-10-07 15:48:49,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 3.12) internal successors, (546), 179 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:49,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 546 transitions. [2021-10-07 15:48:49,931 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 546 transitions. Word has length 8 [2021-10-07 15:48:49,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:49,931 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 546 transitions. [2021-10-07 15:48:49,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:49,932 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 546 transitions. [2021-10-07 15:48:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:48:49,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:49,933 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-07 15:48:49,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:50,133 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 [2021-10-07 15:48:50,134 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:48:50,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:50,135 INFO L82 PathProgramCache]: Analyzing trace with hash 112053834, now seen corresponding path program 2 times [2021-10-07 15:48:50,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:50,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86696488] [2021-10-07 15:48:50,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:48:50,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:50,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:50,137 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) [2021-10-07 15:48:50,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:48:50,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:50,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:50,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:48:50,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:50,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:50,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:48:50,423 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:48:50,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:48:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:50,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:52,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:52,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86696488] [2021-10-07 15:48:52,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86696488] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:52,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:52,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 15:48:52,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220898216] [2021-10-07 15:48:52,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:48:52,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:48:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:48:52,472 INFO L87 Difference]: Start difference. First operand 180 states and 546 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:00,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:00,746 INFO L93 Difference]: Finished difference Result 1645 states and 5174 transitions. [2021-10-07 15:49:00,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:49:00,748 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 15:49:00,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:00,763 INFO L225 Difference]: With dead ends: 1645 [2021-10-07 15:49:00,763 INFO L226 Difference]: Without dead ends: 1645 [2021-10-07 15:49:00,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5860.1ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:49:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2021-10-07 15:49:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 188. [2021-10-07 15:49:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 3.07103825136612) internal successors, (562), 187 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 562 transitions. [2021-10-07 15:49:00,791 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 562 transitions. Word has length 8 [2021-10-07 15:49:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:00,791 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 562 transitions. [2021-10-07 15:49:00,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 562 transitions. [2021-10-07 15:49:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:49:00,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:00,794 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:00,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:01,006 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 [2021-10-07 15:49:01,007 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:49:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:01,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1049268518, now seen corresponding path program 1 times [2021-10-07 15:49:01,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:01,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150112847] [2021-10-07 15:49:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:01,009 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:01,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:01,010 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) [2021-10-07 15:49:01,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:49:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:01,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:49:01,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:01,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:01,741 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 15:49:01,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 312 treesize of output 172 [2021-10-07 15:49:01,746 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 172 treesize of output 166 [2021-10-07 15:49:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:02,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:02,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150112847] [2021-10-07 15:49:02,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150112847] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:02,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:02,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:49:02,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116322532] [2021-10-07 15:49:02,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:49:02,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:02,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:49:02,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:49:02,687 INFO L87 Difference]: Start difference. First operand 188 states and 562 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:04,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:04,589 INFO L93 Difference]: Finished difference Result 262 states and 716 transitions. [2021-10-07 15:49:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:49:04,590 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have 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 [2021-10-07 15:49:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:04,592 INFO L225 Difference]: With dead ends: 262 [2021-10-07 15:49:04,593 INFO L226 Difference]: Without dead ends: 262 [2021-10-07 15:49:04,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1408.0ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:49:04,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-07 15:49:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2021-10-07 15:49:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 2.9466666666666668) internal successors, (663), 229 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 663 transitions. [2021-10-07 15:49:04,602 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 663 transitions. Word has length 9 [2021-10-07 15:49:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:04,602 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 663 transitions. [2021-10-07 15:49:04,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 663 transitions. [2021-10-07 15:49:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:49:04,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:04,604 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:04,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:04,816 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 [2021-10-07 15:49:04,817 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:49:04,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:04,818 INFO L82 PathProgramCache]: Analyzing trace with hash -2114703492, now seen corresponding path program 2 times [2021-10-07 15:49:04,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:04,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392352248] [2021-10-07 15:49:04,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:49:04,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:04,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:04,821 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) [2021-10-07 15:49:04,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:49:05,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:05,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:05,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 15:49:05,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:05,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:49:05,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:49:05,206 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:49:05,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:49:05,690 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-07 15:49:05,709 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 8 treesize of output 6 [2021-10-07 15:49:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:05,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:07,139 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 9 treesize of output 7 [2021-10-07 15:49:07,173 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 15:49:07,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 333 treesize of output 193 [2021-10-07 15:49:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:09,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:09,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392352248] [2021-10-07 15:49:09,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392352248] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:09,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:09,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:49:09,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506646419] [2021-10-07 15:49:09,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:09,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:09,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:09,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:09,434 INFO L87 Difference]: Start difference. First operand 230 states and 663 transitions. Second operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:15,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:15,621 INFO L93 Difference]: Finished difference Result 364 states and 1033 transitions. [2021-10-07 15:49:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:49:15,624 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 15:49:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:15,628 INFO L225 Difference]: With dead ends: 364 [2021-10-07 15:49:15,628 INFO L226 Difference]: Without dead ends: 364 [2021-10-07 15:49:15,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 5568.3ms TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:49:15,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-10-07 15:49:15,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 310. [2021-10-07 15:49:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 305 states have (on average 3.078688524590164) internal successors, (939), 309 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 939 transitions. [2021-10-07 15:49:15,645 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 939 transitions. Word has length 10 [2021-10-07 15:49:15,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:15,645 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 939 transitions. [2021-10-07 15:49:15,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:15,645 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 939 transitions. [2021-10-07 15:49:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:49:15,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:15,648 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-10-07 15:49:15,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:15,862 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 [2021-10-07 15:49:15,862 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:49:15,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:15,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2097157362, now seen corresponding path program 1 times [2021-10-07 15:49:15,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:15,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027581713] [2021-10-07 15:49:15,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:15,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:15,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:15,865 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) [2021-10-07 15:49:15,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:49:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:16,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 15:49:16,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:16,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:49:16,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:49:16,212 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:49:16,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:49:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:49:16,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:49:17,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:17,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027581713] [2021-10-07 15:49:17,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027581713] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:17,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:17,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:49:17,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107240578] [2021-10-07 15:49:17,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:49:17,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:17,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:49:17,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:49:17,336 INFO L87 Difference]: Start difference. First operand 310 states and 939 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2021-10-07 15:49:26,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:26,159 INFO L93 Difference]: Finished difference Result 862 states and 2460 transitions. [2021-10-07 15:49:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:49:26,160 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 10 [2021-10-07 15:49:26,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:26,168 INFO L225 Difference]: With dead ends: 862 [2021-10-07 15:49:26,168 INFO L226 Difference]: Without dead ends: 862 [2021-10-07 15:49:26,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1656.9ms TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:49:26,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-10-07 15:49:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 598. [2021-10-07 15:49:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 593 states have (on average 3.258010118043845) internal successors, (1932), 597 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1932 transitions. [2021-10-07 15:49:26,192 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1932 transitions. Word has length 10 [2021-10-07 15:49:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:26,193 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 1932 transitions. [2021-10-07 15:49:26,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2021-10-07 15:49:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1932 transitions. [2021-10-07 15:49:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:49:26,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:26,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:26,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:26,407 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 [2021-10-07 15:49:26,407 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:49:26,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:26,408 INFO L82 PathProgramCache]: Analyzing trace with hash -361000918, now seen corresponding path program 1 times [2021-10-07 15:49:26,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:26,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026442880] [2021-10-07 15:49:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:26,410 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:26,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:26,411 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) [2021-10-07 15:49:26,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:49:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:26,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:26,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:26,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:26,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:26,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026442880] [2021-10-07 15:49:26,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026442880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:26,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:26,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:49:26,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968618534] [2021-10-07 15:49:26,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:49:26,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:26,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:49:26,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:49:26,859 INFO L87 Difference]: Start difference. First operand 598 states and 1932 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:27,030 INFO L93 Difference]: Finished difference Result 759 states and 2413 transitions. [2021-10-07 15:49:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:49:27,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 15:49:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:27,038 INFO L225 Difference]: With dead ends: 759 [2021-10-07 15:49:27,038 INFO L226 Difference]: Without dead ends: 741 [2021-10-07 15:49:27,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 73.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:49:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-10-07 15:49:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 589. [2021-10-07 15:49:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 584 states have (on average 3.280821917808219) internal successors, (1916), 588 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 1916 transitions. [2021-10-07 15:49:27,061 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 1916 transitions. Word has length 12 [2021-10-07 15:49:27,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:27,061 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 1916 transitions. [2021-10-07 15:49:27,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 1916 transitions. [2021-10-07 15:49:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:49:27,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:27,079 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:27,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:27,291 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 [2021-10-07 15:49:27,292 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:49:27,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:27,293 INFO L82 PathProgramCache]: Analyzing trace with hash -985988727, now seen corresponding path program 1 times [2021-10-07 15:49:27,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:27,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182107253] [2021-10-07 15:49:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:27,294 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:27,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:27,296 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) [2021-10-07 15:49:27,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:49:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:27,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:49:27,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:27,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:27,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:27,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182107253] [2021-10-07 15:49:27,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182107253] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:27,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:27,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:49:27,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600402167] [2021-10-07 15:49:27,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:49:27,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:27,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:49:27,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:49:27,775 INFO L87 Difference]: Start difference. First operand 589 states and 1916 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:28,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:28,472 INFO L93 Difference]: Finished difference Result 1076 states and 3485 transitions. [2021-10-07 15:49:28,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:49:28,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:49:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:28,482 INFO L225 Difference]: With dead ends: 1076 [2021-10-07 15:49:28,483 INFO L226 Difference]: Without dead ends: 1076 [2021-10-07 15:49:28,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 347.9ms TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:49:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2021-10-07 15:49:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 610. [2021-10-07 15:49:28,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 605 states have (on average 3.2859504132231403) internal successors, (1988), 609 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1988 transitions. [2021-10-07 15:49:28,510 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1988 transitions. Word has length 14 [2021-10-07 15:49:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:28,511 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 1988 transitions. [2021-10-07 15:49:28,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1988 transitions. [2021-10-07 15:49:28,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:49:28,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:28,513 INFO L512 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:28,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-10-07 15:49:28,725 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 [2021-10-07 15:49:28,726 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:49:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:28,726 INFO L82 PathProgramCache]: Analyzing trace with hash 209122748, now seen corresponding path program 3 times [2021-10-07 15:49:28,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:28,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657446738] [2021-10-07 15:49:28,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:49:28,728 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:28,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:28,729 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) [2021-10-07 15:49:28,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:49:29,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:49:29,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:29,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:49:29,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:29,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:49:29,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:49:29,333 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:49:29,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:49:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:49:30,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:32,539 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 15:49:32,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 332 treesize of output 192 [2021-10-07 15:49:32,546 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 192 treesize of output 190 [2021-10-07 15:49:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:49:34,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:34,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657446738] [2021-10-07 15:49:34,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657446738] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:34,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:34,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:49:34,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723279755] [2021-10-07 15:49:34,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:34,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:34,615 INFO L87 Difference]: Start difference. First operand 610 states and 1988 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:49,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:49,240 INFO L93 Difference]: Finished difference Result 877 states and 2678 transitions. [2021-10-07 15:49:49,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:49:49,242 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:49:49,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:49,250 INFO L225 Difference]: With dead ends: 877 [2021-10-07 15:49:49,250 INFO L226 Difference]: Without dead ends: 877 [2021-10-07 15:49:49,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 9805.2ms TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:49:49,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-10-07 15:49:49,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 697. [2021-10-07 15:49:49,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 692 states have (on average 3.222543352601156) internal successors, (2230), 696 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2230 transitions. [2021-10-07 15:49:49,276 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2230 transitions. Word has length 14 [2021-10-07 15:49:49,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:49,277 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 2230 transitions. [2021-10-07 15:49:49,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2230 transitions. [2021-10-07 15:49:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:49:49,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:49,279 INFO L512 BasicCegarLoop]: trace histogram [6, 3, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:49,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:49,493 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 [2021-10-07 15:49:49,494 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:49:49,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:49,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1289691866, now seen corresponding path program 4 times [2021-10-07 15:49:49,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:49,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185707239] [2021-10-07 15:49:49,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:49:49,496 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:49,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:49,497 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) [2021-10-07 15:49:49,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:49:49,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:49:49,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:49,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 15:49:49,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:49,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:49:49,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:49:50,097 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:49:50,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:49:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:49:54,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:58,965 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 15:49:58,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 352 treesize of output 212 [2021-10-07 15:49:58,975 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 212 treesize of output 210 [2021-10-07 15:50:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:50:03,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:03,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185707239] [2021-10-07 15:50:03,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185707239] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:03,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:03,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:50:03,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834212559] [2021-10-07 15:50:03,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:50:03,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:03,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:50:03,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:50:03,944 INFO L87 Difference]: Start difference. First operand 697 states and 2230 transitions. Second operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:42,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:42,149 INFO L93 Difference]: Finished difference Result 1121 states and 3332 transitions. [2021-10-07 15:50:42,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:50:42,152 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 15:50:42,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:42,161 INFO L225 Difference]: With dead ends: 1121 [2021-10-07 15:50:42,161 INFO L226 Difference]: Without dead ends: 1121 [2021-10-07 15:50:42,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 28269.3ms TimeCoverageRelationStatistics Valid=270, Invalid=990, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:50:42,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2021-10-07 15:50:42,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 765. [2021-10-07 15:50:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 760 states have (on average 3.156578947368421) internal successors, (2399), 764 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 2399 transitions. [2021-10-07 15:50:42,191 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 2399 transitions. Word has length 15 [2021-10-07 15:50:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:42,191 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 2399 transitions. [2021-10-07 15:50:42,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 2399 transitions. [2021-10-07 15:50:42,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:50:42,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:42,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:42,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:42,408 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 [2021-10-07 15:50:42,409 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:50:42,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:42,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1453516676, now seen corresponding path program 1 times [2021-10-07 15:50:42,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:42,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132768359] [2021-10-07 15:50:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:50:42,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:42,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:42,413 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) [2021-10-07 15:50:42,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:50:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:42,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:50:42,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:43,216 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-07 15:50:43,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 218 treesize of output 108 [2021-10-07 15:50:43,223 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 108 treesize of output 104 [2021-10-07 15:50:43,229 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 104 treesize of output 100 [2021-10-07 15:50:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:50:43,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:45,742 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 298 treesize of output 294 [2021-10-07 15:50:45,751 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 294 treesize of output 290 [2021-10-07 15:50:47,173 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:50:47,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 105 treesize of output 83 [2021-10-07 15:50:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:50:52,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:52,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132768359] [2021-10-07 15:50:52,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132768359] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:52,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:52,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:50:52,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58158536] [2021-10-07 15:50:52,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:50:52,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:52,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:50:52,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:50:52,030 INFO L87 Difference]: Start difference. First operand 765 states and 2399 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:55,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:55,651 INFO L93 Difference]: Finished difference Result 1430 states and 4458 transitions. [2021-10-07 15:50:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:50:55,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:50:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:55,660 INFO L225 Difference]: With dead ends: 1430 [2021-10-07 15:50:55,661 INFO L226 Difference]: Without dead ends: 1416 [2021-10-07 15:50:55,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3288.3ms TimeCoverageRelationStatistics Valid=42, Invalid=113, Unknown=1, NotChecked=0, Total=156 [2021-10-07 15:50:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-10-07 15:50:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 772. [2021-10-07 15:50:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 767 states have (on average 3.1564537157757497) internal successors, (2421), 771 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2421 transitions. [2021-10-07 15:50:55,691 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2421 transitions. Word has length 16 [2021-10-07 15:50:55,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:55,692 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 2421 transitions. [2021-10-07 15:50:55,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2421 transitions. [2021-10-07 15:50:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:50:55,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:55,694 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:55,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:55,907 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 [2021-10-07 15:50:55,908 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:50:55,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:55,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1275040696, now seen corresponding path program 2 times [2021-10-07 15:50:55,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:55,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797792097] [2021-10-07 15:50:55,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:50:55,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:55,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:55,911 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) [2021-10-07 15:50:55,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:50:56,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:50:56,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:56,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:50:56,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:56,658 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 15:50:56,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 317 treesize of output 142 [2021-10-07 15:50:56,664 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 142 treesize of output 138 [2021-10-07 15:50:56,670 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 138 treesize of output 134 [2021-10-07 15:50:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:50:57,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:59,527 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 300 treesize of output 296 [2021-10-07 15:50:59,534 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 296 treesize of output 292 [2021-10-07 15:51:00,938 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:51:00,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 105 treesize of output 83 [2021-10-07 15:51:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:51:05,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:05,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797792097] [2021-10-07 15:51:05,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797792097] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:05,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:05,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:51:05,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963381539] [2021-10-07 15:51:05,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:51:05,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:05,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:51:05,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=93, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:51:05,948 INFO L87 Difference]: Start difference. First operand 772 states and 2421 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:11,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:11,282 INFO L93 Difference]: Finished difference Result 1246 states and 3919 transitions. [2021-10-07 15:51:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:51:11,284 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:51:11,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:11,292 INFO L225 Difference]: With dead ends: 1246 [2021-10-07 15:51:11,292 INFO L226 Difference]: Without dead ends: 1237 [2021-10-07 15:51:11,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3196.3ms TimeCoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2021-10-07 15:51:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2021-10-07 15:51:11,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 774. [2021-10-07 15:51:11,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 769 states have (on average 3.1573472041612485) internal successors, (2428), 773 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 2428 transitions. [2021-10-07 15:51:11,322 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 2428 transitions. Word has length 16 [2021-10-07 15:51:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:11,322 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 2428 transitions. [2021-10-07 15:51:11,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 2428 transitions. [2021-10-07 15:51:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:51:11,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:11,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:11,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:11,538 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 [2021-10-07 15:51:11,538 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:51:11,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:11,542 INFO L82 PathProgramCache]: Analyzing trace with hash -13728966, now seen corresponding path program 3 times [2021-10-07 15:51:11,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:11,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360502620] [2021-10-07 15:51:11,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:51:11,543 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:11,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:11,543 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) [2021-10-07 15:51:11,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:51:12,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:51:12,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:12,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:12,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:12,376 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 15:51:12,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 317 treesize of output 142 [2021-10-07 15:51:12,387 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 142 treesize of output 138 [2021-10-07 15:51:12,394 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 138 treesize of output 134 [2021-10-07 15:51:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:51:13,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:15,457 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 300 treesize of output 296 [2021-10-07 15:51:15,465 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 296 treesize of output 292 [2021-10-07 15:51:16,625 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:51:16,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 105 treesize of output 83 [2021-10-07 15:51:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:51:21,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:21,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360502620] [2021-10-07 15:51:21,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360502620] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:21,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:21,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:51:21,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598998629] [2021-10-07 15:51:21,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:51:21,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:21,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:51:21,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=95, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:51:21,437 INFO L87 Difference]: Start difference. First operand 774 states and 2428 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:27,159 INFO L93 Difference]: Finished difference Result 1094 states and 3421 transitions. [2021-10-07 15:51:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:51:27,161 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:51:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:27,168 INFO L225 Difference]: With dead ends: 1094 [2021-10-07 15:51:27,168 INFO L226 Difference]: Without dead ends: 1089 [2021-10-07 15:51:27,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3156.0ms TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2021-10-07 15:51:27,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2021-10-07 15:51:27,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 776. [2021-10-07 15:51:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 771 states have (on average 3.1556420233463034) internal successors, (2433), 775 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 2433 transitions. [2021-10-07 15:51:27,194 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 2433 transitions. Word has length 16 [2021-10-07 15:51:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:27,194 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 2433 transitions. [2021-10-07 15:51:27,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 2433 transitions. [2021-10-07 15:51:27,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:51:27,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:27,197 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:27,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:27,410 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 [2021-10-07 15:51:27,411 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:51:27,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:27,413 INFO L82 PathProgramCache]: Analyzing trace with hash 968445390, now seen corresponding path program 4 times [2021-10-07 15:51:27,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:27,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452351603] [2021-10-07 15:51:27,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:51:27,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:27,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:27,415 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) [2021-10-07 15:51:27,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:51:27,777 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:51:27,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:27,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:51:27,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:28,061 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 10 treesize of output 8 [2021-10-07 15:51:28,093 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 8 treesize of output 6 [2021-10-07 15:51:28,132 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 10 treesize of output 8 [2021-10-07 15:51:28,158 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 8 treesize of output 6 [2021-10-07 15:51:28,473 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 15:51:28,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 33 [2021-10-07 15:51:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:51:28,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:31,624 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:51:31,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 342 treesize of output 215 [2021-10-07 15:51:31,632 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 215 treesize of output 211 [2021-10-07 15:51:31,639 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 211 treesize of output 207 [2021-10-07 15:52:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:52:12,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:12,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452351603] [2021-10-07 15:52:12,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452351603] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:12,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:12,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:52:12,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960078824] [2021-10-07 15:52:12,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:52:12,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:12,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:52:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=95, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:52:12,630 INFO L87 Difference]: Start difference. First operand 776 states and 2433 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:18,423 INFO L93 Difference]: Finished difference Result 1209 states and 3802 transitions. [2021-10-07 15:52:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:52:18,426 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:52:18,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:18,436 INFO L225 Difference]: With dead ends: 1209 [2021-10-07 15:52:18,436 INFO L226 Difference]: Without dead ends: 1200 [2021-10-07 15:52:18,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3209.0ms TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2021-10-07 15:52:18,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2021-10-07 15:52:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 782. [2021-10-07 15:52:18,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 777 states have (on average 3.155727155727156) internal successors, (2452), 781 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 2452 transitions. [2021-10-07 15:52:18,462 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 2452 transitions. Word has length 16 [2021-10-07 15:52:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:18,462 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 2452 transitions. [2021-10-07 15:52:18,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 2452 transitions. [2021-10-07 15:52:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:52:18,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:18,465 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:18,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:18,679 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 [2021-10-07 15:52:18,679 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:52:18,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:18,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2034505456, now seen corresponding path program 5 times [2021-10-07 15:52:18,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:18,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332147175] [2021-10-07 15:52:18,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:52:18,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:18,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:18,683 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) [2021-10-07 15:52:18,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:52:19,165 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:52:19,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:19,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:52:19,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:19,484 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 10 treesize of output 8 [2021-10-07 15:52:19,506 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 8 treesize of output 6 [2021-10-07 15:52:19,538 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 10 treesize of output 8 [2021-10-07 15:52:19,552 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 8 treesize of output 6 [2021-10-07 15:52:19,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:52:19,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:52:19,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:52:19,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:52:19,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:52:19,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:52:19,772 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:52:19,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 21 [2021-10-07 15:52:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:52:20,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:22,742 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:52:22,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 342 treesize of output 215 [2021-10-07 15:52:22,750 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 215 treesize of output 211 [2021-10-07 15:52:22,757 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 211 treesize of output 207 [2021-10-07 15:52:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:52:32,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:32,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332147175] [2021-10-07 15:52:32,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332147175] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:32,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:32,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:52:32,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552193889] [2021-10-07 15:52:32,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:52:32,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:32,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:52:32,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=115, Unknown=1, NotChecked=0, Total=156 [2021-10-07 15:52:32,981 INFO L87 Difference]: Start difference. First operand 782 states and 2452 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:34,350 INFO L93 Difference]: Finished difference Result 1063 states and 3323 transitions. [2021-10-07 15:52:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:52:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:52:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:34,361 INFO L225 Difference]: With dead ends: 1063 [2021-10-07 15:52:34,361 INFO L226 Difference]: Without dead ends: 1058 [2021-10-07 15:52:34,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3153.4ms TimeCoverageRelationStatistics Valid=83, Invalid=222, Unknown=1, NotChecked=0, Total=306 [2021-10-07 15:52:34,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-10-07 15:52:34,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 786. [2021-10-07 15:52:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 781 states have (on average 3.1549295774647885) internal successors, (2464), 785 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 2464 transitions. [2021-10-07 15:52:34,395 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 2464 transitions. Word has length 16 [2021-10-07 15:52:34,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:34,398 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 2464 transitions. [2021-10-07 15:52:34,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 2464 transitions. [2021-10-07 15:52:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:52:34,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:34,401 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:34,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:34,615 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 [2021-10-07 15:52:34,615 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:52:34,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:34,616 INFO L82 PathProgramCache]: Analyzing trace with hash 548064594, now seen corresponding path program 6 times [2021-10-07 15:52:34,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:34,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985873036] [2021-10-07 15:52:34,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:52:34,617 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:34,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:34,619 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) [2021-10-07 15:52:34,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:52:35,122 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:52:35,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:35,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:52:35,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:35,425 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 10 treesize of output 8 [2021-10-07 15:52:35,454 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 8 treesize of output 6 [2021-10-07 15:52:35,494 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 10 treesize of output 8 [2021-10-07 15:52:35,517 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 8 treesize of output 6 [2021-10-07 15:52:35,918 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-07 15:52:35,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 24 [2021-10-07 15:52:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:52:36,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:38,893 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:52:38,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 342 treesize of output 215 [2021-10-07 15:52:38,900 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 215 treesize of output 211 [2021-10-07 15:52:38,907 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 211 treesize of output 207 [2021-10-07 15:53:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:53:24,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:24,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985873036] [2021-10-07 15:53:24,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985873036] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:53:24,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:53:24,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:53:24,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75767440] [2021-10-07 15:53:24,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:53:24,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:53:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:53:24,017 INFO L87 Difference]: Start difference. First operand 786 states and 2464 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:27,624 INFO L93 Difference]: Finished difference Result 1061 states and 3306 transitions. [2021-10-07 15:53:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:53:27,627 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:53:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:27,633 INFO L225 Difference]: With dead ends: 1061 [2021-10-07 15:53:27,634 INFO L226 Difference]: Without dead ends: 1056 [2021-10-07 15:53:27,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3115.5ms TimeCoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:53:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2021-10-07 15:53:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 790. [2021-10-07 15:53:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 785 states have (on average 3.1490445859872613) internal successors, (2472), 789 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2472 transitions. [2021-10-07 15:53:27,660 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2472 transitions. Word has length 16 [2021-10-07 15:53:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:27,661 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 2472 transitions. [2021-10-07 15:53:27,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2472 transitions. [2021-10-07 15:53:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:53:27,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:27,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:53:27,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:53:27,878 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 [2021-10-07 15:53:27,878 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:53:27,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:27,878 INFO L82 PathProgramCache]: Analyzing trace with hash -813353054, now seen corresponding path program 1 times [2021-10-07 15:53:27,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:27,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672618332] [2021-10-07 15:53:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:53:27,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:27,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:27,881 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) [2021-10-07 15:53:27,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:53:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:53:28,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:53:28,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:28,526 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 10 treesize of output 8 [2021-10-07 15:53:28,561 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 8 treesize of output 6 [2021-10-07 15:53:28,603 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 10 treesize of output 8 [2021-10-07 15:53:28,630 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 8 treesize of output 6 [2021-10-07 15:53:29,161 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-07 15:53:29,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 24 [2021-10-07 15:53:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:53:29,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:32,404 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:53:32,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 342 treesize of output 215 [2021-10-07 15:53:32,412 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 215 treesize of output 211 [2021-10-07 15:53:32,419 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 211 treesize of output 207 [2021-10-07 15:54:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:01,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:01,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672618332] [2021-10-07 15:54:01,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672618332] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:01,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:01,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:54:01,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340289639] [2021-10-07 15:54:01,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:54:01,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:54:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=140, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:54:01,277 INFO L87 Difference]: Start difference. First operand 790 states and 2472 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:04,697 INFO L93 Difference]: Finished difference Result 1061 states and 3306 transitions. [2021-10-07 15:54:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:54:04,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:54:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:04,706 INFO L225 Difference]: With dead ends: 1061 [2021-10-07 15:54:04,706 INFO L226 Difference]: Without dead ends: 1056 [2021-10-07 15:54:04,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3647.1ms TimeCoverageRelationStatistics Valid=41, Invalid=140, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:54:04,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2021-10-07 15:54:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 792. [2021-10-07 15:54:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 787 states have (on average 3.144853875476493) internal successors, (2475), 791 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 2475 transitions. [2021-10-07 15:54:04,729 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 2475 transitions. Word has length 16 [2021-10-07 15:54:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:04,729 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 2475 transitions. [2021-10-07 15:54:04,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 2475 transitions. [2021-10-07 15:54:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:54:04,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:04,731 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:04,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-07 15:54:04,944 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 [2021-10-07 15:54:04,945 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:54:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:04,946 INFO L82 PathProgramCache]: Analyzing trace with hash -505954998, now seen corresponding path program 2 times [2021-10-07 15:54:04,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:04,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994175515] [2021-10-07 15:54:04,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:54:04,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:04,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:04,948 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) [2021-10-07 15:54:04,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:54:05,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:54:05,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:05,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:54:05,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:05,649 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 10 treesize of output 8 [2021-10-07 15:54:05,680 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 8 treesize of output 6 [2021-10-07 15:54:05,724 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 10 treesize of output 8 [2021-10-07 15:54:05,752 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 8 treesize of output 6 [2021-10-07 15:54:06,179 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-07 15:54:06,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 24 [2021-10-07 15:54:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:06,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:09,473 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:54:09,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 342 treesize of output 215 [2021-10-07 15:54:09,481 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 215 treesize of output 211 [2021-10-07 15:54:09,487 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 211 treesize of output 207 [2021-10-07 15:54:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:45,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:45,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994175515] [2021-10-07 15:54:45,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994175515] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:45,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:45,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:54:45,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435828589] [2021-10-07 15:54:45,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:54:45,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:45,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:54:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:54:45,823 INFO L87 Difference]: Start difference. First operand 792 states and 2475 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:55,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:55,585 INFO L93 Difference]: Finished difference Result 1215 states and 3813 transitions. [2021-10-07 15:54:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:54:55,587 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:54:55,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:55,590 INFO L225 Difference]: With dead ends: 1215 [2021-10-07 15:54:55,590 INFO L226 Difference]: Without dead ends: 1206 [2021-10-07 15:54:55,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3501.0ms TimeCoverageRelationStatistics Valid=52, Invalid=157, Unknown=1, NotChecked=0, Total=210 [2021-10-07 15:54:55,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2021-10-07 15:54:55,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 790. [2021-10-07 15:54:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 785 states have (on average 3.1414012738853505) internal successors, (2466), 789 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2466 transitions. [2021-10-07 15:54:55,612 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2466 transitions. Word has length 16 [2021-10-07 15:54:55,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:55,613 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 2466 transitions. [2021-10-07 15:54:55,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:55,613 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2466 transitions. [2021-10-07 15:54:55,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:54:55,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:55,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:55,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:55,829 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 [2021-10-07 15:54:55,829 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:54:55,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:55,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1267998488, now seen corresponding path program 3 times [2021-10-07 15:54:55,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:55,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597061326] [2021-10-07 15:54:55,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:54:55,832 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:55,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:55,832 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) [2021-10-07 15:54:55,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:54:56,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:54:56,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:56,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:54:56,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:56,735 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-07 15:54:56,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 218 treesize of output 108 [2021-10-07 15:54:56,742 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 108 treesize of output 104 [2021-10-07 15:54:56,751 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 104 treesize of output 100 [2021-10-07 15:54:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:57,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:59,368 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 300 treesize of output 296 [2021-10-07 15:54:59,373 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 296 treesize of output 292 [2021-10-07 15:55:00,435 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:55:00,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 104 treesize of output 82 [2021-10-07 15:55:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:07,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:07,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597061326] [2021-10-07 15:55:07,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597061326] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:07,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:07,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:55:07,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985526549] [2021-10-07 15:55:07,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:55:07,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:07,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:55:07,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=132, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:55:07,675 INFO L87 Difference]: Start difference. First operand 790 states and 2466 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:13,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:13,126 INFO L93 Difference]: Finished difference Result 1263 states and 3967 transitions. [2021-10-07 15:55:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:55:13,128 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:55:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:13,132 INFO L225 Difference]: With dead ends: 1263 [2021-10-07 15:55:13,132 INFO L226 Difference]: Without dead ends: 1254 [2021-10-07 15:55:13,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3357.6ms TimeCoverageRelationStatistics Valid=58, Invalid=151, Unknown=1, NotChecked=0, Total=210 [2021-10-07 15:55:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-10-07 15:55:13,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 795. [2021-10-07 15:55:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 790 states have (on average 3.1468354430379746) internal successors, (2486), 794 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:13,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2486 transitions. [2021-10-07 15:55:13,156 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2486 transitions. Word has length 16 [2021-10-07 15:55:13,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:13,156 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 2486 transitions. [2021-10-07 15:55:13,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:13,156 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2486 transitions. [2021-10-07 15:55:13,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:55:13,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:13,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:55:13,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 15:55:13,372 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 [2021-10-07 15:55:13,372 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:55:13,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:13,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1734952358, now seen corresponding path program 4 times [2021-10-07 15:55:13,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:13,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134045616] [2021-10-07 15:55:13,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:55:13,374 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:13,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:13,376 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) [2021-10-07 15:55:13,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:55:13,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:55:13,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:13,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:55:13,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:14,250 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-07 15:55:14,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 218 treesize of output 108 [2021-10-07 15:55:14,256 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 108 treesize of output 104 [2021-10-07 15:55:14,260 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 104 treesize of output 100 [2021-10-07 15:55:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:14,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:16,739 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 300 treesize of output 296 [2021-10-07 15:55:16,746 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 296 treesize of output 292 [2021-10-07 15:55:18,081 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:55:18,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 104 treesize of output 82 [2021-10-07 15:55:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:25,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:25,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134045616] [2021-10-07 15:55:25,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134045616] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:25,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:25,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:55:25,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419185799] [2021-10-07 15:55:25,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:55:25,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:55:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:55:25,028 INFO L87 Difference]: Start difference. First operand 795 states and 2486 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:28,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:28,796 INFO L93 Difference]: Finished difference Result 1107 states and 3455 transitions. [2021-10-07 15:55:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:55:28,798 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:55:28,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:28,801 INFO L225 Difference]: With dead ends: 1107 [2021-10-07 15:55:28,802 INFO L226 Difference]: Without dead ends: 1102 [2021-10-07 15:55:28,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3502.4ms TimeCoverageRelationStatistics Valid=52, Invalid=157, Unknown=1, NotChecked=0, Total=210 [2021-10-07 15:55:28,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-10-07 15:55:28,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 793. [2021-10-07 15:55:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 788 states have (on average 3.1459390862944163) internal successors, (2479), 792 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 2479 transitions. [2021-10-07 15:55:28,821 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 2479 transitions. Word has length 16 [2021-10-07 15:55:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:28,821 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 2479 transitions. [2021-10-07 15:55:28,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:28,822 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 2479 transitions. [2021-10-07 15:55:28,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:55:28,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:28,823 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:55:28,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:55:29,023 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 [2021-10-07 15:55:29,024 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:55:29,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:29,024 INFO L82 PathProgramCache]: Analyzing trace with hash -439046944, now seen corresponding path program 5 times [2021-10-07 15:55:29,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:29,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869990384] [2021-10-07 15:55:29,025 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:55:29,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:29,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:29,027 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) [2021-10-07 15:55:29,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:55:29,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:55:29,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:29,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 15:55:29,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:30,155 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:55:30,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 174 treesize of output 94 [2021-10-07 15:55:30,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 90 [2021-10-07 15:55:30,166 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 90 treesize of output 86 [2021-10-07 15:55:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:30,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:32,587 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 298 treesize of output 294 [2021-10-07 15:55:32,592 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 294 treesize of output 290 [2021-10-07 15:55:33,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-07 15:55:33,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-07 15:55:33,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-07 15:55:33,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-07 15:55:33,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-07 15:55:33,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-07 15:55:33,913 INFO L354 Elim1Store]: treesize reduction 337, result has 12.7 percent of original size [2021-10-07 15:55:33,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 69 [2021-10-07 15:55:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:43,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:43,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869990384] [2021-10-07 15:55:43,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869990384] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:43,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:43,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 15:55:43,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913202477] [2021-10-07 15:55:43,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:55:43,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:43,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:55:43,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=162, Unknown=1, NotChecked=0, Total=210 [2021-10-07 15:55:43,990 INFO L87 Difference]: Start difference. First operand 793 states and 2479 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:45,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:45,962 INFO L93 Difference]: Finished difference Result 1427 states and 4447 transitions. [2021-10-07 15:55:45,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:55:45,963 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:55:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:45,967 INFO L225 Difference]: With dead ends: 1427 [2021-10-07 15:55:45,967 INFO L226 Difference]: Without dead ends: 1413 [2021-10-07 15:55:45,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4169.1ms TimeCoverageRelationStatistics Valid=97, Invalid=322, Unknown=1, NotChecked=0, Total=420 [2021-10-07 15:55:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2021-10-07 15:55:45,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 790. [2021-10-07 15:55:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 785 states have (on average 3.1414012738853505) internal successors, (2466), 789 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2466 transitions. [2021-10-07 15:55:45,993 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2466 transitions. Word has length 16 [2021-10-07 15:55:45,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:45,993 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 2466 transitions. [2021-10-07 15:55:45,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2466 transitions. [2021-10-07 15:55:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:55:45,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:45,995 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:55:46,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:55:46,209 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 [2021-10-07 15:55:46,210 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 34 more)] === [2021-10-07 15:55:46,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:46,211 INFO L82 PathProgramCache]: Analyzing trace with hash -674453834, now seen corresponding path program 7 times [2021-10-07 15:55:46,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:46,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756441247] [2021-10-07 15:55:46,211 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:55:46,212 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:46,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:46,213 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) [2021-10-07 15:55:46,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:55:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:55:46,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:55:46,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:46,787 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 71 treesize of output 69 [2021-10-07 15:55:47,608 INFO L354 Elim1Store]: treesize reduction 1262, result has 5.7 percent of original size [2021-10-07 15:55:47,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 81 treesize of output 101 [2021-10-07 15:55:54,353 INFO L354 Elim1Store]: treesize reduction 372, result has 0.3 percent of original size [2021-10-07 15:55:54,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 260 treesize of output 128 [2021-10-07 15:55:54,362 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 108 treesize of output 104 [2021-10-07 15:55:54,367 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 104 treesize of output 100 [2021-10-07 15:55:54,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:55:54,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:56,840 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 298 treesize of output 294 [2021-10-07 15:55:56,847 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 294 treesize of output 290 [2021-10-07 15:56:09,393 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 15:56:09,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1571749483 treesize of output 947846811 Received shutdown request... [2021-10-07 16:02:01,824 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:02:01,824 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 [2021-10-07 16:02:01,855 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:02:01,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 16:02:02,069 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 [2021-10-07 16:02:02,070 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2021-10-07 16:02:02,075 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:02:02,076 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:02:02,076 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:02:02,076 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:02:02,076 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-07 16:02:02,076 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-07 16:02:02,076 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:02:02,077 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:02:02,079 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:02:02,079 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:02:02,079 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-07 16:02:02,079 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-07 16:02:02,079 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:02:02,080 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:02:02,080 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:02:02,080 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:02:02,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:02:02,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:02:02,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:02:02,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:02:02,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 16:02:02,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 16:02:02,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:02:02,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:02:02,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:02:02,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:02:02,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:02:02,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:02:02,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:02:02,084 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-07 16:02:02,084 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-07 16:02:02,084 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:02:02,084 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:02:02,084 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:02:02,084 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:02:02,084 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-07 16:02:02,085 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-07 16:02:02,096 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:02:02,096 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:02:02,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:02:02 BasicIcfg [2021-10-07 16:02:02,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:02:02,100 INFO L168 Benchmark]: Toolchain (without parser) took 840159.83 ms. Allocated memory was 165.7 MB in the beginning and 687.9 MB in the end (delta: 522.2 MB). Free memory was 141.0 MB in the beginning and 497.7 MB in the end (delta: -356.7 MB). Peak memory consumption was 446.4 MB. Max. memory is 8.0 GB. [2021-10-07 16:02:02,101 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 165.7 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:02:02,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.22 ms. Allocated memory is still 165.7 MB. Free memory was 140.8 MB in the beginning and 127.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:02:02,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.19 ms. Allocated memory is still 165.7 MB. Free memory was 127.6 MB in the beginning and 125.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:02:02,102 INFO L168 Benchmark]: Boogie Preprocessor took 74.49 ms. Allocated memory is still 165.7 MB. Free memory was 125.8 MB in the beginning and 124.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:02:02,103 INFO L168 Benchmark]: RCFGBuilder took 915.21 ms. Allocated memory is still 165.7 MB. Free memory was 124.0 MB in the beginning and 142.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2021-10-07 16:02:02,103 INFO L168 Benchmark]: TraceAbstraction took 838620.09 ms. Allocated memory was 165.7 MB in the beginning and 687.9 MB in the end (delta: 522.2 MB). Free memory was 141.7 MB in the beginning and 497.7 MB in the end (delta: -355.9 MB). Peak memory consumption was 446.9 MB. Max. memory is 8.0 GB. [2021-10-07 16:02:02,107 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 165.7 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 435.22 ms. Allocated memory is still 165.7 MB. Free memory was 140.8 MB in the beginning and 127.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 90.19 ms. Allocated memory is still 165.7 MB. Free memory was 127.6 MB in the beginning and 125.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.49 ms. Allocated memory is still 165.7 MB. Free memory was 125.8 MB in the beginning and 124.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 915.21 ms. Allocated memory is still 165.7 MB. Free memory was 124.0 MB in the beginning and 142.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 838620.09 ms. Allocated memory was 165.7 MB in the beginning and 687.9 MB in the end (delta: 522.2 MB). Free memory was 141.7 MB in the beginning and 497.7 MB in the end (delta: -355.9 MB). Peak memory consumption was 446.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22997.7ms, 175 PlacesBefore, 47 PlacesAfterwards, 180 TransitionsBefore, 44 TransitionsAfterwards, 2700 CoEnabledTransitionPairs, 7 FixpointIterations, 101 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 10 ConcurrentYvCompositions, 8 ChoiceCompositions, 201 TotalNumberOfCompositions, 3752 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3299, positive: 3259, positive conditional: 0, positive unconditional: 3259, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1733, positive: 1722, positive conditional: 0, positive unconditional: 1722, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1733, positive: 1722, positive conditional: 0, positive unconditional: 1722, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 11, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 971, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 971, negative conditional: 0, negative unconditional: 971, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3299, positive: 1537, positive conditional: 0, positive unconditional: 1537, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 1733, unknown conditional: 0, unknown unconditional: 1733] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - 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: 102]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - 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 BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - 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 BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 221 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 838386.1ms, OverallIterations: 32, TraceHistogramMax: 6, EmptinessCheckTime: 68.7ms, AutomataDifference: 139037.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23083.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 506 SDtfs, 4973 SDslu, 2071 SDs, 0 SdLazy, 5331 SolverSat, 696 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 87440.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 679 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 94241.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=795occurred in iteration=29, InterpolantAutomatonStates: 253, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 605.1ms AutomataMinimizationTime, 31 MinimizatonAttempts, 8212 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 284.5ms SsaConstructionTime, 2687.9ms SatisfiabilityAnalysisTime, 285410.0ms InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 574 ConstructedInterpolants, 157 QuantifiedInterpolants, 18484 SizeOfPredicates, 653 NumberOfNonLiveVariables, 2337 ConjunctsInSsa, 361 ConjunctsInUnsatCore, 62 InterpolantComputations, 22 PerfectInterpolantSequences, 115/268 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